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()
2396 if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode) || in get_default_free_blocks_flags()
2405 * ext4_rereserve_cluster - increment the reserved cluster count when
2408 * @inode - file containing the cluster
2409 * @lblk - logical block in cluster to be reserved
2421 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_rereserve_cluster()
2426 spin_lock(&ei->i_block_reservation_lock); in ext4_rereserve_cluster()
2427 ei->i_reserved_data_blocks++; in ext4_rereserve_cluster()
2428 percpu_counter_add(&sbi->s_dirtyclusters_counter, 1); in ext4_rereserve_cluster()
2429 spin_unlock(&ei->i_block_reservation_lock); in ext4_rereserve_cluster()
2431 percpu_counter_add(&sbi->s_freeclusters_counter, 1); in ext4_rereserve_cluster()
2440 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_remove_blocks()
2447 if (from < le32_to_cpu(ex->ee_block) || in ext4_remove_blocks()
2448 to != le32_to_cpu(ex->ee_block) + ee_len - 1) { in ext4_remove_blocks()
2449 ext4_error(sbi->s_sb, in ext4_remove_blocks()
2450 "strange request: removal(2) %u-%u from %u:%u", in ext4_remove_blocks()
2451 from, to, le32_to_cpu(ex->ee_block), ee_len); in ext4_remove_blocks()
2456 spin_lock(&sbi->s_ext_stats_lock); in ext4_remove_blocks()
2457 sbi->s_ext_blocks += ee_len; in ext4_remove_blocks()
2458 sbi->s_ext_extents++; in ext4_remove_blocks()
2459 if (ee_len < sbi->s_ext_min) in ext4_remove_blocks()
2460 sbi->s_ext_min = ee_len; in ext4_remove_blocks()
2461 if (ee_len > sbi->s_ext_max) in ext4_remove_blocks()
2462 sbi->s_ext_max = ee_len; in ext4_remove_blocks()
2463 if (ext_depth(inode) > sbi->s_depth_max) in ext4_remove_blocks()
2464 sbi->s_depth_max = ext_depth(inode); in ext4_remove_blocks()
2465 spin_unlock(&sbi->s_ext_stats_lock); in ext4_remove_blocks()
2474 last_pblk = ext4_ext_pblock(ex) + ee_len - 1; in ext4_remove_blocks()
2476 if (partial->state != initial && in ext4_remove_blocks()
2477 partial->pclu != EXT4_B2C(sbi, last_pblk)) { in ext4_remove_blocks()
2478 if (partial->state == tofree) { in ext4_remove_blocks()
2480 if (ext4_is_pending(inode, partial->lblk)) in ext4_remove_blocks()
2483 EXT4_C2B(sbi, partial->pclu), in ext4_remove_blocks()
2484 sbi->s_cluster_ratio, flags); in ext4_remove_blocks()
2486 ext4_rereserve_cluster(inode, partial->lblk); in ext4_remove_blocks()
2488 partial->state = initial; in ext4_remove_blocks()
2491 num = le32_to_cpu(ex->ee_block) + ee_len - from; in ext4_remove_blocks()
2492 pblk = ext4_ext_pblock(ex) + ee_len - num; in ext4_remove_blocks()
2503 if ((EXT4_LBLK_COFF(sbi, to) != sbi->s_cluster_ratio - 1) && in ext4_remove_blocks()
2505 (partial->state != nofree)) { in ext4_remove_blocks()
2510 sbi->s_cluster_ratio, flags); in ext4_remove_blocks()
2513 partial->state = initial; in ext4_remove_blocks()
2529 if (partial->state != initial && partial->pclu != EXT4_B2C(sbi, pblk)) in ext4_remove_blocks()
2530 partial->state = initial; in ext4_remove_blocks()
2539 * cluster - we're either done freeing or the beginning of the in ext4_remove_blocks()
2543 if (partial->state == initial) { in ext4_remove_blocks()
2544 partial->pclu = EXT4_B2C(sbi, pblk); in ext4_remove_blocks()
2545 partial->lblk = from; in ext4_remove_blocks()
2546 partial->state = tofree; in ext4_remove_blocks()
2549 partial->state = initial; in ext4_remove_blocks()
2562 * @path: The path to the leaf
2572 struct ext4_ext_path *path, in ext4_ext_rm_leaf() argument
2576 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_rm_leaf()
2590 if (!path[depth].p_hdr) in ext4_ext_rm_leaf()
2591 path[depth].p_hdr = ext_block_hdr(path[depth].p_bh); in ext4_ext_rm_leaf()
2592 eh = path[depth].p_hdr; in ext4_ext_rm_leaf()
2593 if (unlikely(path[depth].p_hdr == NULL)) { in ext4_ext_rm_leaf()
2594 EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth); in ext4_ext_rm_leaf()
2595 return -EFSCORRUPTED; in ext4_ext_rm_leaf()
2598 ex = path[depth].p_ext; in ext4_ext_rm_leaf()
2602 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2617 path[depth].p_ext = ex; in ext4_ext_rm_leaf()
2620 b = min(ex_ee_block + ex_ee_len - 1, end); in ext4_ext_rm_leaf()
2633 if (sbi->s_cluster_ratio > 1) { in ext4_ext_rm_leaf()
2635 partial->pclu = EXT4_B2C(sbi, pblk); in ext4_ext_rm_leaf()
2636 partial->state = nofree; in ext4_ext_rm_leaf()
2638 ex--; in ext4_ext_rm_leaf()
2639 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2642 } else if (b != ex_ee_block + ex_ee_len - 1) { in ext4_ext_rm_leaf()
2647 ex_ee_block + ex_ee_len - 1); in ext4_ext_rm_leaf()
2648 err = -EFSCORRUPTED; in ext4_ext_rm_leaf()
2652 num = a - ex_ee_block; in ext4_ext_rm_leaf()
2663 credits = 7 + 2*(ex_ee_len/EXT4_BLOCKS_PER_GROUP(inode->i_sb)); in ext4_ext_rm_leaf()
2668 credits += EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb); in ext4_ext_rm_leaf()
2675 ext4_free_metadata_revoke_credits(inode->i_sb, in ext4_ext_rm_leaf()
2677 ext4_free_data_revoke_credits(inode, b - a + 1); in ext4_ext_rm_leaf()
2683 err = -EAGAIN; in ext4_ext_rm_leaf()
2687 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_rm_leaf()
2699 ex->ee_len = cpu_to_le16(num); in ext4_ext_rm_leaf()
2711 if (end != EXT_MAX_BLOCKS - 1) { in ext4_ext_rm_leaf()
2717 memmove(ex, ex+1, (EXT_LAST_EXTENT(eh) - ex) * in ext4_ext_rm_leaf()
2724 le16_add_cpu(&eh->eh_entries, -1); in ext4_ext_rm_leaf()
2727 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_rm_leaf()
2733 ex--; in ext4_ext_rm_leaf()
2734 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2738 if (correct_index && eh->eh_entries) in ext4_ext_rm_leaf()
2739 err = ext4_ext_correct_indexes(handle, inode, path); in ext4_ext_rm_leaf()
2748 if (partial->state == tofree && ex >= EXT_FIRST_EXTENT(eh)) { in ext4_ext_rm_leaf()
2749 pblk = ext4_ext_pblock(ex) + ex_ee_len - 1; in ext4_ext_rm_leaf()
2750 if (partial->pclu != EXT4_B2C(sbi, pblk)) { in ext4_ext_rm_leaf()
2753 if (ext4_is_pending(inode, partial->lblk)) in ext4_ext_rm_leaf()
2756 EXT4_C2B(sbi, partial->pclu), in ext4_ext_rm_leaf()
2757 sbi->s_cluster_ratio, flags); in ext4_ext_rm_leaf()
2759 ext4_rereserve_cluster(inode, partial->lblk); in ext4_ext_rm_leaf()
2761 partial->state = initial; in ext4_ext_rm_leaf()
2766 if (err == 0 && eh->eh_entries == 0 && path[depth].p_bh != NULL) in ext4_ext_rm_leaf()
2767 err = ext4_ext_rm_idx(handle, inode, path, depth); in ext4_ext_rm_leaf()
2778 ext4_ext_more_to_rm(struct ext4_ext_path *path) in ext4_ext_more_to_rm() argument
2780 BUG_ON(path->p_idx == NULL); in ext4_ext_more_to_rm()
2782 if (path->p_idx < EXT_FIRST_INDEX(path->p_hdr)) in ext4_ext_more_to_rm()
2789 if (le16_to_cpu(path->p_hdr->eh_entries) == path->p_block) in ext4_ext_more_to_rm()
2797 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_remove_space()
2799 struct ext4_ext_path *path = NULL; in ext4_ext_remove_space() local
2813 ext4_free_metadata_revoke_credits(inode->i_sb, depth)); in ext4_ext_remove_space()
2827 if (end < EXT_MAX_BLOCKS - 1) { in ext4_ext_remove_space()
2833 path = ext4_find_extent(inode, end, NULL, in ext4_ext_remove_space()
2835 if (IS_ERR(path)) { in ext4_ext_remove_space()
2837 return PTR_ERR(path); in ext4_ext_remove_space()
2841 ex = path[depth].p_ext; in ext4_ext_remove_space()
2845 "path[%d].p_hdr == NULL", in ext4_ext_remove_space()
2847 err = -EFSCORRUPTED; in ext4_ext_remove_space()
2852 ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_remove_space()
2853 ex_end = ee_block + ext4_ext_get_actual_len(ex) - 1; in ext4_ext_remove_space()
2868 if (sbi->s_cluster_ratio > 1) { in ext4_ext_remove_space()
2869 pblk = ext4_ext_pblock(ex) + end - ee_block + 1; in ext4_ext_remove_space()
2880 err = ext4_force_split_extent_at(handle, inode, &path, in ext4_ext_remove_space()
2885 } else if (sbi->s_cluster_ratio > 1 && end >= ex_end && in ext4_ext_remove_space()
2898 err = ext4_ext_search_right(inode, path, &lblk, &pblk, in ext4_ext_remove_space()
2910 * after i_size and walking into the tree depth-wise. in ext4_ext_remove_space()
