Lines Matching +full:depth +full:-
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
30 #include <linux/backing-dev.h>
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()
127 down_write(&EXT4_I(inode)->i_data_sem); in ext4_datasem_ensure_credits()
133 * - EROFS
134 * - ENOMEM
141 if (path->p_bh) { in ext4_ext_get_access()
143 BUFFER_TRACE(path->p_bh, "get_write_access"); in ext4_ext_get_access()
144 err = ext4_journal_get_write_access(handle, path->p_bh); in ext4_ext_get_access()
152 clear_buffer_verified(path->p_bh); in ext4_ext_get_access()
155 /* we use in-core data, no need to protect them */ in ext4_ext_get_access()
161 * - EROFS
162 * - ENOMEM
163 * - EIO
171 WARN_ON(!rwsem_is_locked(&EXT4_I(inode)->i_data_sem)); in __ext4_ext_dirty()
172 if (path->p_bh) { in __ext4_ext_dirty()
173 ext4_extent_block_csum_set(inode, ext_block_hdr(path->p_bh)); in __ext4_ext_dirty()
176 inode, path->p_bh); in __ext4_ext_dirty()
177 /* Extents updating done, re-set verified flag */ in __ext4_ext_dirty()
179 set_buffer_verified(path->p_bh); in __ext4_ext_dirty()
195 int depth = path->p_depth; in ext4_ext_find_goal() local
201 * non-sparse --- i.e., in the case of libbfd writing in ext4_ext_find_goal()
202 * an ELF object sections out-of-order but in a way in ext4_ext_find_goal()
206 * non-ideal if we are writing a sparse file such as in ext4_ext_find_goal()
215 ex = path[depth].p_ext; in ext4_ext_find_goal()
218 ext4_lblk_t ext_block = le32_to_cpu(ex->ee_block); in ext4_ext_find_goal()
221 return ext_pblk + (block - ext_block); in ext4_ext_find_goal()
223 return ext_pblk - (ext_block - block); in ext4_ext_find_goal()
228 if (path[depth].p_bh) in ext4_ext_find_goal()
229 return path[depth].p_bh->b_blocknr; in ext4_ext_find_goal()
246 goal = ext4_ext_find_goal(inode, path, le32_to_cpu(ex->ee_block)); in ext4_ext_new_meta_block()
256 size = (inode->i_sb->s_blocksize - sizeof(struct ext4_extent_header)) in ext4_ext_space_block()
269 size = (inode->i_sb->s_blocksize - sizeof(struct ext4_extent_header)) in ext4_ext_space_block_idx()
282 size = sizeof(EXT4_I(inode)->i_data); in ext4_ext_space_root()
283 size -= sizeof(struct ext4_extent_header); in ext4_ext_space_root()
296 size = sizeof(EXT4_I(inode)->i_data); in ext4_ext_space_root_idx()
297 size -= sizeof(struct ext4_extent_header); in ext4_ext_space_root_idx()
312 int unwritten = ext4_ext_is_unwritten(path[path->p_depth].p_ext); in ext4_force_split_extent_at()
324 ext4_ext_max_entries(struct inode *inode, int depth) in ext4_ext_max_entries() argument
328 if (depth == ext_depth(inode)) { in ext4_ext_max_entries()
329 if (depth == 0) in ext4_ext_max_entries()
334 if (depth == 0) in ext4_ext_max_entries()
347 ext4_lblk_t lblock = le32_to_cpu(ext->ee_block); in ext4_valid_extent()
351 * - zero length in ext4_valid_extent()
352 * - overflow/wrap-around in ext4_valid_extent()
370 int depth) in ext4_valid_extent_entries() argument
376 if (eh->eh_entries == 0) in ext4_valid_extent_entries()
379 entries = le16_to_cpu(eh->eh_entries); in ext4_valid_extent_entries()
381 if (depth == 0) { in ext4_valid_extent_entries()
389 if (depth != ext_depth(inode) && in ext4_valid_extent_entries()
390 lblk != le32_to_cpu(ext->ee_block)) in ext4_valid_extent_entries()
397 lblock = le32_to_cpu(ext->ee_block); in ext4_valid_extent_entries()
404 entries--; in ext4_valid_extent_entries()
413 if (depth != ext_depth(inode) && in ext4_valid_extent_entries()
414 lblk != le32_to_cpu(ext_idx->ei_block)) in ext4_valid_extent_entries()
421 lblock = le32_to_cpu(ext_idx->ei_block); in ext4_valid_extent_entries()
427 entries--; in ext4_valid_extent_entries()
436 int depth, ext4_fsblk_t pblk, ext4_lblk_t lblk) in __ext4_ext_check() argument
439 int max = 0, err = -EFSCORRUPTED; in __ext4_ext_check()
441 if (unlikely(eh->eh_magic != EXT4_EXT_MAGIC)) { in __ext4_ext_check()
445 if (unlikely(le16_to_cpu(eh->eh_depth) != depth)) { in __ext4_ext_check()
449 if (unlikely(eh->eh_max == 0)) { in __ext4_ext_check()
