Lines Matching +full:path +full:- +full:map
1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2003-2006, Cluster File Systems, Inc, info@clusterfs.com
15 * - ext4*_error() should be used in some situations
16 * - analyze all BUG()/BUG_ON(), use -EIO where appropriate
17 * - smart tree reduction
53 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_extent_block_csum()
56 csum = ext4_chksum(sbi, ei->i_csum_seed, (__u8 *)eh, in ext4_extent_block_csum()
66 if (!ext4_has_metadata_csum(inode->i_sb)) in ext4_extent_block_csum_verify()
70 if (et->et_checksum != ext4_extent_block_csum(inode, eh)) in ext4_extent_block_csum_verify()
80 if (!ext4_has_metadata_csum(inode->i_sb)) in ext4_extent_block_csum_set()
84 et->et_checksum = ext4_extent_block_csum(inode, eh); in ext4_extent_block_csum_set()
104 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_trunc_restart_fn()
109 static void ext4_ext_drop_refs(struct ext4_ext_path *path) in ext4_ext_drop_refs() argument
113 if (!path) in ext4_ext_drop_refs()
115 depth = path->p_depth; in ext4_ext_drop_refs()
116 for (i = 0; i <= depth; i++, path++) { in ext4_ext_drop_refs()
117 brelse(path->p_bh); in ext4_ext_drop_refs()
118 path->p_bh = NULL; in ext4_ext_drop_refs()
122 void ext4_free_ext_path(struct ext4_ext_path *path) in ext4_free_ext_path() argument
124 ext4_ext_drop_refs(path); in ext4_free_ext_path()
125 kfree(path); in ext4_free_ext_path()
146 down_write(&EXT4_I(inode)->i_data_sem); in ext4_datasem_ensure_credits()
152 * - EROFS
153 * - ENOMEM
156 struct ext4_ext_path *path) in ext4_ext_get_access() argument
160 if (path->p_bh) { in ext4_ext_get_access()
161 /* path points to block */ in ext4_ext_get_access()
162 BUFFER_TRACE(path->p_bh, "get_write_access"); in ext4_ext_get_access()
163 err = ext4_journal_get_write_access(handle, inode->i_sb, in ext4_ext_get_access()
164 path->p_bh, EXT4_JTR_NONE); in ext4_ext_get_access()
172 clear_buffer_verified(path->p_bh); in ext4_ext_get_access()
174 /* path points to leaf/index in inode body */ in ext4_ext_get_access()
175 /* we use in-core data, no need to protect them */ in ext4_ext_get_access()
181 * - EROFS
182 * - ENOMEM
183 * - EIO
187 struct ext4_ext_path *path) in __ext4_ext_dirty() argument
191 WARN_ON(!rwsem_is_locked(&EXT4_I(inode)->i_data_sem)); in __ext4_ext_dirty()
192 if (path->p_bh) { in __ext4_ext_dirty()
193 ext4_extent_block_csum_set(inode, ext_block_hdr(path->p_bh)); in __ext4_ext_dirty()
194 /* path points to block */ in __ext4_ext_dirty()
196 inode, path->p_bh); in __ext4_ext_dirty()
197 /* Extents updating done, re-set verified flag */ in __ext4_ext_dirty()
199 set_buffer_verified(path->p_bh); in __ext4_ext_dirty()
201 /* path points to leaf/index in inode body */ in __ext4_ext_dirty()
207 #define ext4_ext_dirty(handle, inode, path) \ argument
208 __ext4_ext_dirty(__func__, __LINE__, (handle), (inode), (path))
211 struct ext4_ext_path *path, in ext4_ext_find_goal() argument
214 if (path) { in ext4_ext_find_goal()
215 int depth = path->p_depth; in ext4_ext_find_goal()
221 * non-sparse --- i.e., in the case of libbfd writing in ext4_ext_find_goal()
222 * an ELF object sections out-of-order but in a way in ext4_ext_find_goal()
226 * non-ideal if we are writing a sparse file such as in ext4_ext_find_goal()
235 ex = path[depth].p_ext; in ext4_ext_find_goal()
238 ext4_lblk_t ext_block = le32_to_cpu(ex->ee_block); in ext4_ext_find_goal()
241 return ext_pblk + (block - ext_block); in ext4_ext_find_goal()
243 return ext_pblk - (ext_block - block); in ext4_ext_find_goal()
248 if (path[depth].p_bh) in ext4_ext_find_goal()
249 return path[depth].p_bh->b_blocknr; in ext4_ext_find_goal()
261 struct ext4_ext_path *path, in ext4_ext_new_meta_block() argument
266 goal = ext4_ext_find_goal(inode, path, le32_to_cpu(ex->ee_block)); in ext4_ext_new_meta_block()
276 size = (inode->i_sb->s_blocksize - sizeof(struct ext4_extent_header)) in ext4_ext_space_block()
289 size = (inode->i_sb->s_blocksize - sizeof(struct ext4_extent_header)) in ext4_ext_space_block_idx()
302 size = sizeof(EXT4_I(inode)->i_data); in ext4_ext_space_root()
303 size -= sizeof(struct ext4_extent_header); in ext4_ext_space_root()
316 size = sizeof(EXT4_I(inode)->i_data); in ext4_ext_space_root_idx()
317 size -= sizeof(struct ext4_extent_header); in ext4_ext_space_root_idx()
331 struct ext4_ext_path *path = *ppath; in ext4_force_split_extent_at() local
332 int unwritten = ext4_ext_is_unwritten(path[path->p_depth].p_ext); in ext4_force_split_extent_at()
367 ext4_lblk_t lblock = le32_to_cpu(ext->ee_block); in ext4_valid_extent()
371 * - zero length in ext4_valid_extent()
372 * - overflow/wrap-around in ext4_valid_extent()
396 if (eh->eh_entries == 0) in ext4_valid_extent_entries()
399 entries = le16_to_cpu(eh->eh_entries); in ext4_valid_extent_entries()
410 lblk != le32_to_cpu(ext->ee_block)) in ext4_valid_extent_entries()
417 lblock = le32_to_cpu(ext->ee_block); in ext4_valid_extent_entries()
424 entries--; in ext4_valid_extent_entries()
434 lblk != le32_to_cpu(ext_idx->ei_block)) in ext4_valid_extent_entries()
441 lblock = le32_to_cpu(ext_idx->ei_block); in ext4_valid_extent_entries()
447 entries--; in ext4_valid_extent_entries()
459 int max = 0, err = -EFSCORRUPTED; in __ext4_ext_check()
461 if (unlikely(eh->eh_magic != EXT4_EXT_MAGIC)) { in __ext4_ext_check()
465 if (unlikely(le16_to_cpu(eh->eh_depth) != depth)) { in __ext4_ext_check()
469 if (unlikely(eh->eh_max == 0)) { in __ext4_ext_check()
474 if (unlikely(le16_to_cpu(eh->eh_max) > max)) { in __ext4_ext_check()
478 if (unlikely(le16_to_cpu(eh->eh_entries) > le16_to_cpu(eh->eh_max))) { in __ext4_ext_check()
482 if (unlikely((eh->eh_entries == 0) && (depth > 0))) { in __ext4_ext_check()
494 /* Verify checksum on non-root extent tree nodes */ in __ext4_ext_check()
498 err = -EFSBADCRC; in __ext4_ext_check()
504 ext4_error_inode_err(inode, function, line, 0, -err, in __ext4_ext_check()
505 "pblk %llu bad header/extent: %s - magic %x, " in __ext4_ext_check()
508 le16_to_cpu(eh->eh_magic), in __ext4_ext_check()
509 le16_to_cpu(eh->eh_entries), in __ext4_ext_check()
510 le16_to_cpu(eh->eh_max), in __ext4_ext_check()
511 max, le16_to_cpu(eh->eh_depth), depth); in __ext4_ext_check()
530 for (i = le16_to_cpu(eh->eh_entries); i > 0; i--, ex++) { in ext4_cache_extents()
532 ext4_lblk_t lblk = le32_to_cpu(ex->ee_block); in ext4_cache_extents()
536 ext4_es_cache_extent(inode, prev, lblk - prev, ~0, in ext4_cache_extents()
561 bh = sb_getblk_gfp(inode->i_sb, pblk, gfp_flags); in __read_extent_tree_block()
563 return ERR_PTR(-ENOMEM); in __read_extent_tree_block()
574 depth, pblk, le32_to_cpu(idx->ei_block)); in __read_extent_tree_block()
603 struct ext4_ext_path *path = NULL; in ext4_ext_precache() local
608 return 0; /* not an extent-mapped inode */ in ext4_ext_precache()
610 down_read(&ei->i_data_sem); in ext4_ext_precache()
615 up_read(&ei->i_data_sem); in ext4_ext_precache()
619 path = kcalloc(depth + 1, sizeof(struct ext4_ext_path), in ext4_ext_precache()
621 if (path == NULL) { in ext4_ext_precache()
622 up_read(&ei->i_data_sem); in ext4_ext_precache()
623 return -ENOMEM; in ext4_ext_precache()
626 path[0].p_hdr = ext_inode_hdr(inode); in ext4_ext_precache()
627 ret = ext4_ext_check(inode, path[0].p_hdr, depth, 0); in ext4_ext_precache()
630 path[0].p_idx = EXT_FIRST_INDEX(path[0].p_hdr); in ext4_ext_precache()
637 path[i].p_idx > EXT_LAST_INDEX(path[i].p_hdr)) { in ext4_ext_precache()
638 brelse(path[i].p_bh); in ext4_ext_precache()
639 path[i].p_bh = NULL; in ext4_ext_precache()
640 i--; in ext4_ext_precache()
643 bh = read_extent_tree_block(inode, path[i].p_idx++, in ext4_ext_precache()
644 depth - i - 1, in ext4_ext_precache()
651 path[i].p_bh = bh; in ext4_ext_precache()
652 path[i].p_hdr = ext_block_hdr(bh); in ext4_ext_precache()
653 path[i].p_idx = EXT_FIRST_INDEX(path[i].p_hdr); in ext4_ext_precache()
657 up_read(&ei->i_data_sem); in ext4_ext_precache()
658 ext4_free_ext_path(path); in ext4_ext_precache()
663 static void ext4_ext_show_path(struct inode *inode, struct ext4_ext_path *path) in ext4_ext_show_path() argument
665 int k, l = path->p_depth; in ext4_ext_show_path()
667 ext_debug(inode, "path:"); in ext4_ext_show_path()
668 for (k = 0; k <= l; k++, path++) { in ext4_ext_show_path()
669 if (path->p_idx) { in ext4_ext_show_path()
670 ext_debug(inode, " %d->%llu", in ext4_ext_show_path()
671 le32_to_cpu(path->p_idx->ei_block), in ext4_ext_show_path()
672 ext4_idx_pblock(path->p_idx)); in ext4_ext_show_path()
673 } else if (path->p_ext) { in ext4_ext_show_path()
675 le32_to_cpu(path->p_ext->ee_block), in ext4_ext_show_path()
676 ext4_ext_is_unwritten(path->p_ext), in ext4_ext_show_path()
677 ext4_ext_get_actual_len(path->p_ext), in ext4_ext_show_path()
678 ext4_ext_pblock(path->p_ext)); in ext4_ext_show_path()
685 static void ext4_ext_show_leaf(struct inode *inode, struct ext4_ext_path *path) in ext4_ext_show_leaf() argument
692 if (!path) in ext4_ext_show_leaf()
695 eh = path[depth].p_hdr; in ext4_ext_show_leaf()
700 for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ex++) { in ext4_ext_show_leaf()
701 ext_debug(inode, "%d:[%d]%d:%llu ", le32_to_cpu(ex->ee_block), in ext4_ext_show_leaf()
708 static void ext4_ext_show_move(struct inode *inode, struct ext4_ext_path *path, in ext4_ext_show_move() argument
716 idx = path[level].p_idx; in ext4_ext_show_move()
717 while (idx <= EXT_MAX_INDEX(path[level].p_hdr)) { in ext4_ext_show_move()
719 level, le32_to_cpu(idx->ei_block), in ext4_ext_show_move()
727 ex = path[depth].p_ext; in ext4_ext_show_move()
728 while (ex <= EXT_MAX_EXTENT(path[depth].p_hdr)) { in ext4_ext_show_move()
730 le32_to_cpu(ex->ee_block), in ext4_ext_show_move()
740 #define ext4_ext_show_path(inode, path) argument
741 #define ext4_ext_show_leaf(inode, path) argument
742 #define ext4_ext_show_move(inode, path, newblock, level) argument
752 struct ext4_ext_path *path, ext4_lblk_t block) in ext4_ext_binsearch_idx() argument
754 struct ext4_extent_header *eh = path->p_hdr; in ext4_ext_binsearch_idx()
763 m = l + (r - l) / 2; in ext4_ext_binsearch_idx()
765 le32_to_cpu(l->ei_block), m, le32_to_cpu(m->ei_block), in ext4_ext_binsearch_idx()
766 r, le32_to_cpu(r->ei_block)); in ext4_ext_binsearch_idx()
768 if (block < le32_to_cpu(m->ei_block)) in ext4_ext_binsearch_idx()
769 r = m - 1; in ext4_ext_binsearch_idx()
774 path->p_idx = l - 1; in ext4_ext_binsearch_idx()
775 ext_debug(inode, " -> %u->%lld ", le32_to_cpu(path->p_idx->ei_block), in ext4_ext_binsearch_idx()
776 ext4_idx_pblock(path->p_idx)); in ext4_ext_binsearch_idx()
784 for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ix++) { in ext4_ext_binsearch_idx()
785 if (k != 0 && le32_to_cpu(ix->ei_block) <= in ext4_ext_binsearch_idx()
786 le32_to_cpu(ix[-1].ei_block)) { in ext4_ext_binsearch_idx()
791 le32_to_cpu(ix->ei_block), in ext4_ext_binsearch_idx()
792 le32_to_cpu(ix[-1].ei_block)); in ext4_ext_binsearch_idx()
794 BUG_ON(k && le32_to_cpu(ix->ei_block) in ext4_ext_binsearch_idx()
795 <= le32_to_cpu(ix[-1].ei_block)); in ext4_ext_binsearch_idx()
796 if (block < le32_to_cpu(ix->ei_block)) in ext4_ext_binsearch_idx()
800 BUG_ON(chix != path->p_idx); in ext4_ext_binsearch_idx()
813 struct ext4_ext_path *path, ext4_lblk_t block) in ext4_ext_binsearch() argument