2913 if (path) { in ext4_ext_remove_space()
2915 while (--k > 0) in ext4_ext_remove_space()
2916 path[k].p_block = in ext4_ext_remove_space()
2917 le16_to_cpu(path[k].p_hdr->eh_entries)+1; in ext4_ext_remove_space()
2919 path = kcalloc(depth + 1, sizeof(struct ext4_ext_path), in ext4_ext_remove_space()
2921 if (path == NULL) { in ext4_ext_remove_space()
2923 return -ENOMEM; in ext4_ext_remove_space()
2925 path[0].p_maxdepth = path[0].p_depth = depth; in ext4_ext_remove_space()
2926 path[0].p_hdr = ext_inode_hdr(inode); in ext4_ext_remove_space()
2929 if (ext4_ext_check(inode, path[0].p_hdr, depth, 0)) { in ext4_ext_remove_space()
2930 err = -EFSCORRUPTED; in ext4_ext_remove_space()
2939 err = ext4_ext_rm_leaf(handle, inode, path, in ext4_ext_remove_space()
2942 brelse(path[i].p_bh); in ext4_ext_remove_space()
2943 path[i].p_bh = NULL; in ext4_ext_remove_space()
2944 i--; in ext4_ext_remove_space()
2949 if (!path[i].p_hdr) { in ext4_ext_remove_space()
2951 path[i].p_hdr = ext_block_hdr(path[i].p_bh); in ext4_ext_remove_space()
2954 if (!path[i].p_idx) { in ext4_ext_remove_space()
2956 path[i].p_idx = EXT_LAST_INDEX(path[i].p_hdr); in ext4_ext_remove_space()
2957 path[i].p_block = le16_to_cpu(path[i].p_hdr->eh_entries)+1; in ext4_ext_remove_space()
2959 path[i].p_hdr, in ext4_ext_remove_space()
2960 le16_to_cpu(path[i].p_hdr->eh_entries)); in ext4_ext_remove_space()
2963 path[i].p_idx--; in ext4_ext_remove_space()
2966 ext_debug(inode, "level %d - index, first 0x%p, cur 0x%p\n", in ext4_ext_remove_space()
2967 i, EXT_FIRST_INDEX(path[i].p_hdr), in ext4_ext_remove_space()
2968 path[i].p_idx); in ext4_ext_remove_space()
2969 if (ext4_ext_more_to_rm(path + i)) { in ext4_ext_remove_space()
2973 i + 1, ext4_idx_pblock(path[i].p_idx)); in ext4_ext_remove_space()
2974 memset(path + i + 1, 0, sizeof(*path)); in ext4_ext_remove_space()
2975 bh = read_extent_tree_block(inode, path[i].p_idx, in ext4_ext_remove_space()
2976 depth - i - 1, in ext4_ext_remove_space()
2984 * Should be a no-op if we did IO above. */ in ext4_ext_remove_space()
2987 err = -EFSCORRUPTED; in ext4_ext_remove_space()
2990 path[i + 1].p_bh = bh; in ext4_ext_remove_space()
2994 path[i].p_block = le16_to_cpu(path[i].p_hdr->eh_entries); in ext4_ext_remove_space()
2998 if (path[i].p_hdr->eh_entries == 0 && i > 0) { in ext4_ext_remove_space()
3002 err = ext4_ext_rm_idx(handle, inode, path, i); in ext4_ext_remove_space()
3005 brelse(path[i].p_bh); in ext4_ext_remove_space()
3006 path[i].p_bh = NULL; in ext4_ext_remove_space()
3007 i--; in ext4_ext_remove_space()
3013 path->p_hdr->eh_entries); in ext4_ext_remove_space()
3026 sbi->s_cluster_ratio, flags); in ext4_ext_remove_space()
3033 if (path->p_hdr->eh_entries == 0) { in ext4_ext_remove_space()
3038 err = ext4_ext_get_access(handle, inode, path); in ext4_ext_remove_space()
3040 ext_inode_hdr(inode)->eh_depth = 0; in ext4_ext_remove_space()
3041 ext_inode_hdr(inode)->eh_max = in ext4_ext_remove_space()
3043 err = ext4_ext_dirty(handle, inode, path); in ext4_ext_remove_space()
3047 ext4_free_ext_path(path); in ext4_ext_remove_space()
3048 path = NULL; in ext4_ext_remove_space()
3049 if (err == -EAGAIN) in ext4_ext_remove_space()
3067 printk(KERN_INFO "EXT4-fs: file extents enabled" in ext4_ext_init()
3080 spin_lock_init(&EXT4_SB(sb)->s_ext_stats_lock); in ext4_ext_init()
3081 EXT4_SB(sb)->s_ext_min = 1 << 30; in ext4_ext_init()
3082 EXT4_SB(sb)->s_ext_max = 0; in ext4_ext_init()
3096 if (EXT4_SB(sb)->s_ext_blocks && EXT4_SB(sb)->s_ext_extents) { in ext4_ext_release()
3098 printk(KERN_ERR "EXT4-fs: %lu blocks in %lu extents (%lu ave)\n", in ext4_ext_release()
3099 sbi->s_ext_blocks, sbi->s_ext_extents, in ext4_ext_release()
3100 sbi->s_ext_blocks / sbi->s_ext_extents); in ext4_ext_release()
3101 printk(KERN_ERR "EXT4-fs: extents: %lu min, %lu max, max depth %lu\n", in ext4_ext_release()
3102 sbi->s_ext_min, sbi->s_ext_max, sbi->s_depth_max); in ext4_ext_release()
3113 ee_block = le32_to_cpu(ex->ee_block); in ext4_zeroout_es()
3124 /* FIXME!! we need to try to merge to left or right after zero-out */
3132 return ext4_issue_zeroout(inode, le32_to_cpu(ex->ee_block), ee_pblock, in ext4_ext_zeroout()
3141 * @path: the path to the extent
3164 struct ext4_ext_path *path = *ppath; in ext4_split_extent_at() local
3177 ext4_ext_show_leaf(inode, path); in ext4_split_extent_at()
3180 ex = path[depth].p_ext; in ext4_split_extent_at()
3181 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_extent_at()
3183 newblock = split - ee_block + ext4_ext_pblock(ex); in ext4_split_extent_at()
3191 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_split_extent_at()
3207 ext4_ext_try_to_merge(handle, inode, path, ex); in ext4_split_extent_at()
3209 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3215 ex->ee_len = cpu_to_le16(split - ee_block); in ext4_split_extent_at()
3220 * path may lead to new leaf, not to original leaf any more in ext4_split_extent_at()
3223 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_split_extent_at()
3228 ex2->ee_block = cpu_to_le32(split); in ext4_split_extent_at()
3229 ex2->ee_len = cpu_to_le16(ee_len - (split - ee_block)); in ext4_split_extent_at()
3235 if (err != -ENOSPC && err != -EDQUOT && err != -ENOMEM) in ext4_split_extent_at()
3239 * Update path is required because previous ext4_ext_insert_extent() in ext4_split_extent_at()
3240 * may have freed or reallocated the path. Using EXT4_EX_NOFAIL in ext4_split_extent_at()
3241 * guarantees that ext4_find_extent() will not return -ENOMEM, in ext4_split_extent_at()
3242 * otherwise -ENOMEM will cause a retry in do_writepages(), and a in ext4_split_extent_at()
3246 path = ext4_find_extent(inode, ee_block, ppath, in ext4_split_extent_at()
3248 if (IS_ERR(path)) { in ext4_split_extent_at()
3250 split, PTR_ERR(path)); in ext4_split_extent_at()
3251 return PTR_ERR(path); in ext4_split_extent_at()
3254 ex = path[depth].p_ext; in ext4_split_extent_at()
3260 zero_ex.ee_block = ex2->ee_block; in ext4_split_extent_at()
3267 zero_ex.ee_block = ex->ee_block; in ext4_split_extent_at()
3284 ex->ee_len = cpu_to_le16(ee_len); in ext4_split_extent_at()
3285 ext4_ext_try_to_merge(handle, inode, path, ex); in ext4_split_extent_at()
3286 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3300 ex->ee_len = orig_ex.ee_len; in ext4_split_extent_at()
3302 * Ignore ext4_ext_dirty return value since we are already in error path in ext4_split_extent_at()
3303 * and err is a non-zero error code. in ext4_split_extent_at()
3305 ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3314 * by @map as split_flags indicates
3326 struct ext4_map_blocks *map, in ext4_split_extent() argument
3330 struct ext4_ext_path *path = *ppath; in ext4_split_extent() local
3337 int allocated = map->m_len; in ext4_split_extent()
3340 ex = path[depth].p_ext; in ext4_split_extent()
3341 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_extent()
3345 if (map->m_lblk + map->m_len < ee_block + ee_len) { in ext4_split_extent()
3354 map->m_lblk + map->m_len, split_flag1, flags1); in ext4_split_extent()
3358 allocated = ee_len - (map->m_lblk - ee_block); in ext4_split_extent()
3361 * Update path is required because previous ext4_split_extent_at() may in ext4_split_extent()
3364 path = ext4_find_extent(inode, map->m_lblk, ppath, flags); in ext4_split_extent()
3365 if (IS_ERR(path)) in ext4_split_extent()
3366 return PTR_ERR(path); in ext4_split_extent()
3368 ex = path[depth].p_ext; in ext4_split_extent()
3371 (unsigned long) map->m_lblk); in ext4_split_extent()
3372 return -EFSCORRUPTED; in ext4_split_extent()
3376 if (map->m_lblk >= ee_block) { in ext4_split_extent()
3384 map->m_lblk, split_flag1, flags); in ext4_split_extent()
3389 ext4_ext_show_leaf(inode, path); in ext4_split_extent()
3397 * extent into multiple extents (up to three - one initialized and two
3404 * Pre-conditions:
3405 * - The extent pointed to by 'path' is unwritten.