453 max = ext4_ext_max_entries(inode, depth); in __ext4_ext_check()
454 if (unlikely(le16_to_cpu(eh->eh_max) > max)) { in __ext4_ext_check()
458 if (unlikely(le16_to_cpu(eh->eh_entries) > le16_to_cpu(eh->eh_max))) { in __ext4_ext_check()
462 if (unlikely((eh->eh_entries == 0) && (depth > 0))) { in __ext4_ext_check()
466 if (!ext4_valid_extent_entries(inode, eh, lblk, &pblk, depth)) { in __ext4_ext_check()
470 if (unlikely(depth > 32)) { in __ext4_ext_check()
474 /* Verify checksum on non-root extent tree nodes */ in __ext4_ext_check()
475 if (ext_depth(inode) != depth && in __ext4_ext_check()
478 err = -EFSBADCRC; in __ext4_ext_check()
484 ext4_error_inode_err(inode, function, line, 0, -err, in __ext4_ext_check()
485 "pblk %llu bad header/extent: %s - magic %x, " in __ext4_ext_check()
486 "entries %u, max %u(%u), depth %u(%u)", in __ext4_ext_check()
488 le16_to_cpu(eh->eh_magic), in __ext4_ext_check()
489 le16_to_cpu(eh->eh_entries), in __ext4_ext_check()
490 le16_to_cpu(eh->eh_max), in __ext4_ext_check()
491 max, le16_to_cpu(eh->eh_depth), depth); in __ext4_ext_check()
495 #define ext4_ext_check(inode, eh, depth, pblk) \ argument
496 __ext4_ext_check(__func__, __LINE__, (inode), (eh), (depth), (pblk), 0)
510 for (i = le16_to_cpu(eh->eh_entries); i > 0; i--, ex++) { in ext4_cache_extents()
512 ext4_lblk_t lblk = le32_to_cpu(ex->ee_block); in ext4_cache_extents()
516 ext4_es_cache_extent(inode, prev, lblk - prev, ~0, in ext4_cache_extents()
530 int depth, int flags) in __read_extent_tree_block() argument
541 bh = sb_getblk_gfp(inode->i_sb, pblk, gfp_flags); in __read_extent_tree_block()
543 return ERR_PTR(-ENOMEM); in __read_extent_tree_block()
552 if (unlikely(ext_block_hdr(bh)->eh_magic != EXT4_EXT_MAGIC)) { in __read_extent_tree_block()
553 err = -EFSCORRUPTED; in __read_extent_tree_block()
556 (unsigned long long)bh->b_blocknr); in __read_extent_tree_block()
564 depth, pblk, le32_to_cpu(idx->ei_block)); in __read_extent_tree_block()
572 if (!(flags & EXT4_EX_NOCACHE) && depth == 0) { in __read_extent_tree_block()
583 #define read_extent_tree_block(inode, idx, depth, flags) \ argument
585 (depth), (flags))
596 int i = 0, depth, ret = 0; in ext4_ext_precache() local
599 return 0; /* not an extent-mapped inode */ in ext4_ext_precache()
601 down_read(&ei->i_data_sem); in ext4_ext_precache()
602 depth = ext_depth(inode); in ext4_ext_precache()
605 if (!depth) { in ext4_ext_precache()
606 up_read(&ei->i_data_sem); in ext4_ext_precache()
610 path = kcalloc(depth + 1, sizeof(struct ext4_ext_path), in ext4_ext_precache()
613 up_read(&ei->i_data_sem); in ext4_ext_precache()
614 return -ENOMEM; in ext4_ext_precache()
618 ret = ext4_ext_check(inode, path[0].p_hdr, depth, 0); in ext4_ext_precache()
627 if ((i == depth) || in ext4_ext_precache()
631 i--; in ext4_ext_precache()
635 depth - i - 1, in ext4_ext_precache()
648 up_read(&ei->i_data_sem); in ext4_ext_precache()
657 int k, l = path->p_depth; in ext4_ext_show_path()
661 if (path->p_idx) { in ext4_ext_show_path()
662 ext_debug(inode, " %d->%llu", in ext4_ext_show_path()
663 le32_to_cpu(path->p_idx->ei_block), in ext4_ext_show_path()
664 ext4_idx_pblock(path->p_idx)); in ext4_ext_show_path()
665 } else if (path->p_ext) { in ext4_ext_show_path()
667 le32_to_cpu(path->p_ext->ee_block), in ext4_ext_show_path()
668 ext4_ext_is_unwritten(path->p_ext), in ext4_ext_show_path()
669 ext4_ext_get_actual_len(path->p_ext), in ext4_ext_show_path()
670 ext4_ext_pblock(path->p_ext)); in ext4_ext_show_path()
679 int depth = ext_depth(inode); in ext4_ext_show_leaf() local
687 eh = path[depth].p_hdr; in ext4_ext_show_leaf()
692 for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ex++) { in ext4_ext_show_leaf()
693 ext_debug(inode, "%d:[%d]%d:%llu ", le32_to_cpu(ex->ee_block), in ext4_ext_show_leaf()
703 int depth = ext_depth(inode); in ext4_ext_show_move() local
706 if (depth != level) { in ext4_ext_show_move()
711 level, le32_to_cpu(idx->ei_block), in ext4_ext_show_move()