815 struct ext4_extent_header *eh = path->p_hdr; in ext4_ext_binsearch()
818 if (eh->eh_entries == 0) { in ext4_ext_binsearch()
832 m = l + (r - l) / 2; in ext4_ext_binsearch()
834 le32_to_cpu(l->ee_block), m, le32_to_cpu(m->ee_block), in ext4_ext_binsearch()
835 r, le32_to_cpu(r->ee_block)); in ext4_ext_binsearch()
837 if (block < le32_to_cpu(m->ee_block)) in ext4_ext_binsearch()
838 r = m - 1; in ext4_ext_binsearch()
843 path->p_ext = l - 1; in ext4_ext_binsearch()
844 ext_debug(inode, " -> %d:%llu:[%d]%d ", in ext4_ext_binsearch()
845 le32_to_cpu(path->p_ext->ee_block), in ext4_ext_binsearch()
846 ext4_ext_pblock(path->p_ext), in ext4_ext_binsearch()
847 ext4_ext_is_unwritten(path->p_ext), in ext4_ext_binsearch()
848 ext4_ext_get_actual_len(path->p_ext)); in ext4_ext_binsearch()
856 for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ex++) { in ext4_ext_binsearch()
857 BUG_ON(k && le32_to_cpu(ex->ee_block) in ext4_ext_binsearch()
858 <= le32_to_cpu(ex[-1].ee_block)); in ext4_ext_binsearch()
859 if (block < le32_to_cpu(ex->ee_block)) in ext4_ext_binsearch()
863 BUG_ON(chex != path->p_ext); in ext4_ext_binsearch()
874 eh->eh_depth = 0; in ext4_ext_tree_init()
875 eh->eh_entries = 0; in ext4_ext_tree_init()
876 eh->eh_magic = EXT4_EXT_MAGIC; in ext4_ext_tree_init()
877 eh->eh_max = cpu_to_le16(ext4_ext_space_root(inode, 0)); in ext4_ext_tree_init()
878 eh->eh_generation = 0; in ext4_ext_tree_init()
888 struct ext4_ext_path *path = orig_path ? *orig_path : NULL; in ext4_find_extent() local
901 ret = -EFSCORRUPTED; in ext4_find_extent()
905 if (path) { in ext4_find_extent()
906 ext4_ext_drop_refs(path); in ext4_find_extent()
907 if (depth > path[0].p_maxdepth) { in ext4_find_extent()
908 kfree(path); in ext4_find_extent()
909 *orig_path = path = NULL; in ext4_find_extent()
912 if (!path) { in ext4_find_extent()
914 path = kcalloc(depth + 2, sizeof(struct ext4_ext_path), in ext4_find_extent()
916 if (unlikely(!path)) in ext4_find_extent()
917 return ERR_PTR(-ENOMEM); in ext4_find_extent()
918 path[0].p_maxdepth = depth + 1; in ext4_find_extent()
920 path[0].p_hdr = eh; in ext4_find_extent()
921 path[0].p_bh = NULL; in ext4_find_extent()
929 ppos, le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max)); in ext4_find_extent()
931 ext4_ext_binsearch_idx(inode, path + ppos, block); in ext4_find_extent()
932 path[ppos].p_block = ext4_idx_pblock(path[ppos].p_idx); in ext4_find_extent()
933 path[ppos].p_depth = i; in ext4_find_extent()
934 path[ppos].p_ext = NULL; in ext4_find_extent()
936 bh = read_extent_tree_block(inode, path[ppos].p_idx, --i, flags); in ext4_find_extent()
944 path[ppos].p_bh = bh; in ext4_find_extent()
945 path[ppos].p_hdr = eh; in ext4_find_extent()
948 path[ppos].p_depth = i; in ext4_find_extent()
949 path[ppos].p_ext = NULL; in ext4_find_extent()
950 path[ppos].p_idx = NULL; in ext4_find_extent()
953 ext4_ext_binsearch(inode, path + ppos, block); in ext4_find_extent()
955 if (path[ppos].p_ext) in ext4_find_extent()
956 path[ppos].p_block = ext4_ext_pblock(path[ppos].p_ext); in ext4_find_extent()
958 ext4_ext_show_path(inode, path); in ext4_find_extent()
961 *orig_path = path; in ext4_find_extent()
962 return path; in ext4_find_extent()
965 ext4_free_ext_path(path); in ext4_find_extent()
987 if (unlikely(logical == le32_to_cpu(curp->p_idx->ei_block))) { in ext4_ext_insert_index()
990 logical, le32_to_cpu(curp->p_idx->ei_block)); in ext4_ext_insert_index()
991 return -EFSCORRUPTED; in ext4_ext_insert_index()
994 if (unlikely(le16_to_cpu(curp->p_hdr->eh_entries) in ext4_ext_insert_index()
995 >= le16_to_cpu(curp->p_hdr->eh_max))) { in ext4_ext_insert_index()
998 le16_to_cpu(curp->p_hdr->eh_entries), in ext4_ext_insert_index()
999 le16_to_cpu(curp->p_hdr->eh_max)); in ext4_ext_insert_index()
1000 return -EFSCORRUPTED; in ext4_ext_insert_index()
1003 if (logical > le32_to_cpu(curp->p_idx->ei_block)) { in ext4_ext_insert_index()
1007 ix = curp->p_idx + 1; in ext4_ext_insert_index()
1012 ix = curp->p_idx; in ext4_ext_insert_index()
1015 if (unlikely(ix > EXT_MAX_INDEX(curp->p_hdr))) { in ext4_ext_insert_index()
1017 return -EFSCORRUPTED; in ext4_ext_insert_index()
1020 len = EXT_LAST_INDEX(curp->p_hdr) - ix + 1; in ext4_ext_insert_index()
1029 ix->ei_block = cpu_to_le32(logical); in ext4_ext_insert_index()
1031 le16_add_cpu(&curp->p_hdr->eh_entries, 1); in ext4_ext_insert_index()
1033 if (unlikely(ix > EXT_LAST_INDEX(curp->p_hdr))) { in ext4_ext_insert_index()
1035 return -EFSCORRUPTED; in ext4_ext_insert_index()
1039 ext4_std_error(inode->i_sb, err); in ext4_ext_insert_index()
1046 * inserts new subtree into the path, using free index entry
1048 * - allocates all needed blocks (new leaf and all intermediate index blocks)
1049 * - makes decision where to split
1050 * - moves remaining extents and index entries (right to the split point)
1052 * - initializes subtree
1056 struct ext4_ext_path *path, in ext4_ext_split() argument
1079 if (unlikely(path[depth].p_ext > EXT_MAX_EXTENT(path[depth].p_hdr))) { in ext4_ext_split()
1081 return -EFSCORRUPTED; in ext4_ext_split()
1083 if (path[depth].p_ext != EXT_MAX_EXTENT(path[depth].p_hdr)) { in ext4_ext_split()
1084 border = path[depth].p_ext[1].ee_block; in ext4_ext_split()
1089 border = newext->ee_block; in ext4_ext_split()
1097 * and mark filesystem read-only. index won't in ext4_ext_split()
1109 return -ENOMEM; in ext4_ext_split()
1112 ext_debug(inode, "allocate %d blocks for indexes/leaf\n", depth - at); in ext4_ext_split()
1113 for (a = 0; a < depth - at; a++) { in ext4_ext_split()
1114 newblock = ext4_ext_new_meta_block(handle, inode, path, in ext4_ext_split()
1122 newblock = ablocks[--a]; in ext4_ext_split()
1125 err = -EFSCORRUPTED; in ext4_ext_split()
1128 bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS); in ext4_ext_split()
1130 err = -ENOMEM; in ext4_ext_split()
1135 err = ext4_journal_get_create_access(handle, inode->i_sb, bh, in ext4_ext_split()
1141 neh->eh_entries = 0; in ext4_ext_split()
1142 neh->eh_max = cpu_to_le16(ext4_ext_space_block(inode, 0)); in ext4_ext_split()
1143 neh->eh_magic = EXT4_EXT_MAGIC; in ext4_ext_split()
1144 neh->eh_depth = 0; in ext4_ext_split()
1145 neh->eh_generation = 0; in ext4_ext_split()
1147 /* move remainder of path[depth] to the new leaf */ in ext4_ext_split()
1148 if (unlikely(path[depth].p_hdr->eh_entries != in ext4_ext_split()
1149 path[depth].p_hdr->eh_max)) { in ext4_ext_split()
1151 path[depth].p_hdr->eh_entries, in ext4_ext_split()
1152 path[depth].p_hdr->eh_max); in ext4_ext_split()
1153 err = -EFSCORRUPTED; in ext4_ext_split()
1157 m = EXT_MAX_EXTENT(path[depth].p_hdr) - path[depth].p_ext++; in ext4_ext_split()
1158 ext4_ext_show_move(inode, path, newblock, depth); in ext4_ext_split()
1162 memmove(ex, path[depth].p_ext, sizeof(struct ext4_extent) * m); in ext4_ext_split()
1163 le16_add_cpu(&neh->eh_entries, m); in ext4_ext_split()
1168 sizeof(struct ext4_extent) * le16_to_cpu(neh->eh_entries); in ext4_ext_split()
1169 memset(bh->b_data + ext_size, 0, inode->i_sb->s_blocksize - ext_size); in ext4_ext_split()
1182 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_split()
1185 le16_add_cpu(&path[depth].p_hdr->eh_entries, -m); in ext4_ext_split()
1186 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_split()
1193 k = depth - at - 1; in ext4_ext_split()
1196 err = -EFSCORRUPTED; in ext4_ext_split()
1203 i = depth - 1; in ext4_ext_split()
1204 while (k--) { in ext4_ext_split()
1206 newblock = ablocks[--a]; in ext4_ext_split()
1207 bh = sb_getblk(inode->i_sb, newblock); in ext4_ext_split()
1209 err = -ENOMEM; in ext4_ext_split()
1214 err = ext4_journal_get_create_access(handle, inode->i_sb, bh, in ext4_ext_split()
1220 neh->eh_entries = cpu_to_le16(1); in ext4_ext_split()
1221 neh->eh_magic = EXT4_EXT_MAGIC; in ext4_ext_split()
1222 neh->eh_max = cpu_to_le16(ext4_ext_space_block_idx(inode, 0)); in ext4_ext_split()
1223 neh->eh_depth = cpu_to_le16(depth - i); in ext4_ext_split()
1224 neh->eh_generation = 0; in ext4_ext_split()
1226 fidx->ei_block = border; in ext4_ext_split()
1229 ext_debug(inode, "int.index at %d (block %llu): %u -> %llu\n", in ext4_ext_split()
1232 /* move remainder of path[i] to the new index block */ in ext4_ext_split()
1233 if (unlikely(EXT_MAX_INDEX(path[i].p_hdr) != in ext4_ext_split()
1234 EXT_LAST_INDEX(path[i].p_hdr))) { in ext4_ext_split()
1237 le32_to_cpu(path[i].p_ext->ee_block)); in ext4_ext_split()
1238 err = -EFSCORRUPTED; in ext4_ext_split()
1242 m = EXT_MAX_INDEX(path[i].p_hdr) - path[i].p_idx++; in ext4_ext_split()
1243 ext_debug(inode, "cur 0x%p, last 0x%p\n", path[i].p_idx, in ext4_ext_split()
1244 EXT_MAX_INDEX(path[i].p_hdr)); in ext4_ext_split()
1245 ext4_ext_show_move(inode, path, newblock, i); in ext4_ext_split()
1247 memmove(++fidx, path[i].p_idx, in ext4_ext_split()
1249 le16_add_cpu(&neh->eh_entries, m); in ext4_ext_split()
1253 (sizeof(struct ext4_extent) * le16_to_cpu(neh->eh_entries)); in ext4_ext_split()
1254 memset(bh->b_data + ext_size, 0, in ext4_ext_split()
1255 inode->i_sb->s_blocksize - ext_size); in ext4_ext_split()
1268 err = ext4_ext_get_access(handle, inode, path + i); in ext4_ext_split()
1271 le16_add_cpu(&path[i].p_hdr->eh_entries, -m); in ext4_ext_split()
1272 err = ext4_ext_dirty(handle, inode, path + i); in ext4_ext_split()
1277 i--; in ext4_ext_split()
1281 err = ext4_ext_insert_index(handle, inode, path + at, in ext4_ext_split()
1308 * - allocates new block
1309 * - moves top-level data (index block or leaf) into the new block
1310 * - initializes new top-level, creating index that points to the
1319 struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es; in ext4_ext_grow_indepth()
1326 if (goal > le32_to_cpu(es->s_first_data_block)) { in ext4_ext_grow_indepth()
1328 goal--; in ext4_ext_grow_indepth()
1336 bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS); in ext4_ext_grow_indepth()
1338 return -ENOMEM; in ext4_ext_grow_indepth()
1341 err = ext4_journal_get_create_access(handle, inode->i_sb, bh, in ext4_ext_grow_indepth()
1348 ext_size = sizeof(EXT4_I(inode)->i_data); in ext4_ext_grow_indepth()
1349 /* move top-level index/leaf into new block */ in ext4_ext_grow_indepth()
1350 memmove(bh->b_data, EXT4_I(inode)->i_data, ext_size); in ext4_ext_grow_indepth()
1352 memset(bh->b_data + ext_size, 0, inode->i_sb->s_blocksize - ext_size); in ext4_ext_grow_indepth()
1359 neh->eh_max = cpu_to_le16(ext4_ext_space_block_idx(inode, 0)); in ext4_ext_grow_indepth()
1361 neh->eh_max = cpu_to_le16(ext4_ext_space_block(inode, 0)); in ext4_ext_grow_indepth()
1362 neh->eh_magic = EXT4_EXT_MAGIC; in ext4_ext_grow_indepth()
1372 /* Update top-level index: num,max,pointer */ in ext4_ext_grow_indepth()
1374 neh->eh_entries = cpu_to_le16(1); in ext4_ext_grow_indepth()
1376 if (neh->eh_depth == 0) { in ext4_ext_grow_indepth()
1378 neh->eh_max = cpu_to_le16(ext4_ext_space_root_idx(inode, 0)); in ext4_ext_grow_indepth()
1379 EXT_FIRST_INDEX(neh)->ei_block = in ext4_ext_grow_indepth()
1380 EXT_FIRST_EXTENT(neh)->ee_block; in ext4_ext_grow_indepth()
1383 le16_to_cpu(neh->eh_entries), le16_to_cpu(neh->eh_max), in ext4_ext_grow_indepth()
1384 le32_to_cpu(EXT_FIRST_INDEX(neh)->ei_block), in ext4_ext_grow_indepth()
1387 le16_add_cpu(&neh->eh_depth, 1); in ext4_ext_grow_indepth()
1398 * if no free index is found, then it requests in-depth growing.