3406 * - The extent pointed to by 'path' contains a superset
3407 * of the logical span [map->m_lblk, map->m_lblk + map->m_len).
3409 * Post-conditions on success:
3410 * - the returned value is the number of blocks beyond map->l_lblk
3412 * It is guaranteed to be >= map->m_len.
3416 struct ext4_map_blocks *map, in ext4_ext_convert_to_initialized() argument
3420 struct ext4_ext_path *path = *ppath; in ext4_ext_convert_to_initialized() local
3427 unsigned int ee_len, depth, map_len = map->m_len; in ext4_ext_convert_to_initialized()
3434 (unsigned long long)map->m_lblk, map_len); in ext4_ext_convert_to_initialized()
3436 sbi = EXT4_SB(inode->i_sb); in ext4_ext_convert_to_initialized()
3437 eof_block = (EXT4_I(inode)->i_disksize + inode->i_sb->s_blocksize - 1) in ext4_ext_convert_to_initialized()
3438 >> inode->i_sb->s_blocksize_bits; in ext4_ext_convert_to_initialized()
3439 if (eof_block < map->m_lblk + map_len) in ext4_ext_convert_to_initialized()
3440 eof_block = map->m_lblk + map_len; in ext4_ext_convert_to_initialized()
3443 eh = path[depth].p_hdr; in ext4_ext_convert_to_initialized()
3444 ex = path[depth].p_ext; in ext4_ext_convert_to_initialized()
3445 ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_convert_to_initialized()
3450 trace_ext4_ext_convert_to_initialized_enter(inode, map, ex); in ext4_ext_convert_to_initialized()
3452 /* Pre-conditions */ in ext4_ext_convert_to_initialized()
3454 BUG_ON(!in_range(map->m_lblk, ee_block, ee_len)); in ext4_ext_convert_to_initialized()
3465 * - L1: we do not deal with writes covering the whole extent. in ext4_ext_convert_to_initialized()
3468 * - L2: we only attempt to merge with an extent stored in the in ext4_ext_convert_to_initialized()
3471 if ((map->m_lblk == ee_block) && in ext4_ext_convert_to_initialized()
3479 abut_ex = ex - 1; in ext4_ext_convert_to_initialized()
3480 prev_lblk = le32_to_cpu(abut_ex->ee_block); in ext4_ext_convert_to_initialized()
3488 * - C1: abut_ex is initialized, in ext4_ext_convert_to_initialized()
3489 * - C2: abut_ex is logically abutting ex, in ext4_ext_convert_to_initialized()
3490 * - C3: abut_ex is physically abutting ex, in ext4_ext_convert_to_initialized()
3491 * - C4: abut_ex can receive the additional blocks without in ext4_ext_convert_to_initialized()
3497 (prev_len < (EXT_INIT_MAX_LEN - map_len))) { /*C4*/ in ext4_ext_convert_to_initialized()
3498 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3503 map, ex, abut_ex); in ext4_ext_convert_to_initialized()
3506 ex->ee_block = cpu_to_le32(ee_block + map_len); in ext4_ext_convert_to_initialized()
3508 ex->ee_len = cpu_to_le16(ee_len - map_len); in ext4_ext_convert_to_initialized()
3512 abut_ex->ee_len = cpu_to_le16(prev_len + map_len); in ext4_ext_convert_to_initialized()
3517 } else if (((map->m_lblk + map_len) == (ee_block + ee_len)) && in ext4_ext_convert_to_initialized()
3526 next_lblk = le32_to_cpu(abut_ex->ee_block); in ext4_ext_convert_to_initialized()
3534 * - C1: abut_ex is initialized, in ext4_ext_convert_to_initialized()
3535 * - C2: abut_ex is logically abutting ex, in ext4_ext_convert_to_initialized()
3536 * - C3: abut_ex is physically abutting ex, in ext4_ext_convert_to_initialized()
3537 * - C4: abut_ex can receive the additional blocks without in ext4_ext_convert_to_initialized()
3541 ((map->m_lblk + map_len) == next_lblk) && /*C2*/ in ext4_ext_convert_to_initialized()
3543 (next_len < (EXT_INIT_MAX_LEN - map_len))) { /*C4*/ in ext4_ext_convert_to_initialized()
3544 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3549 map, ex, abut_ex); in ext4_ext_convert_to_initialized()
3552 abut_ex->ee_block = cpu_to_le32(next_lblk - map_len); in ext4_ext_convert_to_initialized()
3553 ext4_ext_store_pblock(abut_ex, next_pblk - map_len); in ext4_ext_convert_to_initialized()
3554 ex->ee_len = cpu_to_le16(ee_len - map_len); in ext4_ext_convert_to_initialized()
3558 abut_ex->ee_len = cpu_to_le16(next_len + map_len); in ext4_ext_convert_to_initialized()
3566 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3568 /* Update path to point to the right extent */ in ext4_ext_convert_to_initialized()
3569 path[depth].p_ext = abut_ex; in ext4_ext_convert_to_initialized()
3572 allocated = ee_len - (map->m_lblk - ee_block); in ext4_ext_convert_to_initialized()
3574 WARN_ON(map->m_lblk < ee_block); in ext4_ext_convert_to_initialized()
3582 max_zeroout = sbi->s_extent_max_zeroout_kb >> in ext4_ext_convert_to_initialized()
3583 (inode->i_sb->s_blocksize_bits - 10); in ext4_ext_convert_to_initialized()
3596 split_map.m_lblk = map->m_lblk; in ext4_ext_convert_to_initialized()
3597 split_map.m_len = map->m_len; in ext4_ext_convert_to_initialized()
3606 cpu_to_le16(allocated - split_map.m_len); in ext4_ext_convert_to_initialized()
3609 split_map.m_len - ee_block); in ext4_ext_convert_to_initialized()
3615 if (split_map.m_lblk - ee_block + split_map.m_len < in ext4_ext_convert_to_initialized()
3619 zero_ex2.ee_block = ex->ee_block; in ext4_ext_convert_to_initialized()
3620 zero_ex2.ee_len = cpu_to_le16(split_map.m_lblk - in ext4_ext_convert_to_initialized()
3629 split_map.m_len += split_map.m_lblk - ee_block; in ext4_ext_convert_to_initialized()
3631 allocated = map->m_len; in ext4_ext_convert_to_initialized()
3661 * This works the same way in the case of initialized -> unwritten conversion.