719 ex = path[depth].p_ext; in ext4_ext_show_move()
720 while (ex <= EXT_MAX_EXTENT(path[depth].p_hdr)) { in ext4_ext_show_move()
722 le32_to_cpu(ex->ee_block), in ext4_ext_show_move()
739 int depth, i; in ext4_ext_drop_refs() local
743 depth = path->p_depth; in ext4_ext_drop_refs()
744 for (i = 0; i <= depth; i++, path++) { in ext4_ext_drop_refs()
745 brelse(path->p_bh); in ext4_ext_drop_refs()
746 path->p_bh = NULL; in ext4_ext_drop_refs()
759 struct ext4_extent_header *eh = path->p_hdr; in ext4_ext_binsearch_idx()
768 m = l + (r - l) / 2; in ext4_ext_binsearch_idx()
769 if (block < le32_to_cpu(m->ei_block)) in ext4_ext_binsearch_idx()
770 r = m - 1; in ext4_ext_binsearch_idx()
774 le32_to_cpu(l->ei_block), m, le32_to_cpu(m->ei_block), in ext4_ext_binsearch_idx()
775 r, le32_to_cpu(r->ei_block)); in ext4_ext_binsearch_idx()
778 path->p_idx = l - 1; in ext4_ext_binsearch_idx()
779 ext_debug(inode, " -> %u->%lld ", le32_to_cpu(path->p_idx->ei_block), in ext4_ext_binsearch_idx()
780 ext4_idx_pblock(path->p_idx)); in ext4_ext_binsearch_idx()
788 for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ix++) { in ext4_ext_binsearch_idx()
789 if (k != 0 && le32_to_cpu(ix->ei_block) <= in ext4_ext_binsearch_idx()
790 le32_to_cpu(ix[-1].ei_block)) { in ext4_ext_binsearch_idx()
795 le32_to_cpu(ix->ei_block), in ext4_ext_binsearch_idx()
796 le32_to_cpu(ix[-1].ei_block)); in ext4_ext_binsearch_idx()
798 BUG_ON(k && le32_to_cpu(ix->ei_block) in ext4_ext_binsearch_idx()
799 <= le32_to_cpu(ix[-1].ei_block)); in ext4_ext_binsearch_idx()
800 if (block < le32_to_cpu(ix->ei_block)) in ext4_ext_binsearch_idx()
804 BUG_ON(chix != path->p_idx); in ext4_ext_binsearch_idx()
819 struct ext4_extent_header *eh = path->p_hdr; in ext4_ext_binsearch()
822 if (eh->eh_entries == 0) { in ext4_ext_binsearch()
836 m = l + (r - l) / 2; 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()
842 le32_to_cpu(l->ee_block), m, le32_to_cpu(m->ee_block), in ext4_ext_binsearch()
843 r, le32_to_cpu(r->ee_block)); in ext4_ext_binsearch()
846 path->p_ext = l - 1; in ext4_ext_binsearch()
847 ext_debug(inode, " -> %d:%llu:[%d]%d ", in ext4_ext_binsearch()
848 le32_to_cpu(path->p_ext->ee_block), in ext4_ext_binsearch()
849 ext4_ext_pblock(path->p_ext), in ext4_ext_binsearch()
850 ext4_ext_is_unwritten(path->p_ext), in ext4_ext_binsearch()
851 ext4_ext_get_actual_len(path->p_ext)); in ext4_ext_binsearch()
859 for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ex++) { in ext4_ext_binsearch()
860 BUG_ON(k && le32_to_cpu(ex->ee_block) in ext4_ext_binsearch()
861 <= le32_to_cpu(ex[-1].ee_block)); in ext4_ext_binsearch()
862 if (block < le32_to_cpu(ex->ee_block)) in ext4_ext_binsearch()
866 BUG_ON(chex != path->p_ext); in ext4_ext_binsearch()
877 eh->eh_depth = 0; in ext4_ext_tree_init()
878 eh->eh_entries = 0; in ext4_ext_tree_init()
879 eh->eh_magic = EXT4_EXT_MAGIC; in ext4_ext_tree_init()
880 eh->eh_max = cpu_to_le16(ext4_ext_space_root(inode, 0)); in ext4_ext_tree_init()
881 eh->eh_generation = 0; in ext4_ext_tree_init()
892 short int depth, i, ppos = 0; in ext4_find_extent() local
900 depth = ext_depth(inode); in ext4_find_extent()
901 if (depth < 0 || depth > EXT4_MAX_EXTENT_DEPTH) { in ext4_find_extent()
902 EXT4_ERROR_INODE(inode, "inode has invalid extent depth: %d", in ext4_find_extent()
903 depth); in ext4_find_extent()
904 ret = -EFSCORRUPTED; in ext4_find_extent()
910 if (depth > path[0].p_maxdepth) { in ext4_find_extent()
916 /* account possible depth increase */ in ext4_find_extent()
917 path = kcalloc(depth + 2, sizeof(struct ext4_ext_path), in ext4_find_extent()
920 return ERR_PTR(-ENOMEM); in ext4_find_extent()
921 path[0].p_maxdepth = depth + 1; in ext4_find_extent()
926 i = depth; in ext4_find_extent()
927 if (!(flags & EXT4_EX_NOCACHE) && depth == 0) in ext4_find_extent()
931 ext_debug(inode, "depth %d: num %d, max %d\n", in ext4_find_extent()
932 ppos, le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max)); in ext4_find_extent()