1406 struct ext4_ext_path *path = *ppath; in ext4_ext_create_new_leaf() local
1414 curp = path + depth; in ext4_ext_create_new_leaf()
1416 i--; in ext4_ext_create_new_leaf()
1417 curp--; in ext4_ext_create_new_leaf()
1425 err = ext4_ext_split(handle, inode, mb_flags, path, newext, i); in ext4_ext_create_new_leaf()
1429 /* refill path */ in ext4_ext_create_new_leaf()
1430 path = ext4_find_extent(inode, in ext4_ext_create_new_leaf()
1431 (ext4_lblk_t)le32_to_cpu(newext->ee_block), in ext4_ext_create_new_leaf()
1433 if (IS_ERR(path)) in ext4_ext_create_new_leaf()
1434 err = PTR_ERR(path); in ext4_ext_create_new_leaf()
1441 /* refill path */ in ext4_ext_create_new_leaf()
1442 path = ext4_find_extent(inode, in ext4_ext_create_new_leaf()
1443 (ext4_lblk_t)le32_to_cpu(newext->ee_block), in ext4_ext_create_new_leaf()
1445 if (IS_ERR(path)) { in ext4_ext_create_new_leaf()
1446 err = PTR_ERR(path); in ext4_ext_create_new_leaf()
1451 * only first (depth 0 -> 1) produces free space; in ext4_ext_create_new_leaf()
1455 if (path[depth].p_hdr->eh_entries == path[depth].p_hdr->eh_max) { in ext4_ext_create_new_leaf()
1473 struct ext4_ext_path *path, in ext4_ext_search_left() argument
1480 if (unlikely(path == NULL)) { in ext4_ext_search_left()
1481 EXT4_ERROR_INODE(inode, "path == NULL *logical %d!", *logical); in ext4_ext_search_left()
1482 return -EFSCORRUPTED; in ext4_ext_search_left()
1484 depth = path->p_depth; in ext4_ext_search_left()
1487 if (depth == 0 && path->p_ext == NULL) in ext4_ext_search_left()
1490 /* usually extent in the path covers blocks smaller in ext4_ext_search_left()
1494 ex = path[depth].p_ext; in ext4_ext_search_left()
1496 if (*logical < le32_to_cpu(ex->ee_block)) { in ext4_ext_search_left()
1497 if (unlikely(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex)) { in ext4_ext_search_left()
1500 *logical, le32_to_cpu(ex->ee_block)); in ext4_ext_search_left()
1501 return -EFSCORRUPTED; in ext4_ext_search_left()
1503 while (--depth >= 0) { in ext4_ext_search_left()
1504 ix = path[depth].p_idx; in ext4_ext_search_left()
1505 if (unlikely(ix != EXT_FIRST_INDEX(path[depth].p_hdr))) { in ext4_ext_search_left()
1508 ix != NULL ? le32_to_cpu(ix->ei_block) : 0, in ext4_ext_search_left()
1509 le32_to_cpu(EXT_FIRST_INDEX(path[depth].p_hdr)->ei_block), in ext4_ext_search_left()
1511 return -EFSCORRUPTED; in ext4_ext_search_left()
1517 if (unlikely(*logical < (le32_to_cpu(ex->ee_block) + ee_len))) { in ext4_ext_search_left()
1520 *logical, le32_to_cpu(ex->ee_block), ee_len); in ext4_ext_search_left()
1521 return -EFSCORRUPTED; in ext4_ext_search_left()
1524 *logical = le32_to_cpu(ex->ee_block) + ee_len - 1; in ext4_ext_search_left()
1525 *phys = ext4_ext_pblock(ex) + ee_len - 1; in ext4_ext_search_left()
1537 struct ext4_ext_path *path, in ext4_ext_search_right() argument
1548 if (unlikely(path == NULL)) { in ext4_ext_search_right()
1549 EXT4_ERROR_INODE(inode, "path == NULL *logical %d!", *logical); in ext4_ext_search_right()
1550 return -EFSCORRUPTED; in ext4_ext_search_right()
1552 depth = path->p_depth; in ext4_ext_search_right()
1555 if (depth == 0 && path->p_ext == NULL) in ext4_ext_search_right()
1558 /* usually extent in the path covers blocks smaller in ext4_ext_search_right()
1562 ex = path[depth].p_ext; in ext4_ext_search_right()
1564 if (*logical < le32_to_cpu(ex->ee_block)) { in ext4_ext_search_right()
1565 if (unlikely(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex)) { in ext4_ext_search_right()
1567 "first_extent(path[%d].p_hdr) != ex", in ext4_ext_search_right()
1569 return -EFSCORRUPTED; in ext4_ext_search_right()
1571 while (--depth >= 0) { in ext4_ext_search_right()
1572 ix = path[depth].p_idx; in ext4_ext_search_right()
1573 if (unlikely(ix != EXT_FIRST_INDEX(path[depth].p_hdr))) { in ext4_ext_search_right()
1577 return -EFSCORRUPTED; in ext4_ext_search_right()
1583 if (unlikely(*logical < (le32_to_cpu(ex->ee_block) + ee_len))) { in ext4_ext_search_right()
1586 *logical, le32_to_cpu(ex->ee_block), ee_len); in ext4_ext_search_right()
1587 return -EFSCORRUPTED; in ext4_ext_search_right()
1590 if (ex != EXT_LAST_EXTENT(path[depth].p_hdr)) { in ext4_ext_search_right()
1597 while (--depth >= 0) { in ext4_ext_search_right()
1598 ix = path[depth].p_idx; in ext4_ext_search_right()
1599 if (ix != EXT_LAST_INDEX(path[depth].p_hdr)) in ext4_ext_search_right()
1611 while (++depth < path->p_depth) { in ext4_ext_search_right()
1613 bh = read_extent_tree_block(inode, ix, path->p_depth - depth, 0); in ext4_ext_search_right()
1621 bh = read_extent_tree_block(inode, ix, path->p_depth - depth, 0); in ext4_ext_search_right()
1627 *logical = le32_to_cpu(ex->ee_block); in ext4_ext_search_right()
1644 ext4_ext_next_allocated_block(struct ext4_ext_path *path) in ext4_ext_next_allocated_block() argument
1648 BUG_ON(path == NULL); in ext4_ext_next_allocated_block()
1649 depth = path->p_depth; in ext4_ext_next_allocated_block()
1651 if (depth == 0 && path->p_ext == NULL) in ext4_ext_next_allocated_block()
1655 struct ext4_ext_path *p = &path[depth]; in ext4_ext_next_allocated_block()
1657 if (depth == path->p_depth) { in ext4_ext_next_allocated_block()
1659 if (p->p_ext && p->p_ext != EXT_LAST_EXTENT(p->p_hdr)) in ext4_ext_next_allocated_block()
1660 return le32_to_cpu(p->p_ext[1].ee_block); in ext4_ext_next_allocated_block()
1663 if (p->p_idx != EXT_LAST_INDEX(p->p_hdr)) in ext4_ext_next_allocated_block()
1664 return le32_to_cpu(p->p_idx[1].ei_block); in ext4_ext_next_allocated_block()
1666 depth--; in ext4_ext_next_allocated_block()
1676 static ext4_lblk_t ext4_ext_next_leaf_block(struct ext4_ext_path *path) in ext4_ext_next_leaf_block() argument
1680 BUG_ON(path == NULL); in ext4_ext_next_leaf_block()
1681 depth = path->p_depth; in ext4_ext_next_leaf_block()
1683 /* zero-tree has no leaf blocks at all */ in ext4_ext_next_leaf_block()
1688 depth--; in ext4_ext_next_leaf_block()
1691 if (path[depth].p_idx != in ext4_ext_next_leaf_block()
1692 EXT_LAST_INDEX(path[depth].p_hdr)) in ext4_ext_next_leaf_block()
1694 le32_to_cpu(path[depth].p_idx[1].ei_block); in ext4_ext_next_leaf_block()
1695 depth--; in ext4_ext_next_leaf_block()
1708 struct ext4_ext_path *path) in ext4_ext_correct_indexes() argument
1716 eh = path[depth].p_hdr; in ext4_ext_correct_indexes()
1717 ex = path[depth].p_ext; in ext4_ext_correct_indexes()
1722 return -EFSCORRUPTED; in ext4_ext_correct_indexes()
1738 k = depth - 1; in ext4_ext_correct_indexes()
1739 border = path[depth].p_ext->ee_block; in ext4_ext_correct_indexes()
1740 err = ext4_ext_get_access(handle, inode, path + k); in ext4_ext_correct_indexes()
1743 path[k].p_idx->ei_block = border; in ext4_ext_correct_indexes()
1744 err = ext4_ext_dirty(handle, inode, path + k); in ext4_ext_correct_indexes()
1748 while (k--) { in ext4_ext_correct_indexes()
1749 /* change all left-side indexes */ in ext4_ext_correct_indexes()
1750 if (path[k+1].p_idx != EXT_FIRST_INDEX(path[k+1].p_hdr)) in ext4_ext_correct_indexes()
1752 err = ext4_ext_get_access(handle, inode, path + k); in ext4_ext_correct_indexes()
1755 path[k].p_idx->ei_block = border; in ext4_ext_correct_indexes()
1756 err = ext4_ext_dirty(handle, inode, path + k); in ext4_ext_correct_indexes()
1776 if (le32_to_cpu(ex1->ee_block) + ext1_ee_len != in ext4_can_extents_be_merged()
1777 le32_to_cpu(ex2->ee_block)) in ext4_can_extents_be_merged()
1799 * left, pass "ex - 1" as argument instead of "ex".
1804 struct ext4_ext_path *path, in ext4_ext_try_to_merge_right() argument
1812 BUG_ON(path[depth].p_hdr == NULL); in ext4_ext_try_to_merge_right()
1813 eh = path[depth].p_hdr; in ext4_ext_try_to_merge_right()
1820 ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) in ext4_ext_try_to_merge_right()
1826 len = (EXT_LAST_EXTENT(eh) - ex - 1) in ext4_ext_try_to_merge_right()
1830 le16_add_cpu(&eh->eh_entries, -1); in ext4_ext_try_to_merge_right()
1832 WARN_ON(eh->eh_entries == 0); in ext4_ext_try_to_merge_right()
1833 if (!eh->eh_entries) in ext4_ext_try_to_merge_right()
1834 EXT4_ERROR_INODE(inode, "eh->eh_entries = 0!"); in ext4_ext_try_to_merge_right()
1846 struct ext4_ext_path *path) in ext4_ext_try_to_merge_up() argument
1852 if ((path[0].p_depth != 1) || in ext4_ext_try_to_merge_up()
1853 (le16_to_cpu(path[0].p_hdr->eh_entries) != 1) || in ext4_ext_try_to_merge_up()
1854 (le16_to_cpu(path[1].p_hdr->eh_entries) > max_root)) in ext4_ext_try_to_merge_up()
1863 ext4_free_metadata_revoke_credits(inode->i_sb, 1))) in ext4_ext_try_to_merge_up()
1869 blk = ext4_idx_pblock(path[0].p_idx); in ext4_ext_try_to_merge_up()
1870 s = le16_to_cpu(path[1].p_hdr->eh_entries) * in ext4_ext_try_to_merge_up()
1874 path[1].p_maxdepth = path[0].p_maxdepth; in ext4_ext_try_to_merge_up()
1875 memcpy(path[0].p_hdr, path[1].p_hdr, s); in ext4_ext_try_to_merge_up()
1876 path[0].p_depth = 0; in ext4_ext_try_to_merge_up()
1877 path[0].p_ext = EXT_FIRST_EXTENT(path[0].p_hdr) + in ext4_ext_try_to_merge_up()
1878 (path[1].p_ext - EXT_FIRST_EXTENT(path[1].p_hdr)); in ext4_ext_try_to_merge_up()
1879 path[0].p_hdr->eh_max = cpu_to_le16(max_root); in ext4_ext_try_to_merge_up()
1881 brelse(path[1].p_bh); in ext4_ext_try_to_merge_up()
1882 path[1].p_bh = NULL; in ext4_ext_try_to_merge_up()
1893 struct ext4_ext_path *path, in ext4_ext_try_to_merge() argument
1901 BUG_ON(path[depth].p_hdr == NULL); in ext4_ext_try_to_merge()
1902 eh = path[depth].p_hdr; in ext4_ext_try_to_merge()
1905 merge_done = ext4_ext_try_to_merge_right(inode, path, ex - 1); in ext4_ext_try_to_merge()
1908 (void) ext4_ext_try_to_merge_right(inode, path, ex); in ext4_ext_try_to_merge()
1910 ext4_ext_try_to_merge_up(handle, inode, path); in ext4_ext_try_to_merge()
1924 struct ext4_ext_path *path) in ext4_ext_check_overlap() argument
1930 b1 = le32_to_cpu(newext->ee_block); in ext4_ext_check_overlap()
1933 if (!path[depth].p_ext) in ext4_ext_check_overlap()
1935 b2 = EXT4_LBLK_CMASK(sbi, le32_to_cpu(path[depth].p_ext->ee_block)); in ext4_ext_check_overlap()
1938 * get the next allocated block if the extent in the path in ext4_ext_check_overlap()
1942 b2 = ext4_ext_next_allocated_block(path); in ext4_ext_check_overlap()
1950 len1 = EXT_MAX_BLOCKS - b1; in ext4_ext_check_overlap()
1951 newext->ee_len = cpu_to_le16(len1); in ext4_ext_check_overlap()
1957 newext->ee_len = cpu_to_le16(b2 - b1); in ext4_ext_check_overlap()
1968 * creating new leaf in the no-space case.