3675 struct ext4_map_blocks *map, in ext4_split_convert_extents() argument
3679 struct ext4_ext_path *path = *ppath; in ext4_split_convert_extents() local
3687 (unsigned long long)map->m_lblk, map->m_len); in ext4_split_convert_extents()
3689 eof_block = (EXT4_I(inode)->i_disksize + inode->i_sb->s_blocksize - 1) in ext4_split_convert_extents()
3690 >> inode->i_sb->s_blocksize_bits; in ext4_split_convert_extents()
3691 if (eof_block < map->m_lblk + map->m_len) in ext4_split_convert_extents()
3692 eof_block = map->m_lblk + map->m_len; in ext4_split_convert_extents()
3698 ex = path[depth].p_ext; in ext4_split_convert_extents()
3699 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_convert_extents()
3712 return ext4_split_extent(handle, inode, ppath, map, split_flag, flags); in ext4_split_convert_extents()
3717 struct ext4_map_blocks *map, in ext4_convert_unwritten_extents_endio() argument
3720 struct ext4_ext_path *path = *ppath; in ext4_convert_unwritten_extents_endio() local
3728 ex = path[depth].p_ext; in ext4_convert_unwritten_extents_endio()
3729 ee_block = le32_to_cpu(ex->ee_block); in ext4_convert_unwritten_extents_endio()
3741 if (ee_block != map->m_lblk || ee_len > map->m_len) { in ext4_convert_unwritten_extents_endio()
3743 ext4_warning(inode->i_sb, "Inode (%ld) finished: extent logical block %llu," in ext4_convert_unwritten_extents_endio()
3745 inode->i_ino, (unsigned long long)ee_block, ee_len, in ext4_convert_unwritten_extents_endio()
3746 (unsigned long long)map->m_lblk, map->m_len); in ext4_convert_unwritten_extents_endio()
3748 err = ext4_split_convert_extents(handle, inode, map, ppath, in ext4_convert_unwritten_extents_endio()
3752 path = ext4_find_extent(inode, map->m_lblk, ppath, 0); in ext4_convert_unwritten_extents_endio()
3753 if (IS_ERR(path)) in ext4_convert_unwritten_extents_endio()
3754 return PTR_ERR(path); in ext4_convert_unwritten_extents_endio()
3756 ex = path[depth].p_ext; in ext4_convert_unwritten_extents_endio()
3759 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_convert_unwritten_extents_endio()
3768 ext4_ext_try_to_merge(handle, inode, path, ex); in ext4_convert_unwritten_extents_endio()
3771 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_convert_unwritten_extents_endio()
3773 ext4_ext_show_leaf(inode, path); in ext4_convert_unwritten_extents_endio()
3779 struct ext4_map_blocks *map, in convert_initialized_extent() argument
3783 struct ext4_ext_path *path = *ppath; in convert_initialized_extent() local
3794 if (map->m_len > EXT_UNWRITTEN_MAX_LEN) in convert_initialized_extent()
3795 map->m_len = EXT_UNWRITTEN_MAX_LEN / 2; in convert_initialized_extent()
3798 ex = path[depth].p_ext; in convert_initialized_extent()
3799 ee_block = le32_to_cpu(ex->ee_block); in convert_initialized_extent()
3805 if (ee_block != map->m_lblk || ee_len > map->m_len) { in convert_initialized_extent()
3806 err = ext4_split_convert_extents(handle, inode, map, ppath, in convert_initialized_extent()
3810 path = ext4_find_extent(inode, map->m_lblk, ppath, 0); in convert_initialized_extent()
3811 if (IS_ERR(path)) in convert_initialized_extent()
3812 return PTR_ERR(path); in convert_initialized_extent()
3814 ex = path[depth].p_ext; in convert_initialized_extent()
3817 (unsigned long) map->m_lblk); in convert_initialized_extent()
3818 return -EFSCORRUPTED; in convert_initialized_extent()
3822 err = ext4_ext_get_access(handle, inode, path + depth); in convert_initialized_extent()
3831 ext4_ext_try_to_merge(handle, inode, path, ex); in convert_initialized_extent()
3834 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in convert_initialized_extent()
3837 ext4_ext_show_leaf(inode, path); in convert_initialized_extent()
3841 map->m_flags |= EXT4_MAP_UNWRITTEN; in convert_initialized_extent()
3842 if (*allocated > map->m_len) in convert_initialized_extent()
3843 *allocated = map->m_len; in convert_initialized_extent()
3844 map->m_len = *allocated; in convert_initialized_extent()
3850 struct ext4_map_blocks *map, in ext4_ext_handle_unwritten_extents() argument
3854 struct ext4_ext_path __maybe_unused *path = *ppath; in ext4_ext_handle_unwritten_extents() local
3859 (unsigned long long)map->m_lblk, map->m_len, flags, in ext4_ext_handle_unwritten_extents()
3861 ext4_ext_show_leaf(inode, path); in ext4_ext_handle_unwritten_extents()
3869 trace_ext4_ext_handle_unwritten_extents(inode, map, flags, in ext4_ext_handle_unwritten_extents()
3874 ret = ext4_split_convert_extents(handle, inode, map, ppath, in ext4_ext_handle_unwritten_extents()
3887 map->m_len); in ext4_ext_handle_unwritten_extents()
3888 err = -EFSCORRUPTED; in ext4_ext_handle_unwritten_extents()
3891 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3896 err = ext4_convert_unwritten_extents_endio(handle, inode, map, in ext4_ext_handle_unwritten_extents()
3909 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3922 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3931 ret = ext4_ext_convert_to_initialized(handle, inode, map, ppath, flags); in ext4_ext_handle_unwritten_extents()
3943 map->m_len); in ext4_ext_handle_unwritten_extents()
3944 err = -EFSCORRUPTED; in ext4_ext_handle_unwritten_extents()
3950 map->m_flags |= EXT4_MAP_NEW; in ext4_ext_handle_unwritten_extents()
3952 map->m_flags |= EXT4_MAP_MAPPED; in ext4_ext_handle_unwritten_extents()
3954 map->m_pblk = newblock; in ext4_ext_handle_unwritten_extents()
3955 if (allocated > map->m_len) in ext4_ext_handle_unwritten_extents()
3956 allocated = map->m_len; in ext4_ext_handle_unwritten_extents()
3957 map->m_len = allocated; in ext4_ext_handle_unwritten_extents()
3958 ext4_ext_show_leaf(inode, path); in ext4_ext_handle_unwritten_extents()
3964 * get_implied_cluster_alloc - check to see if the requested
3965 * allocation (in the map structure) overlaps with a cluster already
3968 * @map The requested lblk->pblk mapping
3978 * |--- cluster # N--|
3979 * |--- extent ---| |---- requested region ---|
3984 * |--------- cluster # N ----------------|
3985 * |--- requested region --| |------- extent ----|
3990 * |------------- cluster # N-------------|
3991 * |----- ex -----| |---- ex_right ----|
3992 * |------ requested region ------|
3995 * In each of the above cases, we need to set the map->m_pblk and
3996 * map->m_len so it corresponds to the return the extent labelled as
3998 * cluster EXT4_B2C(sbi, map->m_lblk). We will then return 1 to
3999 * signal to ext4_ext_map_blocks() that map->m_pblk should be treated
4005 struct ext4_map_blocks *map, in get_implied_cluster_alloc() argument
4007 struct ext4_ext_path *path) in get_implied_cluster_alloc() argument
4010 ext4_lblk_t c_offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in get_implied_cluster_alloc()
4013 ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block); in get_implied_cluster_alloc()
4019 ex_cluster_end = EXT4_B2C(sbi, ee_block + ee_len - 1); in get_implied_cluster_alloc()
4022 rr_cluster_start = EXT4_B2C(sbi, map->m_lblk); in get_implied_cluster_alloc()
4027 ee_start += ee_len - 1; in get_implied_cluster_alloc()
4028 map->m_pblk = EXT4_PBLK_CMASK(sbi, ee_start) + c_offset; in get_implied_cluster_alloc()
4029 map->m_len = min(map->m_len, in get_implied_cluster_alloc()
4030 (unsigned) sbi->s_cluster_ratio - c_offset); in get_implied_cluster_alloc()
4034 * |--------- cluster # N-------------| in get_implied_cluster_alloc()
4035 * |------- extent ----| in get_implied_cluster_alloc()
4036 * |--- requested region ---| in get_implied_cluster_alloc()
4040 if (map->m_lblk < ee_block) in get_implied_cluster_alloc()
4041 map->m_len = min(map->m_len, ee_block - map->m_lblk); in get_implied_cluster_alloc()