939 bh = read_extent_tree_block(inode, path[ppos].p_idx, --i, flags); in ext4_find_extent()
991 if (unlikely(logical == le32_to_cpu(curp->p_idx->ei_block))) { in ext4_ext_insert_index()
994 logical, le32_to_cpu(curp->p_idx->ei_block)); in ext4_ext_insert_index()
995 return -EFSCORRUPTED; in ext4_ext_insert_index()
998 if (unlikely(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()
1002 le16_to_cpu(curp->p_hdr->eh_entries), in ext4_ext_insert_index()
1003 le16_to_cpu(curp->p_hdr->eh_max)); in ext4_ext_insert_index()
1004 return -EFSCORRUPTED; in ext4_ext_insert_index()
1007 if (logical > le32_to_cpu(curp->p_idx->ei_block)) { in ext4_ext_insert_index()
1011 ix = curp->p_idx + 1; in ext4_ext_insert_index()
1016 ix = curp->p_idx; in ext4_ext_insert_index()
1019 if (unlikely(ix > EXT_MAX_INDEX(curp->p_hdr))) { in ext4_ext_insert_index()
1021 return -EFSCORRUPTED; in ext4_ext_insert_index()
1024 len = EXT_LAST_INDEX(curp->p_hdr) - ix + 1; in ext4_ext_insert_index()
1033 ix->ei_block = cpu_to_le32(logical); in ext4_ext_insert_index()
1035 le16_add_cpu(&curp->p_hdr->eh_entries, 1); in ext4_ext_insert_index()
1037 if (unlikely(ix > EXT_LAST_INDEX(curp->p_hdr))) { in ext4_ext_insert_index()
1039 return -EFSCORRUPTED; in ext4_ext_insert_index()
1043 ext4_std_error(inode->i_sb, err); in ext4_ext_insert_index()
1051 * at depth @at:
1052 * - allocates all needed blocks (new leaf and all intermediate index blocks)
1053 * - makes decision where to split
1054 * - moves remaining extents and index entries (right to the split point)
1056 * - initializes subtree
1064 int depth = ext_depth(inode); in ext4_ext_split() local
1083 if (unlikely(path[depth].p_ext > EXT_MAX_EXTENT(path[depth].p_hdr))) { in ext4_ext_split()
1085 return -EFSCORRUPTED; in ext4_ext_split()
1087 if (path[depth].p_ext != EXT_MAX_EXTENT(path[depth].p_hdr)) { in ext4_ext_split()
1088 border = path[depth].p_ext[1].ee_block; in ext4_ext_split()
1093 border = newext->ee_block; in ext4_ext_split()
1101 * and mark filesystem read-only. index won't in ext4_ext_split()
1111 ablocks = kcalloc(depth, sizeof(ext4_fsblk_t), gfp_flags); in ext4_ext_split()
1113 return -ENOMEM; in ext4_ext_split()
1116 ext_debug(inode, "allocate %d blocks for indexes/leaf\n", depth - at); in ext4_ext_split()
1117 for (a = 0; a < depth - at; a++) { in ext4_ext_split()
1126 newblock = ablocks[--a]; in ext4_ext_split()
1129 err = -EFSCORRUPTED; in ext4_ext_split()
1132 bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS); in ext4_ext_split()
1134 err = -ENOMEM; in ext4_ext_split()
1144 neh->eh_entries = 0; in ext4_ext_split()
1145 neh->eh_max = cpu_to_le16(ext4_ext_space_block(inode, 0)); in ext4_ext_split()
1146 neh->eh_magic = EXT4_EXT_MAGIC; in ext4_ext_split()
1147 neh->eh_depth = 0; in ext4_ext_split()
1148 neh->eh_generation = 0; in ext4_ext_split()
1150 /* move remainder of path[depth] to the new leaf */ in ext4_ext_split()
1151 if (unlikely(path[depth].p_hdr->eh_entries != in ext4_ext_split()
1152 path[depth].p_hdr->eh_max)) { in ext4_ext_split()
1154 path[depth].p_hdr->eh_entries, in ext4_ext_split()
1155 path[depth].p_hdr->eh_max); in ext4_ext_split()
1156 err = -EFSCORRUPTED; in ext4_ext_split()
1160 m = EXT_MAX_EXTENT(path[depth].p_hdr) - path[depth].p_ext++; in ext4_ext_split()
1161 ext4_ext_show_move(inode, path, newblock, depth); in ext4_ext_split()
1165 memmove(ex, path[depth].p_ext, sizeof(struct ext4_extent) * m); in ext4_ext_split()
1166 le16_add_cpu(&neh->eh_entries, m); in ext4_ext_split()
1171 sizeof(struct ext4_extent) * le16_to_cpu(neh->eh_entries); in ext4_ext_split()
1172 memset(bh->b_data + ext_size, 0, inode->i_sb->s_blocksize - ext_size); in ext4_ext_split()
1185 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_split()
1188 le16_add_cpu(&path[depth].p_hdr->eh_entries, -m); in ext4_ext_split()
1189 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_split()
1196 k = depth - at - 1; in ext4_ext_split()
1199 err = -EFSCORRUPTED; in ext4_ext_split()