1974 struct ext4_ext_path *path = *ppath; in ext4_ext_insert_extent() local
1987 return -EFSCORRUPTED; in ext4_ext_insert_extent()
1990 ex = path[depth].p_ext; in ext4_ext_insert_extent()
1991 eh = path[depth].p_hdr; in ext4_ext_insert_extent()
1992 if (unlikely(path[depth].p_hdr == NULL)) { in ext4_ext_insert_extent()
1993 EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth); in ext4_ext_insert_extent()
1994 return -EFSCORRUPTED; in ext4_ext_insert_extent()
2008 (le32_to_cpu(ex->ee_block) + in ext4_ext_insert_extent()
2010 le32_to_cpu(newext->ee_block))) { in ext4_ext_insert_extent()
2014 (le32_to_cpu(newext->ee_block) + in ext4_ext_insert_extent()
2016 le32_to_cpu(ex->ee_block))) in ext4_ext_insert_extent()
2017 ex -= 1; in ext4_ext_insert_extent()
2025 le32_to_cpu(ex->ee_block), in ext4_ext_insert_extent()
2030 path + depth); in ext4_ext_insert_extent()
2034 ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) in ext4_ext_insert_extent()
2047 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2050 le32_to_cpu(ex->ee_block), in ext4_ext_insert_extent()
2055 path + depth); in ext4_ext_insert_extent()
2060 ex->ee_block = newext->ee_block; in ext4_ext_insert_extent()
2062 ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) in ext4_ext_insert_extent()
2072 eh = path[depth].p_hdr; in ext4_ext_insert_extent()
2073 if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max)) in ext4_ext_insert_extent()
2079 if (le32_to_cpu(newext->ee_block) > le32_to_cpu(fex->ee_block)) in ext4_ext_insert_extent()
2080 next = ext4_ext_next_leaf_block(path); in ext4_ext_insert_extent()
2082 ext_debug(inode, "next leaf block - %u\n", next); in ext4_ext_insert_extent()
2087 BUG_ON(npath->p_depth != path->p_depth); in ext4_ext_insert_extent()
2089 if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max)) { in ext4_ext_insert_extent()
2091 le16_to_cpu(eh->eh_entries)); in ext4_ext_insert_extent()
2092 path = npath; in ext4_ext_insert_extent()
2096 le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max)); in ext4_ext_insert_extent()
2109 path = *ppath; in ext4_ext_insert_extent()
2111 eh = path[depth].p_hdr; in ext4_ext_insert_extent()
2114 nearex = path[depth].p_ext; in ext4_ext_insert_extent()
2116 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_insert_extent()
2123 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2129 if (le32_to_cpu(newext->ee_block) in ext4_ext_insert_extent()
2130 > le32_to_cpu(nearex->ee_block)) { in ext4_ext_insert_extent()
2134 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2142 BUG_ON(newext->ee_block == nearex->ee_block); in ext4_ext_insert_extent()
2145 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2151 len = EXT_LAST_EXTENT(eh) - nearex + 1; in ext4_ext_insert_extent()
2155 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2165 le16_add_cpu(&eh->eh_entries, 1); in ext4_ext_insert_extent()
2166 path[depth].p_ext = nearex; in ext4_ext_insert_extent()
2167 nearex->ee_block = newext->ee_block; in ext4_ext_insert_extent()
2169 nearex->ee_len = newext->ee_len; in ext4_ext_insert_extent()
2174 ext4_ext_try_to_merge(handle, inode, path, nearex); in ext4_ext_insert_extent()
2178 err = ext4_ext_correct_indexes(handle, inode, path); in ext4_ext_insert_extent()
2182 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_ext_insert_extent()
2193 ext4_lblk_t next, end = block + num - 1; in ext4_fill_es_cache_info()
2195 unsigned char blksize_bits = inode->i_sb->s_blocksize_bits; in ext4_fill_es_cache_info()
2236 * ext4_ext_find_hole - find hole around given block according to the given path
2238 * @path: path in extent tree to @lblk
2242 * block. We don't try too hard to find the beginning of the hole but @path
2249 struct ext4_ext_path *path, in ext4_ext_find_hole() argument
2256 ex = path[depth].p_ext; in ext4_ext_find_hole()
2258 /* there is no extent yet, so gap is [0;-] */ in ext4_ext_find_hole()
2261 } else if (*lblk < le32_to_cpu(ex->ee_block)) { in ext4_ext_find_hole()
2262 len = le32_to_cpu(ex->ee_block) - *lblk; in ext4_ext_find_hole()
2263 } else if (*lblk >= le32_to_cpu(ex->ee_block) in ext4_ext_find_hole()
2267 *lblk = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_find_hole()
2268 next = ext4_ext_next_allocated_block(path); in ext4_ext_find_hole()
2270 len = next - *lblk; in ext4_ext_find_hole()
2282 struct ext4_ext_path *path, int depth) in ext4_ext_rm_idx() argument
2288 depth--; in ext4_ext_rm_idx()
2289 path = path + depth; in ext4_ext_rm_idx()
2290 leaf = ext4_idx_pblock(path->p_idx); in ext4_ext_rm_idx()
2291 if (unlikely(path->p_hdr->eh_entries == 0)) { in ext4_ext_rm_idx()
2292 EXT4_ERROR_INODE(inode, "path->p_hdr->eh_entries == 0"); in ext4_ext_rm_idx()
2293 return -EFSCORRUPTED; in ext4_ext_rm_idx()
2295 err = ext4_ext_get_access(handle, inode, path); in ext4_ext_rm_idx()
2299 if (path->p_idx != EXT_LAST_INDEX(path->p_hdr)) { in ext4_ext_rm_idx()
2300 int len = EXT_LAST_INDEX(path->p_hdr) - path->p_idx; in ext4_ext_rm_idx()
2302 memmove(path->p_idx, path->p_idx + 1, len); in ext4_ext_rm_idx()
2305 le16_add_cpu(&path->p_hdr->eh_entries, -1); in ext4_ext_rm_idx()
2306 err = ext4_ext_dirty(handle, inode, path); in ext4_ext_rm_idx()
2315 while (--depth >= 0) { in ext4_ext_rm_idx()
2316 if (path->p_idx != EXT_FIRST_INDEX(path->p_hdr)) in ext4_ext_rm_idx()
2318 path--; in ext4_ext_rm_idx()
2319 err = ext4_ext_get_access(handle, inode, path); in ext4_ext_rm_idx()
2322 path->p_idx->ei_block = (path+1)->p_idx->ei_block; in ext4_ext_rm_idx()
2323 err = ext4_ext_dirty(handle, inode, path); in ext4_ext_rm_idx()
2334 * When pass the actual path, the caller should calculate credits
2338 struct ext4_ext_path *path) in ext4_ext_calc_credits_for_single_extent() argument
2340 if (path) { in ext4_ext_calc_credits_for_single_extent()
2345 if (le16_to_cpu(path[depth].p_hdr->eh_entries) in ext4_ext_calc_credits_for_single_extent()
2346 < le16_to_cpu(path[depth].p_hdr->eh_max)) { in ext4_ext_calc_credits_for_single_extent()
2357 ret = 2 + EXT4_META_TRANS_BLOCKS(inode->i_sb); in ext4_ext_calc_credits_for_single_extent()
2395 if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode) || in get_default_free_blocks_flags()
2404 * ext4_rereserve_cluster - increment the reserved cluster count when
2407 * @inode - file containing the cluster
2408 * @lblk - logical block in cluster to be reserved
2420 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_rereserve_cluster()
2425 spin_lock(&ei->i_block_reservation_lock); in ext4_rereserve_cluster()
2426 ei->i_reserved_data_blocks++; in ext4_rereserve_cluster()
2427 percpu_counter_add(&sbi->s_dirtyclusters_counter, 1); in ext4_rereserve_cluster()
2428 spin_unlock(&ei->i_block_reservation_lock); in ext4_rereserve_cluster()
2430 percpu_counter_add(&sbi->s_freeclusters_counter, 1); in ext4_rereserve_cluster()
2439 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_remove_blocks()
2446 if (from < le32_to_cpu(ex->ee_block) || in ext4_remove_blocks()
2447 to != le32_to_cpu(ex->ee_block) + ee_len - 1) { in ext4_remove_blocks()
2448 ext4_error(sbi->s_sb, in ext4_remove_blocks()
2449 "strange request: removal(2) %u-%u from %u:%u", in ext4_remove_blocks()
2450 from, to, le32_to_cpu(ex->ee_block), ee_len); in ext4_remove_blocks()
2455 spin_lock(&sbi->s_ext_stats_lock); in ext4_remove_blocks()
2456 sbi->s_ext_blocks += ee_len; in ext4_remove_blocks()
2457 sbi->s_ext_extents++; in ext4_remove_blocks()
2458 if (ee_len < sbi->s_ext_min) in ext4_remove_blocks()
2459 sbi->s_ext_min = ee_len; in ext4_remove_blocks()
2460 if (ee_len > sbi->s_ext_max) in ext4_remove_blocks()
2461 sbi->s_ext_max = ee_len; in ext4_remove_blocks()
2462 if (ext_depth(inode) > sbi->s_depth_max) in ext4_remove_blocks()
2463 sbi->s_depth_max = ext_depth(inode); in ext4_remove_blocks()
2464 spin_unlock(&sbi->s_ext_stats_lock); in ext4_remove_blocks()
2473 last_pblk = ext4_ext_pblock(ex) + ee_len - 1; in ext4_remove_blocks()
2475 if (partial->state != initial && in ext4_remove_blocks()
2476 partial->pclu != EXT4_B2C(sbi, last_pblk)) { in ext4_remove_blocks()
2477 if (partial->state == tofree) { in ext4_remove_blocks()
2479 if (ext4_is_pending(inode, partial->lblk)) in ext4_remove_blocks()
2482 EXT4_C2B(sbi, partial->pclu), in ext4_remove_blocks()
2483 sbi->s_cluster_ratio, flags); in ext4_remove_blocks()
2485 ext4_rereserve_cluster(inode, partial->lblk); in ext4_remove_blocks()
2487 partial->state = initial; in ext4_remove_blocks()
2490 num = le32_to_cpu(ex->ee_block) + ee_len - from; in ext4_remove_blocks()
2491 pblk = ext4_ext_pblock(ex) + ee_len - num; in ext4_remove_blocks()
2502 if ((EXT4_LBLK_COFF(sbi, to) != sbi->s_cluster_ratio - 1) && in ext4_remove_blocks()
2504 (partial->state != nofree)) { in ext4_remove_blocks()
2509 sbi->s_cluster_ratio, flags); in ext4_remove_blocks()
2512 partial->state = initial; in ext4_remove_blocks()
2528 if (partial->state != initial && partial->pclu != EXT4_B2C(sbi, pblk)) in ext4_remove_blocks()
2529 partial->state = initial; in ext4_remove_blocks()
2538 * cluster - we're either done freeing or the beginning of the in ext4_remove_blocks()
2542 if (partial->state == initial) { in ext4_remove_blocks()
2543 partial->pclu = EXT4_B2C(sbi, pblk); in ext4_remove_blocks()
2544 partial->lblk = from; in ext4_remove_blocks()
2545 partial->state = tofree; in ext4_remove_blocks()
2548 partial->state = initial; in ext4_remove_blocks()
2561 * @path: The path to the leaf
2571 struct ext4_ext_path *path, in ext4_ext_rm_leaf() argument
2575 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_rm_leaf()
2589 if (!path[depth].p_hdr) in ext4_ext_rm_leaf()
2590 path[depth].p_hdr = ext_block_hdr(path[depth].p_bh); in ext4_ext_rm_leaf()
2591 eh = path[depth].p_hdr; in ext4_ext_rm_leaf()
2592 if (unlikely(path[depth].p_hdr == NULL)) { in ext4_ext_rm_leaf()
2593 EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth); in ext4_ext_rm_leaf()
2594 return -EFSCORRUPTED; in ext4_ext_rm_leaf()
2597 ex = path[depth].p_ext; in ext4_ext_rm_leaf()
2601 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2616 path[depth].p_ext = ex; in ext4_ext_rm_leaf()
2619 b = min(ex_ee_block + ex_ee_len - 1, end); in ext4_ext_rm_leaf()
2632 if (sbi->s_cluster_ratio > 1) { in ext4_ext_rm_leaf()
2634 partial->pclu = EXT4_B2C(sbi, pblk); in ext4_ext_rm_leaf()
2635 partial->state = nofree; in ext4_ext_rm_leaf()
2637 ex--; in ext4_ext_rm_leaf()
2638 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2641 } else if (b != ex_ee_block + ex_ee_len - 1) { in ext4_ext_rm_leaf()
2646 ex_ee_block + ex_ee_len - 1); in ext4_ext_rm_leaf()
2647 err = -EFSCORRUPTED; in ext4_ext_rm_leaf()
2651 num = a - ex_ee_block; in ext4_ext_rm_leaf()
2662 credits = 7 + 2*(ex_ee_len/EXT4_BLOCKS_PER_GROUP(inode->i_sb)); in ext4_ext_rm_leaf()
2667 credits += EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb); in ext4_ext_rm_leaf()
2674 ext4_free_metadata_revoke_credits(inode->i_sb, in ext4_ext_rm_leaf()
2676 ext4_free_data_revoke_credits(inode, b - a + 1); in ext4_ext_rm_leaf()
2682 err = -EAGAIN; in ext4_ext_rm_leaf()
2686 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_rm_leaf()
2698 ex->ee_len = cpu_to_le16(num); in ext4_ext_rm_leaf()
2710 if (end != EXT_MAX_BLOCKS - 1) { in ext4_ext_rm_leaf()
2716 memmove(ex, ex+1, (EXT_LAST_EXTENT(eh) - ex) * in ext4_ext_rm_leaf()
2723 le16_add_cpu(&eh->eh_entries, -1); in ext4_ext_rm_leaf()
2726 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_rm_leaf()
2732 ex--; in ext4_ext_rm_leaf()
2733 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2737 if (correct_index && eh->eh_entries) in ext4_ext_rm_leaf()
2738 err = ext4_ext_correct_indexes(handle, inode, path); in ext4_ext_rm_leaf()
2747 if (partial->state == tofree && ex >= EXT_FIRST_EXTENT(eh)) { in ext4_ext_rm_leaf()
2748 pblk = ext4_ext_pblock(ex) + ex_ee_len - 1; in ext4_ext_rm_leaf()
2749 if (partial->pclu != EXT4_B2C(sbi, pblk)) { in ext4_ext_rm_leaf()
2752 if (ext4_is_pending(inode, partial->lblk)) in ext4_ext_rm_leaf()
2755 EXT4_C2B(sbi, partial->pclu), in ext4_ext_rm_leaf()
2756 sbi->s_cluster_ratio, flags); in ext4_ext_rm_leaf()
2758 ext4_rereserve_cluster(inode, partial->lblk); in ext4_ext_rm_leaf()
2760 partial->state = initial; in ext4_ext_rm_leaf()
2765 if (err == 0 && eh->eh_entries == 0 && path[depth].p_bh != NULL) in ext4_ext_rm_leaf()
2766 err = ext4_ext_rm_idx(handle, inode, path, depth); in ext4_ext_rm_leaf()
2777 ext4_ext_more_to_rm(struct ext4_ext_path *path) in ext4_ext_more_to_rm() argument
2779 BUG_ON(path->p_idx == NULL); in ext4_ext_more_to_rm()
2781 if (path->p_idx < EXT_FIRST_INDEX(path->p_hdr)) in ext4_ext_more_to_rm()
2788 if (le16_to_cpu(path->p_hdr->eh_entries) == path->p_block) in ext4_ext_more_to_rm()
2796 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_remove_space()
2798 struct ext4_ext_path *path = NULL; in ext4_ext_remove_space() local
2812 ext4_free_metadata_revoke_credits(inode->i_sb, depth)); in ext4_ext_remove_space()
2826 if (end < EXT_MAX_BLOCKS - 1) { in ext4_ext_remove_space()
2832 path = ext4_find_extent(inode, end, NULL, in ext4_ext_remove_space()
2834 if (IS_ERR(path)) { in ext4_ext_remove_space()
2836 return PTR_ERR(path); in ext4_ext_remove_space()
2840 ex = path[depth].p_ext; in ext4_ext_remove_space()
2844 "path[%d].p_hdr == NULL", in ext4_ext_remove_space()
2846 err = -EFSCORRUPTED; in ext4_ext_remove_space()
2851 ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_remove_space()
2852 ex_end = ee_block + ext4_ext_get_actual_len(ex) - 1; in ext4_ext_remove_space()
2867 if (sbi->s_cluster_ratio > 1) { in ext4_ext_remove_space()
2868 pblk = ext4_ext_pblock(ex) + end - ee_block + 1; in ext4_ext_remove_space()