4047 * |------------- cluster # N-------------| in get_implied_cluster_alloc()
4048 * |----- ex -----| |---- ex_right ----| in get_implied_cluster_alloc()
4049 * |------ requested region ------| in get_implied_cluster_alloc()
4052 if (map->m_lblk > ee_block) { in get_implied_cluster_alloc()
4053 ext4_lblk_t next = ext4_ext_next_allocated_block(path); in get_implied_cluster_alloc()
4054 map->m_len = min(map->m_len, next - map->m_lblk); in get_implied_cluster_alloc()
4057 trace_ext4_get_implied_cluster_alloc_exit(sb, map, 1); in get_implied_cluster_alloc()
4061 trace_ext4_get_implied_cluster_alloc_exit(sb, map, 0); in get_implied_cluster_alloc()
4067 * locate and expand the hole from the given @path, and then adjust it
4073 struct ext4_ext_path *path, in ext4_ext_determine_insert_hole() argument
4080 len = ext4_ext_find_hole(inode, path, &hole_start); in ext4_ext_determine_insert_hole()
4083 hole_start + len - 1, &es); in ext4_ext_determine_insert_hole()
4096 len -= lblk - hole_start; in ext4_ext_determine_insert_hole()
4106 len = es.es_lblk + es.es_len - lblk; in ext4_ext_determine_insert_hole()
4114 len = min(es.es_lblk - hole_start, len); in ext4_ext_determine_insert_hole()
4119 ext_debug(inode, " -> %u:%u\n", hole_start, len); in ext4_ext_determine_insert_hole()
4124 len -= lblk - hole_start; in ext4_ext_determine_insert_hole()
4130 * Block allocation/map/preallocation routine for extents based files
4134 * down_read(&EXT4_I(inode)->i_data_sem) if not allocating file system block
4135 * (ie, create is zero). Otherwise down_write(&EXT4_I(inode)->i_data_sem)
4138 * if create == 0 and these are pre-allocated blocks
4148 struct ext4_map_blocks *map, int flags) in ext4_ext_map_blocks() argument
4150 struct ext4_ext_path *path = NULL; in ext4_ext_map_blocks() local
4152 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_map_blocks()
4160 ext_debug(inode, "blocks %u/%u requested\n", map->m_lblk, map->m_len); in ext4_ext_map_blocks()
4161 trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags); in ext4_ext_map_blocks()
4164 path = ext4_find_extent(inode, map->m_lblk, NULL, 0); in ext4_ext_map_blocks()
4165 if (IS_ERR(path)) { in ext4_ext_map_blocks()
4166 err = PTR_ERR(path); in ext4_ext_map_blocks()
4167 path = NULL; in ext4_ext_map_blocks()
4178 if (unlikely(path[depth].p_ext == NULL && depth != 0)) { in ext4_ext_map_blocks()
4181 (unsigned long) map->m_lblk, depth, in ext4_ext_map_blocks()
4182 path[depth].p_block); in ext4_ext_map_blocks()
4183 err = -EFSCORRUPTED; in ext4_ext_map_blocks()
4187 ex = path[depth].p_ext; in ext4_ext_map_blocks()
4189 ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_map_blocks()
4203 if (in_range(map->m_lblk, ee_block, ee_len)) { in ext4_ext_map_blocks()
4204 newblock = map->m_lblk - ee_block + ee_start; in ext4_ext_map_blocks()
4206 allocated = ee_len - (map->m_lblk - ee_block); in ext4_ext_map_blocks()
4207 ext_debug(inode, "%u fit into %u:%d -> %llu\n", in ext4_ext_map_blocks()
4208 map->m_lblk, ee_block, ee_len, newblock); in ext4_ext_map_blocks()
4217 inode, map, &path, &allocated); in ext4_ext_map_blocks()
4220 map->m_flags |= EXT4_MAP_MAPPED; in ext4_ext_map_blocks()
4221 map->m_pblk = newblock; in ext4_ext_map_blocks()
4222 if (allocated > map->m_len) in ext4_ext_map_blocks()
4223 allocated = map->m_len; in ext4_ext_map_blocks()
4224 map->m_len = allocated; in ext4_ext_map_blocks()
4225 ext4_ext_show_leaf(inode, path); in ext4_ext_map_blocks()
4230 handle, inode, map, &path, flags, in ext4_ext_map_blocks()
4247 len = ext4_ext_determine_insert_hole(inode, path, map->m_lblk); in ext4_ext_map_blocks()
4249 map->m_pblk = 0; in ext4_ext_map_blocks()
4250 map->m_len = min_t(unsigned int, map->m_len, len); in ext4_ext_map_blocks()
4257 newex.ee_block = cpu_to_le32(map->m_lblk); in ext4_ext_map_blocks()
4258 cluster_offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in ext4_ext_map_blocks()
4265 get_implied_cluster_alloc(inode->i_sb, map, ex, path)) { in ext4_ext_map_blocks()
4266 ar.len = allocated = map->m_len; in ext4_ext_map_blocks()
4267 newblock = map->m_pblk; in ext4_ext_map_blocks()
4272 ar.lleft = map->m_lblk; in ext4_ext_map_blocks()
4273 err = ext4_ext_search_left(inode, path, &ar.lleft, &ar.pleft); in ext4_ext_map_blocks()
4276 ar.lright = map->m_lblk; in ext4_ext_map_blocks()
4277 err = ext4_ext_search_right(inode, path, &ar.lright, &ar.pright, &ex2); in ext4_ext_map_blocks()
4283 if ((sbi->s_cluster_ratio > 1) && err && in ext4_ext_map_blocks()
4284 get_implied_cluster_alloc(inode->i_sb, map, &ex2, path)) { in ext4_ext_map_blocks()
4285 ar.len = allocated = map->m_len; in ext4_ext_map_blocks()
4286 newblock = map->m_pblk; in ext4_ext_map_blocks()
4296 if (map->m_len > EXT_INIT_MAX_LEN && in ext4_ext_map_blocks()
4298 map->m_len = EXT_INIT_MAX_LEN; in ext4_ext_map_blocks()
4299 else if (map->m_len > EXT_UNWRITTEN_MAX_LEN && in ext4_ext_map_blocks()
4301 map->m_len = EXT_UNWRITTEN_MAX_LEN; in ext4_ext_map_blocks()
4304 newex.ee_len = cpu_to_le16(map->m_len); in ext4_ext_map_blocks()
4305 err = ext4_ext_check_overlap(sbi, inode, &newex, path); in ext4_ext_map_blocks()
4309 allocated = map->m_len; in ext4_ext_map_blocks()
4313 ar.goal = ext4_ext_find_goal(inode, path, map->m_lblk); in ext4_ext_map_blocks()
4314 ar.logical = map->m_lblk; in ext4_ext_map_blocks()
4323 offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in ext4_ext_map_blocks()
4325 ar.goal -= offset; in ext4_ext_map_blocks()
4326 ar.logical -= offset; in ext4_ext_map_blocks()
4327 if (S_ISREG(inode->i_mode)) in ext4_ext_map_blocks()
4330 /* disable in-core preallocation for non-regular files */ in ext4_ext_map_blocks()
4342 ar.len = EXT4_C2B(sbi, ar.len) - offset; in ext4_ext_map_blocks()
4356 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_map_blocks()
4359 err = ext4_ext_insert_extent(handle, inode, &path, &newex, flags); in ext4_ext_map_blocks()
4385 if (test_opt(inode->i_sb, DELALLOC) && allocated_clusters) { in ext4_ext_map_blocks()
4398 * When allocating non-delayed allocated clusters in ext4_ext_map_blocks()
4408 lblk = EXT4_LBLK_CMASK(sbi, map->m_lblk); in ext4_ext_map_blocks()
4409 len = allocated_clusters << sbi->s_cluster_bits; in ext4_ext_map_blocks()
4425 map->m_flags |= (EXT4_MAP_NEW | EXT4_MAP_MAPPED); in ext4_ext_map_blocks()
4426 map->m_pblk = pblk; in ext4_ext_map_blocks()
4427 map->m_len = ar.len; in ext4_ext_map_blocks()
4428 allocated = map->m_len; in ext4_ext_map_blocks()
4429 ext4_ext_show_leaf(inode, path); in ext4_ext_map_blocks()
4431 ext4_free_ext_path(path); in ext4_ext_map_blocks()
4433 trace_ext4_ext_map_blocks_exit(inode, flags, map, in ext4_ext_map_blocks()
4440 struct super_block *sb = inode->i_sb; in ext4_ext_truncate()
4451 EXT4_I(inode)->i_disksize = inode->i_size; in ext4_ext_truncate()
4456 last_block = (inode->i_size + sb->s_blocksize - 1) in ext4_ext_truncate()
4458 ext4_es_remove_extent(inode, last_block, EXT_MAX_BLOCKS - last_block); in ext4_ext_truncate()
4461 err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1); in ext4_ext_truncate()
4462 if (err == -ENOMEM) { in ext4_ext_truncate()
4478 struct ext4_map_blocks map; in ext4_alloc_file_blocks() local
4483 map.m_lblk = offset; in ext4_alloc_file_blocks()
4484 map.m_len = len; in ext4_alloc_file_blocks()
4515 ret = ext4_map_blocks(handle, inode, &map, flags); in ext4_alloc_file_blocks()
4519 inode->i_ino, map.m_lblk, in ext4_alloc_file_blocks()
4520 map.m_len, ret); in ext4_alloc_file_blocks()
4529 map.m_lblk += ret; in ext4_alloc_file_blocks()
4530 map.m_len = len = len - ret; in ext4_alloc_file_blocks()
4531 epos = (loff_t)map.m_lblk << inode->i_blkbits; in ext4_alloc_file_blocks()