1205 /* current depth stored in i var */ in ext4_ext_split()
1206 i = depth - 1; in ext4_ext_split()
1207 while (k--) { in ext4_ext_split()
1209 newblock = ablocks[--a]; in ext4_ext_split()
1210 bh = sb_getblk(inode->i_sb, newblock); in ext4_ext_split()
1212 err = -ENOMEM; in ext4_ext_split()
1222 neh->eh_entries = cpu_to_le16(1); in ext4_ext_split()
1223 neh->eh_magic = EXT4_EXT_MAGIC; in ext4_ext_split()
1224 neh->eh_max = cpu_to_le16(ext4_ext_space_block_idx(inode, 0)); in ext4_ext_split()
1225 neh->eh_depth = cpu_to_le16(depth - i); in ext4_ext_split()
1226 neh->eh_generation = 0; in ext4_ext_split()
1228 fidx->ei_block = border; in ext4_ext_split()
1231 ext_debug(inode, "int.index at %d (block %llu): %u -> %llu\n", in ext4_ext_split()
1239 le32_to_cpu(path[i].p_ext->ee_block)); in ext4_ext_split()
1240 err = -EFSCORRUPTED; in ext4_ext_split()
1244 m = EXT_MAX_INDEX(path[i].p_hdr) - path[i].p_idx++; in ext4_ext_split()
1251 le16_add_cpu(&neh->eh_entries, m); in ext4_ext_split()
1255 (sizeof(struct ext4_extent) * le16_to_cpu(neh->eh_entries)); in ext4_ext_split()
1256 memset(bh->b_data + ext_size, 0, in ext4_ext_split()
1257 inode->i_sb->s_blocksize - ext_size); in ext4_ext_split()
1273 le16_add_cpu(&path[i].p_hdr->eh_entries, -m); in ext4_ext_split()
1279 i--; in ext4_ext_split()
1295 for (i = 0; i < depth; i++) { in ext4_ext_split()
1310 * - allocates new block
1311 * - moves top-level data (index block or leaf) into the new block
1312 * - initializes new top-level, creating index that points to the
1321 struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es; in ext4_ext_grow_indepth()
1328 if (goal > le32_to_cpu(es->s_first_data_block)) { in ext4_ext_grow_indepth()
1330 goal--; in ext4_ext_grow_indepth()
1338 bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS); in ext4_ext_grow_indepth()
1340 return -ENOMEM; in ext4_ext_grow_indepth()
1349 ext_size = sizeof(EXT4_I(inode)->i_data); in ext4_ext_grow_indepth()
1350 /* move top-level index/leaf into new block */ in ext4_ext_grow_indepth()
1351 memmove(bh->b_data, EXT4_I(inode)->i_data, ext_size); in ext4_ext_grow_indepth()
1353 memset(bh->b_data + ext_size, 0, inode->i_sb->s_blocksize - ext_size); in ext4_ext_grow_indepth()
1360 neh->eh_max = cpu_to_le16(ext4_ext_space_block_idx(inode, 0)); in ext4_ext_grow_indepth()
1362 neh->eh_max = cpu_to_le16(ext4_ext_space_block(inode, 0)); in ext4_ext_grow_indepth()
1363 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.
1408 int depth, i, err = 0; in ext4_ext_create_new_leaf() local
1411 i = depth = ext_depth(inode); in ext4_ext_create_new_leaf()
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()
1431 (ext4_lblk_t)le32_to_cpu(newext->ee_block), in ext4_ext_create_new_leaf()
1436 /* tree is full, time to grow in depth */ in ext4_ext_create_new_leaf()
1443 (ext4_lblk_t)le32_to_cpu(newext->ee_block), in ext4_ext_create_new_leaf()
1451 * only first (depth 0 -> 1) produces free space; in ext4_ext_create_new_leaf()
1454 depth = ext_depth(inode); 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()
1478 int depth, ee_len; in ext4_ext_search_left() local
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()
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()
1507 "ix (%d) != EXT_FIRST_INDEX (%d) (depth %d)!", in ext4_ext_search_left()
1508 ix != NULL ? le32_to_cpu(ix->ei_block) : 0, in ext4_ext_search_left()
1509 EXT_FIRST_INDEX(path[depth].p_hdr) != NULL ? in ext4_ext_search_left()
1510 le32_to_cpu(EXT_FIRST_INDEX(path[depth].p_hdr)->ei_block) : 0, in ext4_ext_search_left()
1511 depth); in ext4_ext_search_left()
1512 return -EFSCORRUPTED; in ext4_ext_search_left()
1518 if (unlikely(*logical < (le32_to_cpu(ex->ee_block) + ee_len))) { in ext4_ext_search_left()
1521 *logical, le32_to_cpu(ex->ee_block), ee_len); in ext4_ext_search_left()
1522 return -EFSCORRUPTED; in ext4_ext_search_left()
1525 *logical = le32_to_cpu(ex->ee_block) + ee_len - 1; in ext4_ext_search_left()
1526 *phys = ext4_ext_pblock(ex) + ee_len - 1; in ext4_ext_search_left()