2879 err = ext4_force_split_extent_at(handle, inode, &path, in ext4_ext_remove_space()
2884 } else if (sbi->s_cluster_ratio > 1 && end >= ex_end && in ext4_ext_remove_space()
2897 err = ext4_ext_search_right(inode, path, &lblk, &pblk, in ext4_ext_remove_space()
2909 * after i_size and walking into the tree depth-wise. in ext4_ext_remove_space()
2912 if (path) { in ext4_ext_remove_space()
2914 while (--k > 0) in ext4_ext_remove_space()
2915 path[k].p_block = in ext4_ext_remove_space()
2916 le16_to_cpu(path[k].p_hdr->eh_entries)+1; in ext4_ext_remove_space()
2918 path = kcalloc(depth + 1, sizeof(struct ext4_ext_path), in ext4_ext_remove_space()
2920 if (path == NULL) { in ext4_ext_remove_space()
2922 return -ENOMEM; in ext4_ext_remove_space()
2924 path[0].p_maxdepth = path[0].p_depth = depth; in ext4_ext_remove_space()
2925 path[0].p_hdr = ext_inode_hdr(inode); in ext4_ext_remove_space()
2928 if (ext4_ext_check(inode, path[0].p_hdr, depth, 0)) { in ext4_ext_remove_space()
2929 err = -EFSCORRUPTED; in ext4_ext_remove_space()
2938 err = ext4_ext_rm_leaf(handle, inode, path, in ext4_ext_remove_space()
2941 brelse(path[i].p_bh); in ext4_ext_remove_space()
2942 path[i].p_bh = NULL; in ext4_ext_remove_space()
2943 i--; in ext4_ext_remove_space()
2948 if (!path[i].p_hdr) { in ext4_ext_remove_space()
2950 path[i].p_hdr = ext_block_hdr(path[i].p_bh); in ext4_ext_remove_space()
2953 if (!path[i].p_idx) { in ext4_ext_remove_space()
2955 path[i].p_idx = EXT_LAST_INDEX(path[i].p_hdr); in ext4_ext_remove_space()
2956 path[i].p_block = le16_to_cpu(path[i].p_hdr->eh_entries)+1; in ext4_ext_remove_space()
2958 path[i].p_hdr, in ext4_ext_remove_space()
2959 le16_to_cpu(path[i].p_hdr->eh_entries)); in ext4_ext_remove_space()
2962 path[i].p_idx--; in ext4_ext_remove_space()
2965 ext_debug(inode, "level %d - index, first 0x%p, cur 0x%p\n", in ext4_ext_remove_space()
2966 i, EXT_FIRST_INDEX(path[i].p_hdr), in ext4_ext_remove_space()
2967 path[i].p_idx); in ext4_ext_remove_space()
2968 if (ext4_ext_more_to_rm(path + i)) { in ext4_ext_remove_space()
2972 i + 1, ext4_idx_pblock(path[i].p_idx)); in ext4_ext_remove_space()
2973 memset(path + i + 1, 0, sizeof(*path)); in ext4_ext_remove_space()
2974 bh = read_extent_tree_block(inode, path[i].p_idx, in ext4_ext_remove_space()
2975 depth - i - 1, in ext4_ext_remove_space()
2983 * Should be a no-op if we did IO above. */ in ext4_ext_remove_space()
2986 err = -EFSCORRUPTED; in ext4_ext_remove_space()
2989 path[i + 1].p_bh = bh; in ext4_ext_remove_space()
2993 path[i].p_block = le16_to_cpu(path[i].p_hdr->eh_entries); in ext4_ext_remove_space()
2997 if (path[i].p_hdr->eh_entries == 0 && i > 0) { in ext4_ext_remove_space()
3001 err = ext4_ext_rm_idx(handle, inode, path, i); in ext4_ext_remove_space()
3004 brelse(path[i].p_bh); in ext4_ext_remove_space()
3005 path[i].p_bh = NULL; in ext4_ext_remove_space()
3006 i--; in ext4_ext_remove_space()
3012 path->p_hdr->eh_entries); in ext4_ext_remove_space()
3025 sbi->s_cluster_ratio, flags); in ext4_ext_remove_space()
3032 if (path->p_hdr->eh_entries == 0) { in ext4_ext_remove_space()
3037 err = ext4_ext_get_access(handle, inode, path); in ext4_ext_remove_space()
3039 ext_inode_hdr(inode)->eh_depth = 0; in ext4_ext_remove_space()
3040 ext_inode_hdr(inode)->eh_max = in ext4_ext_remove_space()
3042 err = ext4_ext_dirty(handle, inode, path); in ext4_ext_remove_space()
3046 ext4_free_ext_path(path); in ext4_ext_remove_space()
3047 path = NULL; in ext4_ext_remove_space()
3048 if (err == -EAGAIN) in ext4_ext_remove_space()
3066 printk(KERN_INFO "EXT4-fs: file extents enabled" in ext4_ext_init()
3079 spin_lock_init(&EXT4_SB(sb)->s_ext_stats_lock); in ext4_ext_init()
3080 EXT4_SB(sb)->s_ext_min = 1 << 30; in ext4_ext_init()
3081 EXT4_SB(sb)->s_ext_max = 0; in ext4_ext_init()
3095 if (EXT4_SB(sb)->s_ext_blocks && EXT4_SB(sb)->s_ext_extents) { in ext4_ext_release()
3097 printk(KERN_ERR "EXT4-fs: %lu blocks in %lu extents (%lu ave)\n", in ext4_ext_release()
3098 sbi->s_ext_blocks, sbi->s_ext_extents, in ext4_ext_release()
3099 sbi->s_ext_blocks / sbi->s_ext_extents); in ext4_ext_release()
3100 printk(KERN_ERR "EXT4-fs: extents: %lu min, %lu max, max depth %lu\n", in ext4_ext_release()
3101 sbi->s_ext_min, sbi->s_ext_max, sbi->s_depth_max); in ext4_ext_release()
3112 ee_block = le32_to_cpu(ex->ee_block); in ext4_zeroout_es()
3123 /* FIXME!! we need to try to merge to left or right after zero-out */
3131 return ext4_issue_zeroout(inode, le32_to_cpu(ex->ee_block), ee_pblock, in ext4_ext_zeroout()
3140 * @path: the path to the extent
3163 struct ext4_ext_path *path = *ppath; in ext4_split_extent_at() local
3176 ext4_ext_show_leaf(inode, path); in ext4_split_extent_at()
3179 ex = path[depth].p_ext; in ext4_split_extent_at()
3180 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_extent_at()
3182 newblock = split - ee_block + ext4_ext_pblock(ex); in ext4_split_extent_at()
3190 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_split_extent_at()
3206 ext4_ext_try_to_merge(handle, inode, path, ex); in ext4_split_extent_at()
3208 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3214 ex->ee_len = cpu_to_le16(split - ee_block); in ext4_split_extent_at()
3219 * path may lead to new leaf, not to original leaf any more in ext4_split_extent_at()
3222 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_split_extent_at()
3227 ex2->ee_block = cpu_to_le32(split); in ext4_split_extent_at()
3228 ex2->ee_len = cpu_to_le16(ee_len - (split - ee_block)); in ext4_split_extent_at()
3234 if (err != -ENOSPC && err != -EDQUOT && err != -ENOMEM) in ext4_split_extent_at()
3238 * Update path is required because previous ext4_ext_insert_extent() in ext4_split_extent_at()
3239 * may have freed or reallocated the path. Using EXT4_EX_NOFAIL in ext4_split_extent_at()
3240 * guarantees that ext4_find_extent() will not return -ENOMEM, in ext4_split_extent_at()
3241 * otherwise -ENOMEM will cause a retry in do_writepages(), and a in ext4_split_extent_at()
3245 path = ext4_find_extent(inode, ee_block, ppath, in ext4_split_extent_at()
3247 if (IS_ERR(path)) { in ext4_split_extent_at()
3249 split, PTR_ERR(path)); in ext4_split_extent_at()
3250 return PTR_ERR(path); in ext4_split_extent_at()
3253 ex = path[depth].p_ext; in ext4_split_extent_at()
3259 zero_ex.ee_block = ex2->ee_block; in ext4_split_extent_at()
3266 zero_ex.ee_block = ex->ee_block; in ext4_split_extent_at()
3283 ex->ee_len = cpu_to_le16(ee_len); in ext4_split_extent_at()
3284 ext4_ext_try_to_merge(handle, inode, path, ex); in ext4_split_extent_at()
3285 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3299 ex->ee_len = orig_ex.ee_len; in ext4_split_extent_at()
3301 * Ignore ext4_ext_dirty return value since we are already in error path in ext4_split_extent_at()
3302 * and err is a non-zero error code. in ext4_split_extent_at()
3304 ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3313 * by @map as split_flags indicates
3325 struct ext4_map_blocks *map, in ext4_split_extent() argument
3329 struct ext4_ext_path *path = *ppath; in ext4_split_extent() local
3336 int allocated = map->m_len; in ext4_split_extent()
3339 ex = path[depth].p_ext; in ext4_split_extent()
3340 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_extent()
3344 if (map->m_lblk + map->m_len < ee_block + ee_len) { in ext4_split_extent()
3353 map->m_lblk + map->m_len, split_flag1, flags1); in ext4_split_extent()
3357 allocated = ee_len - (map->m_lblk - ee_block); in ext4_split_extent()
3360 * Update path is required because previous ext4_split_extent_at() may in ext4_split_extent()
3363 path = ext4_find_extent(inode, map->m_lblk, ppath, flags); in ext4_split_extent()
3364 if (IS_ERR(path)) in ext4_split_extent()
3365 return PTR_ERR(path); in ext4_split_extent()
3367 ex = path[depth].p_ext; in ext4_split_extent()
3370 (unsigned long) map->m_lblk); in ext4_split_extent()
3371 return -EFSCORRUPTED; in ext4_split_extent()
3375 if (map->m_lblk >= ee_block) { in ext4_split_extent()
3383 map->m_lblk, split_flag1, flags); in ext4_split_extent()
3388 ext4_ext_show_leaf(inode, path); in ext4_split_extent()
3396 * extent into multiple extents (up to three - one initialized and two
3403 * Pre-conditions:
3404 * - The extent pointed to by 'path' is unwritten.
3405 * - The extent pointed to by 'path' contains a superset
3406 * of the logical span [map->m_lblk, map->m_lblk + map->m_len).
3408 * Post-conditions on success:
3409 * - the returned value is the number of blocks beyond map->l_lblk
3411 * It is guaranteed to be >= map->m_len.
3415 struct ext4_map_blocks *map, in ext4_ext_convert_to_initialized() argument
3419 struct ext4_ext_path *path = *ppath; in ext4_ext_convert_to_initialized() local
3426 unsigned int ee_len, depth, map_len = map->m_len; in ext4_ext_convert_to_initialized()
3433 (unsigned long long)map->m_lblk, map_len); in ext4_ext_convert_to_initialized()
3435 sbi = EXT4_SB(inode->i_sb); in ext4_ext_convert_to_initialized()
3436 eof_block = (EXT4_I(inode)->i_disksize + inode->i_sb->s_blocksize - 1) in ext4_ext_convert_to_initialized()
3437 >> inode->i_sb->s_blocksize_bits; in ext4_ext_convert_to_initialized()
3438 if (eof_block < map->m_lblk + map_len) in ext4_ext_convert_to_initialized()
3439 eof_block = map->m_lblk + map_len; in ext4_ext_convert_to_initialized()
3442 eh = path[depth].p_hdr; in ext4_ext_convert_to_initialized()
3443 ex = path[depth].p_ext; in ext4_ext_convert_to_initialized()
3444 ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_convert_to_initialized()
3449 trace_ext4_ext_convert_to_initialized_enter(inode, map, ex); in ext4_ext_convert_to_initialized()
3451 /* Pre-conditions */ in ext4_ext_convert_to_initialized()
3453 BUG_ON(!in_range(map->m_lblk, ee_block, ee_len)); in ext4_ext_convert_to_initialized()
3464 * - L1: we do not deal with writes covering the whole extent. in ext4_ext_convert_to_initialized()
3467 * - L2: we only attempt to merge with an extent stored in the in ext4_ext_convert_to_initialized()
3470 if ((map->m_lblk == ee_block) && in ext4_ext_convert_to_initialized()
3478 abut_ex = ex - 1; in ext4_ext_convert_to_initialized()
3479 prev_lblk = le32_to_cpu(abut_ex->ee_block); in ext4_ext_convert_to_initialized()
3487 * - C1: abut_ex is initialized, in ext4_ext_convert_to_initialized()
3488 * - C2: abut_ex is logically abutting ex, in ext4_ext_convert_to_initialized()
3489 * - C3: abut_ex is physically abutting ex, in ext4_ext_convert_to_initialized()
3490 * - C4: abut_ex can receive the additional blocks without in ext4_ext_convert_to_initialized()
3496 (prev_len < (EXT_INIT_MAX_LEN - map_len))) { /*C4*/ in ext4_ext_convert_to_initialized()
3497 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3502 map, ex, abut_ex); in ext4_ext_convert_to_initialized()
3505 ex->ee_block = cpu_to_le32(ee_block + map_len); in ext4_ext_convert_to_initialized()
3507 ex->ee_len = cpu_to_le16(ee_len - map_len); in ext4_ext_convert_to_initialized()
3511 abut_ex->ee_len = cpu_to_le16(prev_len + map_len); in ext4_ext_convert_to_initialized()
3516 } else if (((map->m_lblk + map_len) == (ee_block + ee_len)) && in ext4_ext_convert_to_initialized()
3525 next_lblk = le32_to_cpu(abut_ex->ee_block); in ext4_ext_convert_to_initialized()
3533 * - C1: abut_ex is initialized, in ext4_ext_convert_to_initialized()
3534 * - C2: abut_ex is logically abutting ex, in ext4_ext_convert_to_initialized()
3535 * - C3: abut_ex is physically abutting ex, in ext4_ext_convert_to_initialized()
3536 * - C4: abut_ex can receive the additional blocks without in ext4_ext_convert_to_initialized()
3540 ((map->m_lblk + map_len) == next_lblk) && /*C2*/ in ext4_ext_convert_to_initialized()
3542 (next_len < (EXT_INIT_MAX_LEN - map_len))) { /*C4*/ in ext4_ext_convert_to_initialized()
3543 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3548 map, ex, abut_ex); in ext4_ext_convert_to_initialized()
3551 abut_ex->ee_block = cpu_to_le32(next_lblk - map_len); in ext4_ext_convert_to_initialized()
3552 ext4_ext_store_pblock(abut_ex, next_pblk - map_len); in ext4_ext_convert_to_initialized()
3553 ex->ee_len = cpu_to_le16(ee_len - map_len); in ext4_ext_convert_to_initialized()
3557 abut_ex->ee_len = cpu_to_le16(next_len + map_len); in ext4_ext_convert_to_initialized()
3565 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3567 /* Update path to point to the right extent */ in ext4_ext_convert_to_initialized()
3568 path[depth].p_ext = abut_ex; in ext4_ext_convert_to_initialized()
3571 allocated = ee_len - (map->m_lblk - ee_block); in ext4_ext_convert_to_initialized()
3573 WARN_ON(map->m_lblk < ee_block); in ext4_ext_convert_to_initialized()
3581 max_zeroout = sbi->s_extent_max_zeroout_kb >> in ext4_ext_convert_to_initialized()
3582 (inode->i_sb->s_blocksize_bits - 10); in ext4_ext_convert_to_initialized()
3595 split_map.m_lblk = map->m_lblk; in ext4_ext_convert_to_initialized()
3596 split_map.m_len = map->m_len; in ext4_ext_convert_to_initialized()
3605 cpu_to_le16(allocated - split_map.m_len); in ext4_ext_convert_to_initialized()
3608 split_map.m_len - ee_block); in ext4_ext_convert_to_initialized()
3614 if (split_map.m_lblk - ee_block + split_map.m_len < in ext4_ext_convert_to_initialized()
3618 zero_ex2.ee_block = ex->ee_block; in ext4_ext_convert_to_initialized()
3619 zero_ex2.ee_len = cpu_to_le16(split_map.m_lblk - in ext4_ext_convert_to_initialized()
3628 split_map.m_len += split_map.m_lblk - ee_block; in ext4_ext_convert_to_initialized()
3630 allocated = map->m_len; in ext4_ext_convert_to_initialized()
3660 * This works the same way in the case of initialized -> unwritten conversion.