4542 old_size, epos - old_size); in ext4_alloc_file_blocks()
4552 if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) in ext4_alloc_file_blocks()
4566 struct address_space *mapping = file->f_mapping; in ext4_zero_range()
4576 unsigned int blkbits = inode->i_blkbits; in ext4_zero_range()
4591 return -EINVAL; in ext4_zero_range()
4592 partial_begin = offset & ((1 << blkbits) - 1); in ext4_zero_range()
4593 partial_end = (offset + len) & ((1 << blkbits) - 1); in ext4_zero_range()
4600 max_blocks -= lblk; in ext4_zero_range()
4608 ret = -EOPNOTSUPP; in ext4_zero_range()
4613 (offset + len > inode->i_size || in ext4_zero_range()
4614 offset + len > EXT4_I(inode)->i_disksize)) { in ext4_zero_range()
4634 (round_up((offset + len), 1 << blkbits) - in ext4_zero_range()
4693 ext4_std_error(inode->i_sb, ret); in ext4_zero_range()
4708 if (file->f_flags & O_SYNC) in ext4_zero_range()
4721 * For block-mapped files, posix_fallocate should fall back to the method
4733 unsigned int blkbits = inode->i_blkbits; in ext4_fallocate()
4737 * range since we would need to re-encrypt blocks with a in ext4_fallocate()
4743 return -EOPNOTSUPP; in ext4_fallocate()
4749 return -EOPNOTSUPP; in ext4_fallocate()
4785 * We only support preallocation for extent-based files only in ext4_fallocate()
4788 ret = -EOPNOTSUPP; in ext4_fallocate()
4793 (offset + len > inode->i_size || in ext4_fallocate()
4794 offset + len > EXT4_I(inode)->i_disksize)) { in ext4_fallocate()
4812 if (file->f_flags & O_SYNC && EXT4_SB(inode->i_sb)->s_journal) { in ext4_fallocate()
4813 ret = ext4_fc_commit(EXT4_SB(inode->i_sb)->s_journal, in ext4_fallocate()
4814 EXT4_I(inode)->i_sync_tid); in ext4_fallocate()
4838 struct ext4_map_blocks map; in ext4_convert_unwritten_extents() local
4839 unsigned int blkbits = inode->i_blkbits; in ext4_convert_unwritten_extents()
4842 map.m_lblk = offset >> blkbits; in ext4_convert_unwritten_extents()
4852 map.m_lblk += ret; in ext4_convert_unwritten_extents()
4853 map.m_len = (max_blocks -= ret); in ext4_convert_unwritten_extents()
4862 ret = ext4_map_blocks(handle, inode, &map, in ext4_convert_unwritten_extents()
4865 ext4_warning(inode->i_sb, in ext4_convert_unwritten_extents()
4868 inode->i_ino, map.m_lblk, in ext4_convert_unwritten_extents()
4869 map.m_len, ret); in ext4_convert_unwritten_extents()
4900 list_for_each_entry(io_end_vec, &io_end->list_vec, list) { in ext4_convert_unwritten_io_end_vec()
4901 ret = ext4_convert_unwritten_extents(handle, io_end->inode, in ext4_convert_unwritten_io_end_vec()
4902 io_end_vec->offset, in ext4_convert_unwritten_io_end_vec()
4903 io_end_vec->size); in ext4_convert_unwritten_io_end_vec()
4918 int blockbits = inode->i_sb->s_blocksize_bits; in ext4_iomap_xattr_fiemap()
4922 /* in-inode? */ in ext4_iomap_xattr_fiemap()
4930 physical = (__u64)iloc.bh->b_blocknr << blockbits; in ext4_iomap_xattr_fiemap()
4932 EXT4_I(inode)->i_extra_isize; in ext4_iomap_xattr_fiemap()
4934 length = EXT4_SB(inode->i_sb)->s_inode_size - offset; in ext4_iomap_xattr_fiemap()
4937 } else if (EXT4_I(inode)->i_file_acl) { /* external block */ in ext4_iomap_xattr_fiemap()
4938 physical = (__u64)EXT4_I(inode)->i_file_acl << blockbits; in ext4_iomap_xattr_fiemap()
4939 length = inode->i_sb->s_blocksize; in ext4_iomap_xattr_fiemap()
4942 /* no in-inode or external block for xattr, so return -ENOENT */ in ext4_iomap_xattr_fiemap()
4943 error = -ENOENT; in ext4_iomap_xattr_fiemap()
4947 iomap->addr = physical; in ext4_iomap_xattr_fiemap()
4948 iomap->offset = 0; in ext4_iomap_xattr_fiemap()
4949 iomap->length = length; in ext4_iomap_xattr_fiemap()
4950 iomap->type = iomap_type; in ext4_iomap_xattr_fiemap()
4951 iomap->flags = 0; in ext4_iomap_xattr_fiemap()
4963 if (error == 0 && (offset >= iomap->length)) in ext4_iomap_xattr_begin()
4964 error = -ENOENT; in ext4_iomap_xattr_begin()
4977 return -EINVAL; in ext4_fiemap_check_ranges()
4979 return -EFBIG; in ext4_fiemap_check_ranges()
4984 if (*len > maxbytes || (maxbytes - *len) < start) in ext4_fiemap_check_ranges()
4985 *len = maxbytes - start; in ext4_fiemap_check_ranges()
4994 if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { in ext4_fiemap()
4998 fieinfo->fi_flags &= ~FIEMAP_FLAG_CACHE; in ext4_fiemap()
5010 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { in ext4_fiemap()
5011 fieinfo->fi_flags &= ~FIEMAP_FLAG_XATTR; in ext4_fiemap()
5029 down_read(&EXT4_I(inode)->xattr_sem); in ext4_get_es_cache()
5031 up_read(&EXT4_I(inode)->xattr_sem); in ext4_get_es_cache()
5036 if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { in ext4_get_es_cache()
5040 fieinfo->fi_flags &= ~FIEMAP_FLAG_CACHE; in ext4_get_es_cache()
5051 start_blk = start >> inode->i_sb->s_blocksize_bits; in ext4_get_es_cache()
5052 last_blk = (start + len - 1) >> inode->i_sb->s_blocksize_bits; in ext4_get_es_cache()
5054 last_blk = EXT_MAX_BLOCKS-1; in ext4_get_es_cache()
5055 len_blks = ((ext4_lblk_t) last_blk) - start_blk + 1; in ext4_get_es_cache()
5066 * Shift the extents of a path structure lying between path[depth].p_ext
5067 * and EXT_LAST_EXTENT(path[depth].p_hdr), by @shift blocks. @SHIFT tells
5071 ext4_ext_shift_path_extents(struct ext4_ext_path *path, ext4_lblk_t shift, in ext4_ext_shift_path_extents() argument
5079 depth = path->p_depth; in ext4_ext_shift_path_extents()
5082 if (depth == path->p_depth) { in ext4_ext_shift_path_extents()
5083 ex_start = path[depth].p_ext; in ext4_ext_shift_path_extents()
5085 return -EFSCORRUPTED; in ext4_ext_shift_path_extents()
5087 ex_last = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_path_extents()
5090 if (ex_start == EXT_FIRST_EXTENT(path[depth].p_hdr)) { in ext4_ext_shift_path_extents()
5101 err = -EAGAIN; in ext4_ext_shift_path_extents()
5105 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5111 le32_add_cpu(&ex_start->ee_block, in ext4_ext_shift_path_extents()
5112 -shift); in ext4_ext_shift_path_extents()
5115 EXT_FIRST_EXTENT(path[depth].p_hdr)) in ext4_ext_shift_path_extents()
5118 path, ex_start - 1)) in ext4_ext_shift_path_extents()
5119 ex_last--; in ext4_ext_shift_path_extents()
5123 le32_add_cpu(&ex_last->ee_block, shift); in ext4_ext_shift_path_extents()
5124 ext4_ext_try_to_merge_right(inode, path, in ext4_ext_shift_path_extents()
5126 ex_last--; in ext4_ext_shift_path_extents()
5129 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5133 if (--depth < 0 || !update) in ext4_ext_shift_path_extents()
5138 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5143 le32_add_cpu(&path[depth].p_idx->ei_block, -shift); in ext4_ext_shift_path_extents()
5145 le32_add_cpu(&path[depth].p_idx->ei_block, shift); in ext4_ext_shift_path_extents()
5146 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5151 if (path[depth].p_idx != EXT_FIRST_INDEX(path[depth].p_hdr)) in ext4_ext_shift_path_extents()
5154 depth--; in ext4_ext_shift_path_extents()
5173 struct ext4_ext_path *path; in ext4_ext_shift_extents() local
5179 /* Let path point to the last extent */ in ext4_ext_shift_extents()
5180 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_shift_extents()
5182 if (IS_ERR(path)) in ext4_ext_shift_extents()
5183 return PTR_ERR(path); in ext4_ext_shift_extents()
5185 depth = path->p_depth; in ext4_ext_shift_extents()
5186 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5190 stop = le32_to_cpu(extent->ee_block); in ext4_ext_shift_extents()
5198 path = ext4_find_extent(inode, start - 1, &path, in ext4_ext_shift_extents()
5200 if (IS_ERR(path)) in ext4_ext_shift_extents()
5201 return PTR_ERR(path); in ext4_ext_shift_extents()
5202 depth = path->p_depth; in ext4_ext_shift_extents()