1546 int depth; /* Note, NOT eh_depth; depth from top of tree */ in ext4_ext_search_right() local
1551 return -EFSCORRUPTED; in ext4_ext_search_right()
1553 depth = path->p_depth; in ext4_ext_search_right()
1556 if (depth == 0 && path->p_ext == NULL) in ext4_ext_search_right()
1563 ex = path[depth].p_ext; in ext4_ext_search_right()
1565 if (*logical < le32_to_cpu(ex->ee_block)) { in ext4_ext_search_right()
1566 if (unlikely(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex)) { in ext4_ext_search_right()
1569 depth); in ext4_ext_search_right()
1570 return -EFSCORRUPTED; in ext4_ext_search_right()
1572 while (--depth >= 0) { in ext4_ext_search_right()
1573 ix = path[depth].p_idx; in ext4_ext_search_right()
1574 if (unlikely(ix != EXT_FIRST_INDEX(path[depth].p_hdr))) { in ext4_ext_search_right()
1578 return -EFSCORRUPTED; in ext4_ext_search_right()
1584 if (unlikely(*logical < (le32_to_cpu(ex->ee_block) + ee_len))) { in ext4_ext_search_right()
1587 *logical, le32_to_cpu(ex->ee_block), ee_len); in ext4_ext_search_right()
1588 return -EFSCORRUPTED; in ext4_ext_search_right()
1591 if (ex != EXT_LAST_EXTENT(path[depth].p_hdr)) { in ext4_ext_search_right()
1598 while (--depth >= 0) { in ext4_ext_search_right()
1599 ix = path[depth].p_idx; in ext4_ext_search_right()
1600 if (ix != EXT_LAST_INDEX(path[depth].p_hdr)) in ext4_ext_search_right()
1612 while (++depth < path->p_depth) { in ext4_ext_search_right()
1614 bh = read_extent_tree_block(inode, ix, path->p_depth - depth, 0); in ext4_ext_search_right()
1622 bh = read_extent_tree_block(inode, ix, path->p_depth - depth, 0); in ext4_ext_search_right()
1628 *logical = le32_to_cpu(ex->ee_block); in ext4_ext_search_right()
1647 int depth; in ext4_ext_next_allocated_block() local
1650 depth = path->p_depth; in ext4_ext_next_allocated_block()
1652 if (depth == 0 && path->p_ext == NULL) in ext4_ext_next_allocated_block()
1655 while (depth >= 0) { in ext4_ext_next_allocated_block()
1656 struct ext4_ext_path *p = &path[depth]; in ext4_ext_next_allocated_block()
1658 if (depth == path->p_depth) { in ext4_ext_next_allocated_block()
1660 if (p->p_ext && p->p_ext != EXT_LAST_EXTENT(p->p_hdr)) in ext4_ext_next_allocated_block()
1661 return le32_to_cpu(p->p_ext[1].ee_block); in ext4_ext_next_allocated_block()
1664 if (p->p_idx != EXT_LAST_INDEX(p->p_hdr)) in ext4_ext_next_allocated_block()
1665 return le32_to_cpu(p->p_idx[1].ei_block); in ext4_ext_next_allocated_block()
1667 depth--; in ext4_ext_next_allocated_block()
1679 int depth; in ext4_ext_next_leaf_block() local
1682 depth = path->p_depth; in ext4_ext_next_leaf_block()
1684 /* zero-tree has no leaf blocks at all */ in ext4_ext_next_leaf_block()
1685 if (depth == 0) in ext4_ext_next_leaf_block()
1689 depth--; in ext4_ext_next_leaf_block()
1691 while (depth >= 0) { in ext4_ext_next_leaf_block()
1692 if (path[depth].p_idx != in ext4_ext_next_leaf_block()
1693 EXT_LAST_INDEX(path[depth].p_hdr)) in ext4_ext_next_leaf_block()
1695 le32_to_cpu(path[depth].p_idx[1].ei_block); in ext4_ext_next_leaf_block()
1696 depth--; in ext4_ext_next_leaf_block()
1712 int depth = ext_depth(inode); in ext4_ext_correct_indexes() local
1717 eh = path[depth].p_hdr; in ext4_ext_correct_indexes()
1718 ex = path[depth].p_ext; in ext4_ext_correct_indexes()
1723 return -EFSCORRUPTED; in ext4_ext_correct_indexes()
1726 if (depth == 0) { in ext4_ext_correct_indexes()
1739 k = depth - 1; in ext4_ext_correct_indexes()
1740 border = path[depth].p_ext->ee_block; in ext4_ext_correct_indexes()
1744 path[k].p_idx->ei_block = border; in ext4_ext_correct_indexes()
1749 while (k--) { in ext4_ext_correct_indexes()
1750 /* change all left-side indexes */ in ext4_ext_correct_indexes()
1756 path[k].p_idx->ei_block = border; in ext4_ext_correct_indexes()
1777 if (le32_to_cpu(ex1->ee_block) + ext1_ee_len != in ext4_can_extents_be_merged()
1778 le32_to_cpu(ex2->ee_block)) in ext4_can_extents_be_merged()
1800 * left, pass "ex - 1" as argument instead of "ex".