3674 struct ext4_map_blocks *map, in ext4_split_convert_extents() argument
3678 struct ext4_ext_path *path = *ppath; in ext4_split_convert_extents() local
3686 (unsigned long long)map->m_lblk, map->m_len); in ext4_split_convert_extents()
3688 eof_block = (EXT4_I(inode)->i_disksize + inode->i_sb->s_blocksize - 1) in ext4_split_convert_extents()
3689 >> inode->i_sb->s_blocksize_bits; in ext4_split_convert_extents()
3690 if (eof_block < map->m_lblk + map->m_len) in ext4_split_convert_extents()
3691 eof_block = map->m_lblk + map->m_len; in ext4_split_convert_extents()
3697 ex = path[depth].p_ext; in ext4_split_convert_extents()
3698 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_convert_extents()
3711 return ext4_split_extent(handle, inode, ppath, map, split_flag, flags); in ext4_split_convert_extents()
3716 struct ext4_map_blocks *map, in ext4_convert_unwritten_extents_endio() argument
3719 struct ext4_ext_path *path = *ppath; in ext4_convert_unwritten_extents_endio() local
3727 ex = path[depth].p_ext; in ext4_convert_unwritten_extents_endio()
3728 ee_block = le32_to_cpu(ex->ee_block); in ext4_convert_unwritten_extents_endio()
3740 if (ee_block != map->m_lblk || ee_len > map->m_len) { in ext4_convert_unwritten_extents_endio()
3742 ext4_warning(inode->i_sb, "Inode (%ld) finished: extent logical block %llu," in ext4_convert_unwritten_extents_endio()
3744 inode->i_ino, (unsigned long long)ee_block, ee_len, in ext4_convert_unwritten_extents_endio()
3745 (unsigned long long)map->m_lblk, map->m_len); in ext4_convert_unwritten_extents_endio()
3747 err = ext4_split_convert_extents(handle, inode, map, ppath, in ext4_convert_unwritten_extents_endio()
3751 path = ext4_find_extent(inode, map->m_lblk, ppath, 0); in ext4_convert_unwritten_extents_endio()
3752 if (IS_ERR(path)) in ext4_convert_unwritten_extents_endio()
3753 return PTR_ERR(path); in ext4_convert_unwritten_extents_endio()
3755 ex = path[depth].p_ext; in ext4_convert_unwritten_extents_endio()
3758 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_convert_unwritten_extents_endio()
3767 ext4_ext_try_to_merge(handle, inode, path, ex); in ext4_convert_unwritten_extents_endio()
3770 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_convert_unwritten_extents_endio()
3772 ext4_ext_show_leaf(inode, path); in ext4_convert_unwritten_extents_endio()
3778 struct ext4_map_blocks *map, in convert_initialized_extent() argument
3782 struct ext4_ext_path *path = *ppath; in convert_initialized_extent() local
3793 if (map->m_len > EXT_UNWRITTEN_MAX_LEN) in convert_initialized_extent()
3794 map->m_len = EXT_UNWRITTEN_MAX_LEN / 2; in convert_initialized_extent()
3797 ex = path[depth].p_ext; in convert_initialized_extent()
3798 ee_block = le32_to_cpu(ex->ee_block); in convert_initialized_extent()
3804 if (ee_block != map->m_lblk || ee_len > map->m_len) { in convert_initialized_extent()
3805 err = ext4_split_convert_extents(handle, inode, map, ppath, in convert_initialized_extent()
3809 path = ext4_find_extent(inode, map->m_lblk, ppath, 0); in convert_initialized_extent()
3810 if (IS_ERR(path)) in convert_initialized_extent()
3811 return PTR_ERR(path); in convert_initialized_extent()
3813 ex = path[depth].p_ext; in convert_initialized_extent()
3816 (unsigned long) map->m_lblk); in convert_initialized_extent()
3817 return -EFSCORRUPTED; in convert_initialized_extent()
3821 err = ext4_ext_get_access(handle, inode, path + depth); in convert_initialized_extent()
3830 ext4_ext_try_to_merge(handle, inode, path, ex); in convert_initialized_extent()
3833 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in convert_initialized_extent()
3836 ext4_ext_show_leaf(inode, path); in convert_initialized_extent()
3840 map->m_flags |= EXT4_MAP_UNWRITTEN; in convert_initialized_extent()
3841 if (*allocated > map->m_len) in convert_initialized_extent()
3842 *allocated = map->m_len; in convert_initialized_extent()
3843 map->m_len = *allocated; in convert_initialized_extent()
3849 struct ext4_map_blocks *map, in ext4_ext_handle_unwritten_extents() argument
3853 struct ext4_ext_path __maybe_unused *path = *ppath; in ext4_ext_handle_unwritten_extents() local
3858 (unsigned long long)map->m_lblk, map->m_len, flags, in ext4_ext_handle_unwritten_extents()
3860 ext4_ext_show_leaf(inode, path); in ext4_ext_handle_unwritten_extents()
3868 trace_ext4_ext_handle_unwritten_extents(inode, map, flags, in ext4_ext_handle_unwritten_extents()
3873 ret = ext4_split_convert_extents(handle, inode, map, ppath, in ext4_ext_handle_unwritten_extents()
3886 map->m_len); in ext4_ext_handle_unwritten_extents()
3887 err = -EFSCORRUPTED; in ext4_ext_handle_unwritten_extents()
3890 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3895 err = ext4_convert_unwritten_extents_endio(handle, inode, map, in ext4_ext_handle_unwritten_extents()
3908 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3921 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3930 ret = ext4_ext_convert_to_initialized(handle, inode, map, ppath, flags); in ext4_ext_handle_unwritten_extents()
3942 map->m_len); in ext4_ext_handle_unwritten_extents()
3943 err = -EFSCORRUPTED; in ext4_ext_handle_unwritten_extents()
3949 map->m_flags |= EXT4_MAP_NEW; in ext4_ext_handle_unwritten_extents()
3951 map->m_flags |= EXT4_MAP_MAPPED; in ext4_ext_handle_unwritten_extents()
3953 map->m_pblk = newblock; in ext4_ext_handle_unwritten_extents()
3954 if (allocated > map->m_len) in ext4_ext_handle_unwritten_extents()
3955 allocated = map->m_len; in ext4_ext_handle_unwritten_extents()
3956 map->m_len = allocated; in ext4_ext_handle_unwritten_extents()
3957 ext4_ext_show_leaf(inode, path); in ext4_ext_handle_unwritten_extents()
3963 * get_implied_cluster_alloc - check to see if the requested
3964 * allocation (in the map structure) overlaps with a cluster already
3967 * @map The requested lblk->pblk mapping
3977 * |--- cluster # N--|
3978 * |--- extent ---| |---- requested region ---|
3983 * |--------- cluster # N ----------------|
3984 * |--- requested region --| |------- extent ----|
3989 * |------------- cluster # N-------------|
3990 * |----- ex -----| |---- ex_right ----|
3991 * |------ requested region ------|
3994 * In each of the above cases, we need to set the map->m_pblk and
3995 * map->m_len so it corresponds to the return the extent labelled as
3997 * cluster EXT4_B2C(sbi, map->m_lblk). We will then return 1 to
3998 * signal to ext4_ext_map_blocks() that map->m_pblk should be treated
4004 struct ext4_map_blocks *map, in get_implied_cluster_alloc() argument
4006 struct ext4_ext_path *path) in get_implied_cluster_alloc() argument
4009 ext4_lblk_t c_offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in get_implied_cluster_alloc()
4012 ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block); in get_implied_cluster_alloc()
4018 ex_cluster_end = EXT4_B2C(sbi, ee_block + ee_len - 1); in get_implied_cluster_alloc()
4021 rr_cluster_start = EXT4_B2C(sbi, map->m_lblk); in get_implied_cluster_alloc()
4026 ee_start += ee_len - 1; in get_implied_cluster_alloc()
4027 map->m_pblk = EXT4_PBLK_CMASK(sbi, ee_start) + c_offset; in get_implied_cluster_alloc()
4028 map->m_len = min(map->m_len, in get_implied_cluster_alloc()
4029 (unsigned) sbi->s_cluster_ratio - c_offset); in get_implied_cluster_alloc()
4033 * |--------- cluster # N-------------| in get_implied_cluster_alloc()
4034 * |------- extent ----| in get_implied_cluster_alloc()
4035 * |--- requested region ---| in get_implied_cluster_alloc()
4039 if (map->m_lblk < ee_block) in get_implied_cluster_alloc()
4040 map->m_len = min(map->m_len, ee_block - map->m_lblk); in get_implied_cluster_alloc()
4046 * |------------- cluster # N-------------| in get_implied_cluster_alloc()
4047 * |----- ex -----| |---- ex_right ----| in get_implied_cluster_alloc()
4048 * |------ requested region ------| in get_implied_cluster_alloc()
4051 if (map->m_lblk > ee_block) { in get_implied_cluster_alloc()
4052 ext4_lblk_t next = ext4_ext_next_allocated_block(path); in get_implied_cluster_alloc()
4053 map->m_len = min(map->m_len, next - map->m_lblk); in get_implied_cluster_alloc()
4056 trace_ext4_get_implied_cluster_alloc_exit(sb, map, 1); in get_implied_cluster_alloc()
4060 trace_ext4_get_implied_cluster_alloc_exit(sb, map, 0); in get_implied_cluster_alloc()
4066 * locate and expand the hole from the given @path, and then adjust it
4072 struct ext4_ext_path *path, in ext4_ext_determine_insert_hole() argument
4079 len = ext4_ext_find_hole(inode, path, &hole_start); in ext4_ext_determine_insert_hole()
4082 hole_start + len - 1, &es); in ext4_ext_determine_insert_hole()
4095 len -= lblk - hole_start; in ext4_ext_determine_insert_hole()
4105 len = es.es_lblk + es.es_len - lblk; in ext4_ext_determine_insert_hole()
4113 len = min(es.es_lblk - hole_start, len); in ext4_ext_determine_insert_hole()
4118 ext_debug(inode, " -> %u:%u\n", hole_start, len); in ext4_ext_determine_insert_hole()
4123 len -= lblk - hole_start; in ext4_ext_determine_insert_hole()
4129 * Block allocation/map/preallocation routine for extents based files
4133 * down_read(&EXT4_I(inode)->i_data_sem) if not allocating file system block
4134 * (ie, create is zero). Otherwise down_write(&EXT4_I(inode)->i_data_sem)
4137 * if create == 0 and these are pre-allocated blocks
4147 struct ext4_map_blocks *map, int flags) in ext4_ext_map_blocks() argument
4149 struct ext4_ext_path *path = NULL; in ext4_ext_map_blocks() local
4151 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_map_blocks()
4159 ext_debug(inode, "blocks %u/%u requested\n", map->m_lblk, map->m_len); in ext4_ext_map_blocks()
4160 trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags); in ext4_ext_map_blocks()
4163 path = ext4_find_extent(inode, map->m_lblk, NULL, 0); in ext4_ext_map_blocks()
4164 if (IS_ERR(path)) { in ext4_ext_map_blocks()
4165 err = PTR_ERR(path); in ext4_ext_map_blocks()
4166 path = NULL; in ext4_ext_map_blocks()
4177 if (unlikely(path[depth].p_ext == NULL && depth != 0)) { in ext4_ext_map_blocks()
4180 (unsigned long) map->m_lblk, depth, in ext4_ext_map_blocks()
4181 path[depth].p_block); in ext4_ext_map_blocks()
4182 err = -EFSCORRUPTED; in ext4_ext_map_blocks()
4186 ex = path[depth].p_ext; in ext4_ext_map_blocks()
4188 ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_map_blocks()
4202 if (in_range(map->m_lblk, ee_block, ee_len)) { in ext4_ext_map_blocks()
4203 newblock = map->m_lblk - ee_block + ee_start; in ext4_ext_map_blocks()
4205 allocated = ee_len - (map->m_lblk - ee_block); in ext4_ext_map_blocks()
4206 ext_debug(inode, "%u fit into %u:%d -> %llu\n", in ext4_ext_map_blocks()
4207 map->m_lblk, ee_block, ee_len, newblock); in ext4_ext_map_blocks()
4216 inode, map, &path, &allocated); in ext4_ext_map_blocks()
4219 map->m_flags |= EXT4_MAP_MAPPED; in ext4_ext_map_blocks()
4220 map->m_pblk = newblock; in ext4_ext_map_blocks()
4221 if (allocated > map->m_len) in ext4_ext_map_blocks()
4222 allocated = map->m_len; in ext4_ext_map_blocks()
4223 map->m_len = allocated; in ext4_ext_map_blocks()
4224 ext4_ext_show_leaf(inode, path); in ext4_ext_map_blocks()
4229 handle, inode, map, &path, flags, in ext4_ext_map_blocks()
4246 len = ext4_ext_determine_insert_hole(inode, path, map->m_lblk); in ext4_ext_map_blocks()
4248 map->m_pblk = 0; in ext4_ext_map_blocks()
4249 map->m_len = min_t(unsigned int, map->m_len, len); in ext4_ext_map_blocks()
4256 newex.ee_block = cpu_to_le32(map->m_lblk); in ext4_ext_map_blocks()
4257 cluster_offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in ext4_ext_map_blocks()
4264 get_implied_cluster_alloc(inode->i_sb, map, ex, path)) { in ext4_ext_map_blocks()
4265 ar.len = allocated = map->m_len; in ext4_ext_map_blocks()
4266 newblock = map->m_pblk; in ext4_ext_map_blocks()
4271 ar.lleft = map->m_lblk; in ext4_ext_map_blocks()
4272 err = ext4_ext_search_left(inode, path, &ar.lleft, &ar.pleft); in ext4_ext_map_blocks()
4275 ar.lright = map->m_lblk; in ext4_ext_map_blocks()
4276 err = ext4_ext_search_right(inode, path, &ar.lright, &ar.pright, &ex2); in ext4_ext_map_blocks()
4282 if ((sbi->s_cluster_ratio > 1) && err && in ext4_ext_map_blocks()
4283 get_implied_cluster_alloc(inode->i_sb, map, &ex2, path)) { in ext4_ext_map_blocks()
4284 ar.len = allocated = map->m_len; in ext4_ext_map_blocks()
4285 newblock = map->m_pblk; in ext4_ext_map_blocks()
4295 if (map->m_len > EXT_INIT_MAX_LEN && in ext4_ext_map_blocks()
4297 map->m_len = EXT_INIT_MAX_LEN; in ext4_ext_map_blocks()
4298 else if (map->m_len > EXT_UNWRITTEN_MAX_LEN && in ext4_ext_map_blocks()
4300 map->m_len = EXT_UNWRITTEN_MAX_LEN; in ext4_ext_map_blocks()