5203 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5205 ex_start = le32_to_cpu(extent->ee_block); in ext4_ext_shift_extents()
5206 ex_end = le32_to_cpu(extent->ee_block) + in ext4_ext_shift_extents()
5214 (shift > start - ex_end)) { in ext4_ext_shift_extents()
5215 ret = -EINVAL; in ext4_ext_shift_extents()
5219 if (shift > EXT_MAX_BLOCKS - in ext4_ext_shift_extents()
5221 ret = -EINVAL; in ext4_ext_shift_extents()
5247 path = ext4_find_extent(inode, *iterator, &path, in ext4_ext_shift_extents()
5249 if (IS_ERR(path)) in ext4_ext_shift_extents()
5250 return PTR_ERR(path); in ext4_ext_shift_extents()
5251 depth = path->p_depth; in ext4_ext_shift_extents()
5252 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5256 return -EFSCORRUPTED; in ext4_ext_shift_extents()
5259 le32_to_cpu(extent->ee_block)) { in ext4_ext_shift_extents()
5261 if (extent < EXT_LAST_EXTENT(path[depth].p_hdr)) { in ext4_ext_shift_extents()
5262 path[depth].p_ext++; in ext4_ext_shift_extents()
5264 *iterator = ext4_ext_next_allocated_block(path); in ext4_ext_shift_extents()
5271 extent = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5272 *iterator = le32_to_cpu(extent->ee_block) + in ext4_ext_shift_extents()
5275 extent = EXT_FIRST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5276 if (le32_to_cpu(extent->ee_block) > start) in ext4_ext_shift_extents()
5277 *iterator = le32_to_cpu(extent->ee_block) - 1; in ext4_ext_shift_extents()
5278 else if (le32_to_cpu(extent->ee_block) == start) in ext4_ext_shift_extents()
5281 extent = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5282 while (le32_to_cpu(extent->ee_block) >= start) in ext4_ext_shift_extents()
5283 extent--; in ext4_ext_shift_extents()
5285 if (extent == EXT_LAST_EXTENT(path[depth].p_hdr)) in ext4_ext_shift_extents()
5291 path[depth].p_ext = extent; in ext4_ext_shift_extents()
5293 ret = ext4_ext_shift_path_extents(path, shift, inode, in ext4_ext_shift_extents()
5296 if (ret == -EAGAIN) in ext4_ext_shift_extents()
5302 ext4_free_ext_path(path); in ext4_ext_shift_extents()
5309 * Returns: 0 and non-zero on error.
5314 struct super_block *sb = inode->i_sb; in ext4_collapse_range()
5315 struct address_space *mapping = inode->i_mapping; in ext4_collapse_range()
5328 return -EOPNOTSUPP; in ext4_collapse_range()
5332 return -EINVAL; in ext4_collapse_range()
5344 if (offset + len >= inode->i_size) { in ext4_collapse_range()
5345 ret = -EINVAL; in ext4_collapse_range()
5351 ret = -EOPNOTSUPP; in ext4_collapse_range()
5403 down_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5405 ext4_es_remove_extent(inode, punch_start, EXT_MAX_BLOCKS - punch_start); in ext4_collapse_range()
5407 ret = ext4_ext_remove_space(inode, punch_start, punch_stop - 1); in ext4_collapse_range()
5409 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5415 punch_stop - punch_start, SHIFT_LEFT); in ext4_collapse_range()
5417 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5421 new_size = inode->i_size - len; in ext4_collapse_range()
5423 EXT4_I(inode)->i_disksize = new_size; in ext4_collapse_range()
5425 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5452 struct super_block *sb = inode->i_sb; in ext4_insert_range()
5453 struct address_space *mapping = inode->i_mapping; in ext4_insert_range()
5455 struct ext4_ext_path *path; in ext4_insert_range() local
5468 return -EOPNOTSUPP; in ext4_insert_range()
5472 return -EINVAL; in ext4_insert_range()
5482 ret = -EOPNOTSUPP; in ext4_insert_range()
5487 if (len > inode->i_sb->s_maxbytes - inode->i_size) { in ext4_insert_range()
5488 ret = -EFBIG; in ext4_insert_range()
5493 if (offset >= inode->i_size) { in ext4_insert_range()
5494 ret = -EINVAL; in ext4_insert_range()
5521 ret = filemap_write_and_wait_range(inode->i_mapping, ioffset, in ext4_insert_range()
5536 inode->i_size += len; in ext4_insert_range()
5537 EXT4_I(inode)->i_disksize += len; in ext4_insert_range()
5543 down_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5546 path = ext4_find_extent(inode, offset_lblk, NULL, 0); in ext4_insert_range()
5547 if (IS_ERR(path)) { in ext4_insert_range()
5548 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5549 ret = PTR_ERR(path); in ext4_insert_range()
5554 extent = path[depth].p_ext; in ext4_insert_range()
5556 ee_start_lblk = le32_to_cpu(extent->ee_block); in ext4_insert_range()
5568 ret = ext4_split_extent_at(handle, inode, &path, in ext4_insert_range()
5575 ext4_free_ext_path(path); in ext4_insert_range()
5577 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5581 ext4_free_ext_path(path); in ext4_insert_range()
5584 ext4_es_remove_extent(inode, offset_lblk, EXT_MAX_BLOCKS - offset_lblk); in ext4_insert_range()
5593 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5609 * ext4_swap_extents() - Swap extents between two inodes
5620 * stuff such as page-cache locking consistency, bh mapping consistency or
5637 BUG_ON(!rwsem_is_locked(&EXT4_I(inode1)->i_data_sem)); in ext4_swap_extents()
5638 BUG_ON(!rwsem_is_locked(&EXT4_I(inode2)->i_data_sem)); in ext4_swap_extents()
5665 ex1 = path1[path1->p_depth].p_ext; in ext4_swap_extents()
5666 ex2 = path2[path2->p_depth].p_ext; in ext4_swap_extents()
5671 e1_blk = le32_to_cpu(ex1->ee_block); in ext4_swap_extents()
5672 e2_blk = le32_to_cpu(ex2->ee_block); in ext4_swap_extents()
5693 len = next1 - lblk1; in ext4_swap_extents()
5694 if (len < next2 - lblk2) in ext4_swap_extents()
5695 len = next2 - lblk2; in ext4_swap_extents()
5700 count -= len; in ext4_swap_extents()
5720 * path must to be revalidated. */ in ext4_swap_extents()
5726 if (len > e1_blk + e1_len - lblk1) in ext4_swap_extents()
5727 len = e1_blk + e1_len - lblk1; in ext4_swap_extents()
5728 if (len > e2_blk + e2_len - lblk2) in ext4_swap_extents()
5729 len = e2_blk + e2_len - lblk2; in ext4_swap_extents()
5746 * path must to be revalidated. */ in ext4_swap_extents()
5751 *erp = ext4_ext_get_access(handle, inode1, path1 + path1->p_depth); in ext4_swap_extents()
5754 *erp = ext4_ext_get_access(handle, inode2, path2 + path2->p_depth); in ext4_swap_extents()
5762 ex1->ee_len = cpu_to_le16(e2_len); in ext4_swap_extents()
5763 ex2->ee_len = cpu_to_le16(e1_len); in ext4_swap_extents()
5772 path2->p_depth); in ext4_swap_extents()
5776 path1->p_depth); in ext4_swap_extents()
5788 count -= len; in ext4_swap_extents()
5799 * ext4_clu_mapped - determine whether any block in a logical cluster has
5802 * @inode - file containing the logical cluster
5803 * @lclu - logical cluster of interest
5812 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_clu_mapped()
5813 struct ext4_ext_path *path; in ext4_clu_mapped() local
5820 * mapped - no physical clusters have been allocated, and the in ext4_clu_mapped()
5828 path = ext4_find_extent(inode, EXT4_C2B(sbi, lclu), NULL, 0); in ext4_clu_mapped()
5829 if (IS_ERR(path)) { in ext4_clu_mapped()
5830 err = PTR_ERR(path); in ext4_clu_mapped()
5831 path = NULL; in ext4_clu_mapped()
5842 if (unlikely(path[depth].p_ext == NULL && depth != 0)) { in ext4_clu_mapped()
5844 "bad extent address - lblock: %lu, depth: %d, pblock: %lld", in ext4_clu_mapped()
5846 depth, path[depth].p_block); in ext4_clu_mapped()
5847 err = -EFSCORRUPTED; in ext4_clu_mapped()
5851 extent = path[depth].p_ext; in ext4_clu_mapped()
5857 first_lblk = le32_to_cpu(extent->ee_block); in ext4_clu_mapped()
5861 * Three possible outcomes at this point - found extent spanning in ext4_clu_mapped()
5868 ext4_ext_get_actual_len(extent) - 1); in ext4_clu_mapped()
5872 first_lblk = ext4_ext_next_allocated_block(path); in ext4_clu_mapped()
5880 ext4_free_ext_path(path); in ext4_clu_mapped()
5890 * replay path. Returns 0 on success and error on failure.