1809 unsigned int depth, len; in ext4_ext_try_to_merge_right() local
1812 depth = ext_depth(inode); in ext4_ext_try_to_merge_right()
1813 BUG_ON(path[depth].p_hdr == NULL); in ext4_ext_try_to_merge_right()
1814 eh = path[depth].p_hdr; in ext4_ext_try_to_merge_right()
1821 ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) in ext4_ext_try_to_merge_right()
1827 len = (EXT_LAST_EXTENT(eh) - ex - 1) in ext4_ext_try_to_merge_right()
1831 le16_add_cpu(&eh->eh_entries, -1); in ext4_ext_try_to_merge_right()
1833 WARN_ON(eh->eh_entries == 0); in ext4_ext_try_to_merge_right()
1834 if (!eh->eh_entries) in ext4_ext_try_to_merge_right()
1835 EXT4_ERROR_INODE(inode, "eh->eh_entries = 0!"); in ext4_ext_try_to_merge_right()
1854 (le16_to_cpu(path[0].p_hdr->eh_entries) != 1) || in ext4_ext_try_to_merge_up()
1855 (le16_to_cpu(path[1].p_hdr->eh_entries) > max_root)) in ext4_ext_try_to_merge_up()
1864 ext4_free_metadata_revoke_credits(inode->i_sb, 1))) in ext4_ext_try_to_merge_up()
1871 s = le16_to_cpu(path[1].p_hdr->eh_entries) * in ext4_ext_try_to_merge_up()
1879 (path[1].p_ext - EXT_FIRST_EXTENT(path[1].p_hdr)); in ext4_ext_try_to_merge_up()
1880 path[0].p_hdr->eh_max = cpu_to_le16(max_root); in ext4_ext_try_to_merge_up()
1898 unsigned int depth; in ext4_ext_try_to_merge() local
1901 depth = ext_depth(inode); in ext4_ext_try_to_merge()
1902 BUG_ON(path[depth].p_hdr == NULL); in ext4_ext_try_to_merge()
1903 eh = path[depth].p_hdr; in ext4_ext_try_to_merge()
1906 merge_done = ext4_ext_try_to_merge_right(inode, path, ex - 1); in ext4_ext_try_to_merge()
1928 unsigned int depth, len1; in ext4_ext_check_overlap() local
1931 b1 = le32_to_cpu(newext->ee_block); in ext4_ext_check_overlap()
1933 depth = ext_depth(inode); in ext4_ext_check_overlap()
1934 if (!path[depth].p_ext) in ext4_ext_check_overlap()
1936 b2 = EXT4_LBLK_CMASK(sbi, le32_to_cpu(path[depth].p_ext->ee_block)); in ext4_ext_check_overlap()
1951 len1 = EXT_MAX_BLOCKS - b1; in ext4_ext_check_overlap()
1952 newext->ee_len = cpu_to_le16(len1); in ext4_ext_check_overlap()
1958 newext->ee_len = cpu_to_le16(b2 - b1); in ext4_ext_check_overlap()
1969 * creating new leaf in the no-space case.
1980 int depth, len, err; in ext4_ext_insert_extent() local
1988 return -EFSCORRUPTED; in ext4_ext_insert_extent()
1990 depth = ext_depth(inode); in ext4_ext_insert_extent()
1991 ex = path[depth].p_ext; in ext4_ext_insert_extent()
1992 eh = path[depth].p_hdr; in ext4_ext_insert_extent()
1993 if (unlikely(path[depth].p_hdr == NULL)) { in ext4_ext_insert_extent()
1994 EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth); in ext4_ext_insert_extent()
1995 return -EFSCORRUPTED; in ext4_ext_insert_extent()
2009 (le32_to_cpu(ex->ee_block) + in ext4_ext_insert_extent()
2011 le32_to_cpu(newext->ee_block))) { in ext4_ext_insert_extent()
2015 (le32_to_cpu(newext->ee_block) + in ext4_ext_insert_extent()
2017 le32_to_cpu(ex->ee_block))) in ext4_ext_insert_extent()
2018 ex -= 1; in ext4_ext_insert_extent()
2026 le32_to_cpu(ex->ee_block), in ext4_ext_insert_extent()
2031 path + depth); in ext4_ext_insert_extent()
2035 ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) in ext4_ext_insert_extent()
2039 eh = path[depth].p_hdr; in ext4_ext_insert_extent()
2049 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2052 le32_to_cpu(ex->ee_block), in ext4_ext_insert_extent()
2057 path + depth); in ext4_ext_insert_extent()
2062 ex->ee_block = newext->ee_block; in ext4_ext_insert_extent()
2064 ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) in ext4_ext_insert_extent()
2068 eh = path[depth].p_hdr; in ext4_ext_insert_extent()
2074 depth = ext_depth(inode); in ext4_ext_insert_extent()
2075 eh = path[depth].p_hdr; in ext4_ext_insert_extent()
2076 if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max)) in ext4_ext_insert_extent()
2082 if (le32_to_cpu(newext->ee_block) > le32_to_cpu(fex->ee_block)) in ext4_ext_insert_extent()
2085 ext_debug(inode, "next leaf block - %u\n", next); in ext4_ext_insert_extent()
2090 BUG_ON(npath->p_depth != path->p_depth); in ext4_ext_insert_extent()
2091 eh = npath[depth].p_hdr; in ext4_ext_insert_extent()