4303 newex.ee_len = cpu_to_le16(map->m_len); in ext4_ext_map_blocks()
4304 err = ext4_ext_check_overlap(sbi, inode, &newex, path); in ext4_ext_map_blocks()
4308 allocated = map->m_len; in ext4_ext_map_blocks()
4312 ar.goal = ext4_ext_find_goal(inode, path, map->m_lblk); in ext4_ext_map_blocks()
4313 ar.logical = map->m_lblk; in ext4_ext_map_blocks()
4322 offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in ext4_ext_map_blocks()
4324 ar.goal -= offset; in ext4_ext_map_blocks()
4325 ar.logical -= offset; in ext4_ext_map_blocks()
4326 if (S_ISREG(inode->i_mode)) in ext4_ext_map_blocks()
4329 /* disable in-core preallocation for non-regular files */ in ext4_ext_map_blocks()
4341 ar.len = EXT4_C2B(sbi, ar.len) - offset; in ext4_ext_map_blocks()
4355 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_map_blocks()
4358 err = ext4_ext_insert_extent(handle, inode, &path, &newex, flags); in ext4_ext_map_blocks()
4384 if (test_opt(inode->i_sb, DELALLOC) && allocated_clusters) { in ext4_ext_map_blocks()
4397 * When allocating non-delayed allocated clusters in ext4_ext_map_blocks()
4407 lblk = EXT4_LBLK_CMASK(sbi, map->m_lblk); in ext4_ext_map_blocks()
4408 len = allocated_clusters << sbi->s_cluster_bits; in ext4_ext_map_blocks()
4424 map->m_flags |= (EXT4_MAP_NEW | EXT4_MAP_MAPPED); in ext4_ext_map_blocks()
4425 map->m_pblk = pblk; in ext4_ext_map_blocks()
4426 map->m_len = ar.len; in ext4_ext_map_blocks()
4427 allocated = map->m_len; in ext4_ext_map_blocks()
4428 ext4_ext_show_leaf(inode, path); in ext4_ext_map_blocks()
4430 ext4_free_ext_path(path); in ext4_ext_map_blocks()
4432 trace_ext4_ext_map_blocks_exit(inode, flags, map, in ext4_ext_map_blocks()
4439 struct super_block *sb = inode->i_sb; in ext4_ext_truncate()
4450 EXT4_I(inode)->i_disksize = inode->i_size; in ext4_ext_truncate()
4455 last_block = (inode->i_size + sb->s_blocksize - 1) in ext4_ext_truncate()
4457 ext4_es_remove_extent(inode, last_block, EXT_MAX_BLOCKS - last_block); in ext4_ext_truncate()
4460 err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1); in ext4_ext_truncate()
4461 if (err == -ENOMEM) { in ext4_ext_truncate()
4477 struct ext4_map_blocks map; in ext4_alloc_file_blocks() local
4482 map.m_lblk = offset; in ext4_alloc_file_blocks()
4483 map.m_len = len; in ext4_alloc_file_blocks()
4514 ret = ext4_map_blocks(handle, inode, &map, flags); in ext4_alloc_file_blocks()
4518 inode->i_ino, map.m_lblk, in ext4_alloc_file_blocks()
4519 map.m_len, ret); in ext4_alloc_file_blocks()
4528 map.m_lblk += ret; in ext4_alloc_file_blocks()
4529 map.m_len = len = len - ret; in ext4_alloc_file_blocks()
4530 epos = (loff_t)map.m_lblk << inode->i_blkbits; in ext4_alloc_file_blocks()
4541 old_size, epos - old_size); in ext4_alloc_file_blocks()
4551 if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) in ext4_alloc_file_blocks()
4565 struct address_space *mapping = file->f_mapping; in ext4_zero_range()
4575 unsigned int blkbits = inode->i_blkbits; in ext4_zero_range()
4590 return -EINVAL; in ext4_zero_range()
4591 partial_begin = offset & ((1 << blkbits) - 1); in ext4_zero_range()
4592 partial_end = (offset + len) & ((1 << blkbits) - 1); in ext4_zero_range()
4599 max_blocks -= lblk; in ext4_zero_range()
4607 ret = -EOPNOTSUPP; in ext4_zero_range()
4612 (offset + len > inode->i_size || in ext4_zero_range()
4613 offset + len > EXT4_I(inode)->i_disksize)) { in ext4_zero_range()
4633 (round_up((offset + len), 1 << blkbits) - in ext4_zero_range()
4671 end - 1); in ext4_zero_range()
4679 truncate_pagecache_range(inode, start, end - 1); in ext4_zero_range()
4701 ext4_std_error(inode->i_sb, ret); in ext4_zero_range()
4716 if (file->f_flags & O_SYNC) in ext4_zero_range()
4729 * For block-mapped files, posix_fallocate should fall back to the method
4741 unsigned int blkbits = inode->i_blkbits; in ext4_fallocate()
4745 * range since we would need to re-encrypt blocks with a in ext4_fallocate()
4751 return -EOPNOTSUPP; in ext4_fallocate()
4757 return -EOPNOTSUPP; in ext4_fallocate()
4793 * We only support preallocation for extent-based files only in ext4_fallocate()
4796 ret = -EOPNOTSUPP; in ext4_fallocate()
4801 (offset + len > inode->i_size || in ext4_fallocate()
4802 offset + len > EXT4_I(inode)->i_disksize)) { in ext4_fallocate()
4820 if (file->f_flags & O_SYNC && EXT4_SB(inode->i_sb)->s_journal) { in ext4_fallocate()
4821 ret = ext4_fc_commit(EXT4_SB(inode->i_sb)->s_journal, in ext4_fallocate()
4822 EXT4_I(inode)->i_sync_tid); in ext4_fallocate()
4846 struct ext4_map_blocks map; in ext4_convert_unwritten_extents() local
4847 unsigned int blkbits = inode->i_blkbits; in ext4_convert_unwritten_extents()
4850 map.m_lblk = offset >> blkbits; in ext4_convert_unwritten_extents()
4860 map.m_lblk += ret; in ext4_convert_unwritten_extents()
4861 map.m_len = (max_blocks -= ret); in ext4_convert_unwritten_extents()
4870 ret = ext4_map_blocks(handle, inode, &map, in ext4_convert_unwritten_extents()
4873 ext4_warning(inode->i_sb, in ext4_convert_unwritten_extents()
4876 inode->i_ino, map.m_lblk, in ext4_convert_unwritten_extents()
4877 map.m_len, ret); in ext4_convert_unwritten_extents()
4908 list_for_each_entry(io_end_vec, &io_end->list_vec, list) { in ext4_convert_unwritten_io_end_vec()
4909 ret = ext4_convert_unwritten_extents(handle, io_end->inode, in ext4_convert_unwritten_io_end_vec()
4910 io_end_vec->offset, in ext4_convert_unwritten_io_end_vec()
4911 io_end_vec->size); in ext4_convert_unwritten_io_end_vec()
4926 int blockbits = inode->i_sb->s_blocksize_bits; in ext4_iomap_xattr_fiemap()
4930 /* in-inode? */ in ext4_iomap_xattr_fiemap()
4938 physical = (__u64)iloc.bh->b_blocknr << blockbits; in ext4_iomap_xattr_fiemap()
4940 EXT4_I(inode)->i_extra_isize; in ext4_iomap_xattr_fiemap()
4942 length = EXT4_SB(inode->i_sb)->s_inode_size - offset; in ext4_iomap_xattr_fiemap()
4945 } else if (EXT4_I(inode)->i_file_acl) { /* external block */ in ext4_iomap_xattr_fiemap()
4946 physical = (__u64)EXT4_I(inode)->i_file_acl << blockbits; in ext4_iomap_xattr_fiemap()
4947 length = inode->i_sb->s_blocksize; in ext4_iomap_xattr_fiemap()
4950 /* no in-inode or external block for xattr, so return -ENOENT */ in ext4_iomap_xattr_fiemap()
4951 error = -ENOENT; in ext4_iomap_xattr_fiemap()
4955 iomap->addr = physical; in ext4_iomap_xattr_fiemap()
4956 iomap->offset = 0; in ext4_iomap_xattr_fiemap()
4957 iomap->length = length; in ext4_iomap_xattr_fiemap()
4958 iomap->type = iomap_type; in ext4_iomap_xattr_fiemap()
4959 iomap->flags = 0; in ext4_iomap_xattr_fiemap()
4971 if (error == 0 && (offset >= iomap->length)) in ext4_iomap_xattr_begin()
4972 error = -ENOENT; in ext4_iomap_xattr_begin()
4985 maxbytes = inode->i_sb->s_maxbytes; in ext4_fiemap_check_ranges()
4987 maxbytes = EXT4_SB(inode->i_sb)->s_bitmap_maxbytes; in ext4_fiemap_check_ranges()
4990 return -EINVAL; in ext4_fiemap_check_ranges()
4992 return -EFBIG; in ext4_fiemap_check_ranges()
4997 if (*len > maxbytes || (maxbytes - *len) < start) in ext4_fiemap_check_ranges()
4998 *len = maxbytes - start; in ext4_fiemap_check_ranges()
5007 if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { in ext4_fiemap()
5011 fieinfo->fi_flags &= ~FIEMAP_FLAG_CACHE; in ext4_fiemap()
5023 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { in ext4_fiemap()
5024 fieinfo->fi_flags &= ~FIEMAP_FLAG_XATTR; in ext4_fiemap()
5042 down_read(&EXT4_I(inode)->xattr_sem); in ext4_get_es_cache()
5044 up_read(&EXT4_I(inode)->xattr_sem); in ext4_get_es_cache()
5049 if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { in ext4_get_es_cache()
5053 fieinfo->fi_flags &= ~FIEMAP_FLAG_CACHE; in ext4_get_es_cache()
5064 start_blk = start >> inode->i_sb->s_blocksize_bits; in ext4_get_es_cache()
5065 last_blk = (start + len - 1) >> inode->i_sb->s_blocksize_bits; in ext4_get_es_cache()
5067 last_blk = EXT_MAX_BLOCKS-1; in ext4_get_es_cache()
5068 len_blks = ((ext4_lblk_t) last_blk) - start_blk + 1; in ext4_get_es_cache()
5079 * Shift the extents of a path structure lying between path[depth].p_ext
5080 * and EXT_LAST_EXTENT(path[depth].p_hdr), by @shift blocks. @SHIFT tells
5084 ext4_ext_shift_path_extents(struct ext4_ext_path *path, ext4_lblk_t shift, in ext4_ext_shift_path_extents() argument
5092 depth = path->p_depth; in ext4_ext_shift_path_extents()
5095 if (depth == path->p_depth) { in ext4_ext_shift_path_extents()
5096 ex_start = path[depth].p_ext; in ext4_ext_shift_path_extents()
5098 return -EFSCORRUPTED; in ext4_ext_shift_path_extents()
5100 ex_last = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_path_extents()
5103 if (ex_start == EXT_FIRST_EXTENT(path[depth].p_hdr)) { in ext4_ext_shift_path_extents()
5114 err = -EAGAIN; in ext4_ext_shift_path_extents()
5118 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5124 le32_add_cpu(&ex_start->ee_block, in ext4_ext_shift_path_extents()
5125 -shift); in ext4_ext_shift_path_extents()
5128 EXT_FIRST_EXTENT(path[depth].p_hdr)) in ext4_ext_shift_path_extents()
5131 path, ex_start - 1)) in ext4_ext_shift_path_extents()
5132 ex_last--; in ext4_ext_shift_path_extents()
5136 le32_add_cpu(&ex_last->ee_block, shift); in ext4_ext_shift_path_extents()
5137 ext4_ext_try_to_merge_right(inode, path, in ext4_ext_shift_path_extents()
5139 ex_last--; in ext4_ext_shift_path_extents()
5142 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5146 if (--depth < 0 || !update) in ext4_ext_shift_path_extents()
5151 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5156 le32_add_cpu(&path[depth].p_idx->ei_block, -shift); in ext4_ext_shift_path_extents()
5158 le32_add_cpu(&path[depth].p_idx->ei_block, shift); in ext4_ext_shift_path_extents()
5159 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5164 if (path[depth].p_idx != EXT_FIRST_INDEX(path[depth].p_hdr)) in ext4_ext_shift_path_extents()
5167 depth--; in ext4_ext_shift_path_extents()
5186 struct ext4_ext_path *path; in ext4_ext_shift_extents() local
5192 /* Let path point to the last extent */ in ext4_ext_shift_extents()
5193 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_shift_extents()
5195 if (IS_ERR(path)) in ext4_ext_shift_extents()
5196 return PTR_ERR(path); in ext4_ext_shift_extents()
5198 depth = path->p_depth; in ext4_ext_shift_extents()
5199 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5203 stop = le32_to_cpu(extent->ee_block); in ext4_ext_shift_extents()
5211 path = ext4_find_extent(inode, start - 1, &path, in ext4_ext_shift_extents()
5213 if (IS_ERR(path)) in ext4_ext_shift_extents()
5214 return PTR_ERR(path); in ext4_ext_shift_extents()
5215 depth = path->p_depth; in ext4_ext_shift_extents()
5216 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5218 ex_start = le32_to_cpu(extent->ee_block); in ext4_ext_shift_extents()
5219 ex_end = le32_to_cpu(extent->ee_block) + in ext4_ext_shift_extents()
5227 (shift > start - ex_end)) { in ext4_ext_shift_extents()
5228 ret = -EINVAL; in ext4_ext_shift_extents()
5232 if (shift > EXT_MAX_BLOCKS - in ext4_ext_shift_extents()
5234 ret = -EINVAL; in ext4_ext_shift_extents()
5260 path = ext4_find_extent(inode, *iterator, &path, in ext4_ext_shift_extents()
5262 if (IS_ERR(path)) in ext4_ext_shift_extents()
5263 return PTR_ERR(path); in ext4_ext_shift_extents()
5264 depth = path->p_depth; in ext4_ext_shift_extents()
5265 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5269 return -EFSCORRUPTED; in ext4_ext_shift_extents()
5272 le32_to_cpu(extent->ee_block)) { in ext4_ext_shift_extents()
5274 if (extent < EXT_LAST_EXTENT(path[depth].p_hdr)) { in ext4_ext_shift_extents()
5275 path[depth].p_ext++; in ext4_ext_shift_extents()
5277 *iterator = ext4_ext_next_allocated_block(path); in ext4_ext_shift_extents()
5284 extent = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5285 *iterator = le32_to_cpu(extent->ee_block) + in ext4_ext_shift_extents()
5288 extent = EXT_FIRST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5289 if (le32_to_cpu(extent->ee_block) > start) in ext4_ext_shift_extents()
5290 *iterator = le32_to_cpu(extent->ee_block) - 1; in ext4_ext_shift_extents()
5291 else if (le32_to_cpu(extent->ee_block) == start) in ext4_ext_shift_extents()
5294 extent = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5295 while (le32_to_cpu(extent->ee_block) >= start) in ext4_ext_shift_extents()
5296 extent--; in ext4_ext_shift_extents()
5298 if (extent == EXT_LAST_EXTENT(path[depth].p_hdr)) in ext4_ext_shift_extents()
5304 path[depth].p_ext = extent; in ext4_ext_shift_extents()
5306 ret = ext4_ext_shift_path_extents(path, shift, inode, in ext4_ext_shift_extents()
5309 if (ret == -EAGAIN) in ext4_ext_shift_extents()
5315 ext4_free_ext_path(path); in ext4_ext_shift_extents()
5322 * Returns: 0 and non-zero on error.