5895 struct ext4_ext_path *path; in ext4_ext_replay_update_ex() local
5899 path = ext4_find_extent(inode, start, NULL, 0); in ext4_ext_replay_update_ex()
5900 if (IS_ERR(path)) in ext4_ext_replay_update_ex()
5901 return PTR_ERR(path); in ext4_ext_replay_update_ex()
5902 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5904 ret = -EFSCORRUPTED; in ext4_ext_replay_update_ex()
5908 if (le32_to_cpu(ex->ee_block) != start || in ext4_ext_replay_update_ex()
5911 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5912 ret = ext4_force_split_extent_at(NULL, inode, &path, start, 1); in ext4_ext_replay_update_ex()
5913 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5917 path = ext4_find_extent(inode, start, &path, 0); in ext4_ext_replay_update_ex()
5918 if (IS_ERR(path)) in ext4_ext_replay_update_ex()
5919 return PTR_ERR(path); in ext4_ext_replay_update_ex()
5920 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5921 WARN_ON(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, in ext4_ext_replay_update_ex()
5927 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5931 path = ext4_find_extent(inode, start, &path, 0); in ext4_ext_replay_update_ex()
5932 if (IS_ERR(path)) in ext4_ext_replay_update_ex()
5933 return PTR_ERR(path); in ext4_ext_replay_update_ex()
5934 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5942 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5943 ret = ext4_ext_dirty(NULL, inode, &path[path->p_depth]); in ext4_ext_replay_update_ex()
5944 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5946 ext4_free_ext_path(path); in ext4_ext_replay_update_ex()
5954 struct ext4_ext_path *path = NULL; in ext4_ext_replay_shrink_inode() local
5959 path = ext4_find_extent(inode, cur, NULL, 0); in ext4_ext_replay_shrink_inode()
5960 if (IS_ERR(path)) in ext4_ext_replay_shrink_inode()
5962 ex = path[path->p_depth].p_ext; in ext4_ext_replay_shrink_inode()
5964 ext4_free_ext_path(path); in ext4_ext_replay_shrink_inode()
5969 cur = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_replay_shrink_inode()
5972 ext4_ext_try_to_merge(NULL, inode, path, ex); in ext4_ext_replay_shrink_inode()
5973 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_shrink_inode()
5974 ext4_ext_dirty(NULL, inode, &path[path->p_depth]); in ext4_ext_replay_shrink_inode()
5975 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_shrink_inode()
5977 ext4_free_ext_path(path); in ext4_ext_replay_shrink_inode()
5985 struct ext4_map_blocks map; in skip_hole() local
5987 map.m_lblk = *cur; in skip_hole()
5988 map.m_len = ((inode->i_size) >> inode->i_sb->s_blocksize_bits) - *cur; in skip_hole()
5990 ret = ext4_map_blocks(NULL, inode, &map, 0); in skip_hole()
5995 *cur = *cur + map.m_len; in skip_hole()
6002 struct ext4_ext_path *path = NULL, *path2 = NULL; in ext4_ext_replay_set_iblocks() local
6007 struct ext4_map_blocks map; in ext4_ext_replay_set_iblocks() local
6010 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_replay_set_iblocks()
6012 if (IS_ERR(path)) in ext4_ext_replay_set_iblocks()
6013 return PTR_ERR(path); in ext4_ext_replay_set_iblocks()
6014 ex = path[path->p_depth].p_ext; in ext4_ext_replay_set_iblocks()
6016 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6019 end = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_replay_set_iblocks()
6020 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6025 map.m_lblk = cur; in ext4_ext_replay_set_iblocks()
6026 map.m_len = end - cur; in ext4_ext_replay_set_iblocks()
6027 ret = ext4_map_blocks(NULL, inode, &map, 0); in ext4_ext_replay_set_iblocks()
6032 cur = cur + map.m_len; in ext4_ext_replay_set_iblocks()
6038 * their paths. When path is different for 2 successive extents in ext4_ext_replay_set_iblocks()
6039 * we compare the blocks in the path at each level and increment in ext4_ext_replay_set_iblocks()
6046 path = ext4_find_extent(inode, cur, NULL, 0); in ext4_ext_replay_set_iblocks()
6047 if (IS_ERR(path)) in ext4_ext_replay_set_iblocks()
6049 numblks += path->p_depth; in ext4_ext_replay_set_iblocks()
6050 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6052 path = ext4_find_extent(inode, cur, NULL, 0); in ext4_ext_replay_set_iblocks()
6053 if (IS_ERR(path)) in ext4_ext_replay_set_iblocks()
6055 ex = path[path->p_depth].p_ext; in ext4_ext_replay_set_iblocks()
6057 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6060 cur = max(cur + 1, le32_to_cpu(ex->ee_block) + in ext4_ext_replay_set_iblocks()
6064 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6069 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6072 for (i = 0; i <= max(path->p_depth, path2->p_depth); i++) { in ext4_ext_replay_set_iblocks()
6074 if (i <= path->p_depth) in ext4_ext_replay_set_iblocks()
6075 cmp1 = path[i].p_bh ? in ext4_ext_replay_set_iblocks()
6076 path[i].p_bh->b_blocknr : 0; in ext4_ext_replay_set_iblocks()
6077 if (i <= path2->p_depth) in ext4_ext_replay_set_iblocks()
6079 path2[i].p_bh->b_blocknr : 0; in ext4_ext_replay_set_iblocks()
6083 ext4_free_ext_path(path); in ext4_ext_replay_set_iblocks()
6088 inode->i_blocks = numblks << (inode->i_sb->s_blocksize_bits - 9); in ext4_ext_replay_set_iblocks()
6095 struct ext4_ext_path *path = NULL; in ext4_ext_clear_bb() local
6099 struct ext4_map_blocks map; in ext4_ext_clear_bb() local
6105 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_clear_bb()
6107 if (IS_ERR(path)) in ext4_ext_clear_bb()
6108 return PTR_ERR(path); in ext4_ext_clear_bb()
6109 ex = path[path->p_depth].p_ext; in ext4_ext_clear_bb()
6111 ext4_free_ext_path(path); in ext4_ext_clear_bb()
6114 end = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_clear_bb()
6115 ext4_free_ext_path(path); in ext4_ext_clear_bb()
6119 map.m_lblk = cur; in ext4_ext_clear_bb()
6120 map.m_len = end - cur; in ext4_ext_clear_bb()
6121 ret = ext4_map_blocks(NULL, inode, &map, 0); in ext4_ext_clear_bb()
6125 path = ext4_find_extent(inode, map.m_lblk, NULL, 0); in ext4_ext_clear_bb()
6126 if (!IS_ERR_OR_NULL(path)) { in ext4_ext_clear_bb()
6127 for (j = 0; j < path->p_depth; j++) { in ext4_ext_clear_bb()
6129 ext4_mb_mark_bb(inode->i_sb, in ext4_ext_clear_bb()
6130 path[j].p_block, 1, 0); in ext4_ext_clear_bb()
6131 ext4_fc_record_regions(inode->i_sb, inode->i_ino, in ext4_ext_clear_bb()
6132 0, path[j].p_block, 1, 1); in ext4_ext_clear_bb()
6134 ext4_free_ext_path(path); in ext4_ext_clear_bb()
6136 ext4_mb_mark_bb(inode->i_sb, map.m_pblk, map.m_len, 0); in ext4_ext_clear_bb()
6137 ext4_fc_record_regions(inode->i_sb, inode->i_ino, in ext4_ext_clear_bb()
6138 map.m_lblk, map.m_pblk, map.m_len, 1); in ext4_ext_clear_bb()
6140 cur = cur + map.m_len; in ext4_ext_clear_bb()