5327 struct super_block *sb = inode->i_sb; in ext4_collapse_range()
5328 struct address_space *mapping = inode->i_mapping; in ext4_collapse_range()
5341 return -EOPNOTSUPP; in ext4_collapse_range()
5345 return -EINVAL; in ext4_collapse_range()
5357 if (offset + len >= inode->i_size) { in ext4_collapse_range()
5358 ret = -EINVAL; in ext4_collapse_range()
5364 ret = -EOPNOTSUPP; in ext4_collapse_range()
5416 down_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5418 ext4_es_remove_extent(inode, punch_start, EXT_MAX_BLOCKS - punch_start); in ext4_collapse_range()
5420 ret = ext4_ext_remove_space(inode, punch_start, punch_stop - 1); in ext4_collapse_range()
5422 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5428 punch_stop - punch_start, SHIFT_LEFT); in ext4_collapse_range()
5430 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5434 new_size = inode->i_size - len; in ext4_collapse_range()
5436 EXT4_I(inode)->i_disksize = new_size; in ext4_collapse_range()
5438 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5465 struct super_block *sb = inode->i_sb; in ext4_insert_range()
5466 struct address_space *mapping = inode->i_mapping; in ext4_insert_range()
5468 struct ext4_ext_path *path; in ext4_insert_range() local
5481 return -EOPNOTSUPP; in ext4_insert_range()
5485 return -EINVAL; in ext4_insert_range()
5495 ret = -EOPNOTSUPP; in ext4_insert_range()
5500 if (len > inode->i_sb->s_maxbytes - inode->i_size) { in ext4_insert_range()
5501 ret = -EFBIG; in ext4_insert_range()
5506 if (offset >= inode->i_size) { in ext4_insert_range()
5507 ret = -EINVAL; in ext4_insert_range()
5534 ret = filemap_write_and_wait_range(inode->i_mapping, ioffset, in ext4_insert_range()
5549 inode->i_size += len; in ext4_insert_range()
5550 EXT4_I(inode)->i_disksize += len; in ext4_insert_range()
5556 down_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5559 path = ext4_find_extent(inode, offset_lblk, NULL, 0); in ext4_insert_range()
5560 if (IS_ERR(path)) { in ext4_insert_range()
5561 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5562 ret = PTR_ERR(path); in ext4_insert_range()
5567 extent = path[depth].p_ext; in ext4_insert_range()
5569 ee_start_lblk = le32_to_cpu(extent->ee_block); in ext4_insert_range()
5581 ret = ext4_split_extent_at(handle, inode, &path, in ext4_insert_range()
5588 ext4_free_ext_path(path); in ext4_insert_range()
5590 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5594 ext4_free_ext_path(path); in ext4_insert_range()
5597 ext4_es_remove_extent(inode, offset_lblk, EXT_MAX_BLOCKS - offset_lblk); in ext4_insert_range()
5606 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5622 * ext4_swap_extents() - Swap extents between two inodes
5633 * stuff such as page-cache locking consistency, bh mapping consistency or
5650 BUG_ON(!rwsem_is_locked(&EXT4_I(inode1)->i_data_sem)); in ext4_swap_extents()
5651 BUG_ON(!rwsem_is_locked(&EXT4_I(inode2)->i_data_sem)); in ext4_swap_extents()
5678 ex1 = path1[path1->p_depth].p_ext; in ext4_swap_extents()
5679 ex2 = path2[path2->p_depth].p_ext; in ext4_swap_extents()
5684 e1_blk = le32_to_cpu(ex1->ee_block); in ext4_swap_extents()
5685 e2_blk = le32_to_cpu(ex2->ee_block); in ext4_swap_extents()
5706 len = next1 - lblk1; in ext4_swap_extents()
5707 if (len < next2 - lblk2) in ext4_swap_extents()
5708 len = next2 - lblk2; in ext4_swap_extents()
5713 count -= len; in ext4_swap_extents()
5733 * path must to be revalidated. */ in ext4_swap_extents()
5739 if (len > e1_blk + e1_len - lblk1) in ext4_swap_extents()
5740 len = e1_blk + e1_len - lblk1; in ext4_swap_extents()
5741 if (len > e2_blk + e2_len - lblk2) in ext4_swap_extents()
5742 len = e2_blk + e2_len - lblk2; in ext4_swap_extents()
5759 * path must to be revalidated. */ in ext4_swap_extents()
5764 *erp = ext4_ext_get_access(handle, inode1, path1 + path1->p_depth); in ext4_swap_extents()
5767 *erp = ext4_ext_get_access(handle, inode2, path2 + path2->p_depth); in ext4_swap_extents()
5775 ex1->ee_len = cpu_to_le16(e2_len); in ext4_swap_extents()
5776 ex2->ee_len = cpu_to_le16(e1_len); in ext4_swap_extents()
5785 path2->p_depth); in ext4_swap_extents()
5789 path1->p_depth); in ext4_swap_extents()
5801 count -= len; in ext4_swap_extents()
5812 * ext4_clu_mapped - determine whether any block in a logical cluster has
5815 * @inode - file containing the logical cluster
5816 * @lclu - logical cluster of interest
5825 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_clu_mapped()
5826 struct ext4_ext_path *path; in ext4_clu_mapped() local
5833 * mapped - no physical clusters have been allocated, and the in ext4_clu_mapped()
5841 path = ext4_find_extent(inode, EXT4_C2B(sbi, lclu), NULL, 0); in ext4_clu_mapped()
5842 if (IS_ERR(path)) { in ext4_clu_mapped()
5843 err = PTR_ERR(path); in ext4_clu_mapped()
5844 path = NULL; in ext4_clu_mapped()
5855 if (unlikely(path[depth].p_ext == NULL && depth != 0)) { in ext4_clu_mapped()
5857 "bad extent address - lblock: %lu, depth: %d, pblock: %lld", in ext4_clu_mapped()
5859 depth, path[depth].p_block); in ext4_clu_mapped()
5860 err = -EFSCORRUPTED; in ext4_clu_mapped()
5864 extent = path[depth].p_ext; in ext4_clu_mapped()
5870 first_lblk = le32_to_cpu(extent->ee_block); in ext4_clu_mapped()
5874 * Three possible outcomes at this point - found extent spanning in ext4_clu_mapped()
5881 ext4_ext_get_actual_len(extent) - 1); in ext4_clu_mapped()
5885 first_lblk = ext4_ext_next_allocated_block(path); in ext4_clu_mapped()
5893 ext4_free_ext_path(path); in ext4_clu_mapped()
5903 * replay path. Returns 0 on success and error on failure.
5908 struct ext4_ext_path *path; in ext4_ext_replay_update_ex() local
5912 path = ext4_find_extent(inode, start, NULL, 0); in ext4_ext_replay_update_ex()
5913 if (IS_ERR(path)) in ext4_ext_replay_update_ex()
5914 return PTR_ERR(path); in ext4_ext_replay_update_ex()
5915 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5917 ret = -EFSCORRUPTED; in ext4_ext_replay_update_ex()
5921 if (le32_to_cpu(ex->ee_block) != start || in ext4_ext_replay_update_ex()
5924 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5925 ret = ext4_force_split_extent_at(NULL, inode, &path, start, 1); in ext4_ext_replay_update_ex()
5926 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5930 path = ext4_find_extent(inode, start, &path, 0); in ext4_ext_replay_update_ex()
5931 if (IS_ERR(path)) in ext4_ext_replay_update_ex()
5932 return PTR_ERR(path); in ext4_ext_replay_update_ex()
5933 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5934 WARN_ON(le32_to_cpu(ex->ee_block) != start); in ext4_ext_replay_update_ex()
5937 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5938 ret = ext4_force_split_extent_at(NULL, inode, &path, in ext4_ext_replay_update_ex()
5940 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5944 path = ext4_find_extent(inode, start, &path, 0); in ext4_ext_replay_update_ex()
5945 if (IS_ERR(path)) in ext4_ext_replay_update_ex()
5946 return PTR_ERR(path); in ext4_ext_replay_update_ex()
5947 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5955 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5956 ret = ext4_ext_dirty(NULL, inode, &path[path->p_depth]); in ext4_ext_replay_update_ex()
5957 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5959 ext4_free_ext_path(path); in ext4_ext_replay_update_ex()
5967 struct ext4_ext_path *path = NULL; in ext4_ext_replay_shrink_inode() local
5972 path = ext4_find_extent(inode, cur, NULL, 0); in ext4_ext_replay_shrink_inode()
5973 if (IS_ERR(path)) in ext4_ext_replay_shrink_inode()
5975 ex = path[path->p_depth].p_ext; in ext4_ext_replay_shrink_inode()
5977 ext4_free_ext_path(path); in ext4_ext_replay_shrink_inode()
5982 cur = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_replay_shrink_inode()
5985 ext4_ext_try_to_merge(NULL, inode, path, ex); in ext4_ext_replay_shrink_inode()
5986 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_shrink_inode()
5987 ext4_ext_dirty(NULL, inode, &path[path->p_depth]); in ext4_ext_replay_shrink_inode()
5988 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_shrink_inode()
5990 ext4_free_ext_path(path); in ext4_ext_replay_shrink_inode()
5998 struct ext4_map_blocks map; in skip_hole() local
6000 map.m_lblk = *cur; in skip_hole()
6001 map.m_len = ((inode->i_size) >> inode->i_sb->s_blocksize_bits) - *cur; in skip_hole()
6003 ret = ext4_map_blocks(NULL, inode, &map, 0); in skip_hole()
6008 *cur = *cur + map.m_len; in skip_hole()
6015 struct ext4_ext_path *path = NULL, *path2 = NULL; in ext4_ext_replay_set_iblocks() local
6020 struct ext4_map_blocks map; in ext4_ext_replay_set_iblocks() local
6023 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_replay_set_iblocks()
6025 if (IS_ERR(path)) in ext4_ext_replay_set_iblocks()
6026 return PTR_ERR(path); in ext4_ext_replay_set_iblocks()
6027 ex = path[path->p_depth].p_ext; in ext4_ext_replay_set_iblocks()
6029 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6032 end = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_replay_set_iblocks()
6033 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6038 map.m_lblk = cur; in ext4_ext_replay_set_iblocks()
6039 map.m_len = end - cur; in ext4_ext_replay_set_iblocks()
6040 ret = ext4_map_blocks(NULL, inode, &map, 0); in ext4_ext_replay_set_iblocks()
6045 cur = cur + map.m_len; in ext4_ext_replay_set_iblocks()
6051 * their paths. When path is different for 2 successive extents in ext4_ext_replay_set_iblocks()
6052 * we compare the blocks in the path at each level and increment in ext4_ext_replay_set_iblocks()
6059 path = ext4_find_extent(inode, cur, NULL, 0); in ext4_ext_replay_set_iblocks()
6060 if (IS_ERR(path)) in ext4_ext_replay_set_iblocks()
6062 numblks += path->p_depth; in ext4_ext_replay_set_iblocks()
6063 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6065 path = ext4_find_extent(inode, cur, NULL, 0); in ext4_ext_replay_set_iblocks()
6066 if (IS_ERR(path)) in ext4_ext_replay_set_iblocks()
6068 ex = path[path->p_depth].p_ext; in ext4_ext_replay_set_iblocks()
6070 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6073 cur = max(cur + 1, le32_to_cpu(ex->ee_block) + in ext4_ext_replay_set_iblocks()
6077 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6082 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6085 for (i = 0; i <= max(path->p_depth, path2->p_depth); i++) { in ext4_ext_replay_set_iblocks()
6087 if (i <= path->p_depth) in ext4_ext_replay_set_iblocks()
6088 cmp1 = path[i].p_bh ? in ext4_ext_replay_set_iblocks()
6089 path[i].p_bh->b_blocknr : 0; in ext4_ext_replay_set_iblocks()
6090 if (i <= path2->p_depth) in ext4_ext_replay_set_iblocks()
6092 path2[i].p_bh->b_blocknr : 0; in ext4_ext_replay_set_iblocks()
6096 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6101 inode->i_blocks = numblks << (inode->i_sb->s_blocksize_bits - 9); in ext4_ext_replay_set_iblocks()
6108 struct ext4_ext_path *path = NULL; in ext4_ext_clear_bb() local
6112 struct ext4_map_blocks map; in ext4_ext_clear_bb() local
6118 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_clear_bb()
6120 if (IS_ERR(path)) in ext4_ext_clear_bb()
6121 return PTR_ERR(path); in ext4_ext_clear_bb()
6122 ex = path[path->p_depth].p_ext; in ext4_ext_clear_bb()
6124 ext4_free_ext_path(path); in ext4_ext_clear_bb()
6127 end = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_clear_bb()
6128 ext4_free_ext_path(path); in ext4_ext_clear_bb()
6132 map.m_lblk = cur; in ext4_ext_clear_bb()
6133 map.m_len = end - cur; in ext4_ext_clear_bb()
6134 ret = ext4_map_blocks(NULL, inode, &map, 0); in ext4_ext_clear_bb()
6138 path = ext4_find_extent(inode, map.m_lblk, NULL, 0); in ext4_ext_clear_bb()
6139 if (!IS_ERR_OR_NULL(path)) { in ext4_ext_clear_bb()
6140 for (j = 0; j < path->p_depth; j++) { in ext4_ext_clear_bb()
6142 ext4_mb_mark_bb(inode->i_sb, in ext4_ext_clear_bb()
6143 path[j].p_block, 1, 0); in ext4_ext_clear_bb()
6144 ext4_fc_record_regions(inode->i_sb, inode->i_ino, in ext4_ext_clear_bb()
6145 0, path[j].p_block, 1, 1); in ext4_ext_clear_bb()
6147 ext4_free_ext_path(path); in ext4_ext_clear_bb()
6149 ext4_mb_mark_bb(inode->i_sb, map.m_pblk, map.m_len, 0); in ext4_ext_clear_bb()
6150 ext4_fc_record_regions(inode->i_sb, inode->i_ino, in ext4_ext_clear_bb()
6151 map.m_lblk, map.m_pblk, map.m_len, 1); in ext4_ext_clear_bb()
6153 cur = cur + map.m_len; in ext4_ext_clear_bb()