2092 if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max)) { in ext4_ext_insert_extent()
2094 le16_to_cpu(eh->eh_entries)); in ext4_ext_insert_extent()
2099 le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max)); in ext4_ext_insert_extent()
2113 depth = ext_depth(inode); in ext4_ext_insert_extent()
2114 eh = path[depth].p_hdr; in ext4_ext_insert_extent()
2117 nearex = path[depth].p_ext; in ext4_ext_insert_extent()
2119 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_insert_extent()
2126 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2132 if (le32_to_cpu(newext->ee_block) in ext4_ext_insert_extent()
2133 > le32_to_cpu(nearex->ee_block)) { in ext4_ext_insert_extent()
2137 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2145 BUG_ON(newext->ee_block == nearex->ee_block); in ext4_ext_insert_extent()
2148 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2154 len = EXT_LAST_EXTENT(eh) - nearex + 1; in ext4_ext_insert_extent()
2158 le32_to_cpu(newext->ee_block), in ext4_ext_insert_extent()
2168 le16_add_cpu(&eh->eh_entries, 1); in ext4_ext_insert_extent()
2169 path[depth].p_ext = nearex; in ext4_ext_insert_extent()
2170 nearex->ee_block = newext->ee_block; in ext4_ext_insert_extent()
2172 nearex->ee_len = newext->ee_len; in ext4_ext_insert_extent()
2185 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_ext_insert_extent()
2197 ext4_lblk_t next, end = block + num - 1; in ext4_fill_es_cache_info()
2199 unsigned char blksize_bits = inode->i_sb->s_blocksize_bits; in ext4_fill_es_cache_info()
2240 * ext4_ext_determine_hole - determine hole around given block
2256 int depth = ext_depth(inode); in ext4_ext_determine_hole() local
2260 ex = path[depth].p_ext; in ext4_ext_determine_hole()
2262 /* there is no extent yet, so gap is [0;-] */ in ext4_ext_determine_hole()
2265 } else if (*lblk < le32_to_cpu(ex->ee_block)) { in ext4_ext_determine_hole()
2266 len = le32_to_cpu(ex->ee_block) - *lblk; in ext4_ext_determine_hole()
2267 } else if (*lblk >= le32_to_cpu(ex->ee_block) in ext4_ext_determine_hole()
2271 *lblk = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_determine_hole()
2274 len = next - *lblk; in ext4_ext_determine_hole()
2293 hole_start + hole_len - 1, &es); in ext4_ext_put_gap_in_cache()
2298 hole_len = min(es.es_lblk - hole_start, hole_len); in ext4_ext_put_gap_in_cache()
2300 ext_debug(inode, " -> %u:%u\n", hole_start, hole_len); in ext4_ext_put_gap_in_cache()
2310 struct ext4_ext_path *path, int depth) in ext4_ext_rm_idx() argument
2316 depth--; in ext4_ext_rm_idx()
2317 path = path + depth; in ext4_ext_rm_idx()
2318 leaf = ext4_idx_pblock(path->p_idx); in ext4_ext_rm_idx()
2319 if (unlikely(path->p_hdr->eh_entries == 0)) { in ext4_ext_rm_idx()
2320 EXT4_ERROR_INODE(inode, "path->p_hdr->eh_entries == 0"); in ext4_ext_rm_idx()
2321 return -EFSCORRUPTED; in ext4_ext_rm_idx()
2327 if (path->p_idx != EXT_LAST_INDEX(path->p_hdr)) { in ext4_ext_rm_idx()
2328 int len = EXT_LAST_INDEX(path->p_hdr) - path->p_idx; in ext4_ext_rm_idx()
2330 memmove(path->p_idx, path->p_idx + 1, len); in ext4_ext_rm_idx()
2333 le16_add_cpu(&path->p_hdr->eh_entries, -1); in ext4_ext_rm_idx()
2343 while (--depth >= 0) { in ext4_ext_rm_idx()
2344 if (path->p_idx != EXT_FIRST_INDEX(path->p_hdr)) in ext4_ext_rm_idx()
2346 path--; in ext4_ext_rm_idx()
2350 path->p_idx->ei_block = (path+1)->p_idx->ei_block; in ext4_ext_rm_idx()
2369 int depth = ext_depth(inode); in ext4_ext_calc_credits_for_single_extent() local
2373 if (le16_to_cpu(path[depth].p_hdr->eh_entries) in ext4_ext_calc_credits_for_single_extent()
2374 < le16_to_cpu(path[depth].p_hdr->eh_max)) { in ext4_ext_calc_credits_for_single_extent()
2385 ret = 2 + EXT4_META_TRANS_BLOCKS(inode->i_sb); in ext4_ext_calc_credits_for_single_extent()
2405 int depth; in ext4_ext_index_trans_blocks() local
2411 depth = ext_depth(inode); in ext4_ext_index_trans_blocks()
2414 index = depth * 2; in ext4_ext_index_trans_blocks()
2416 index = depth * 3; in ext4_ext_index_trans_blocks()
2423 if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode) || in get_default_free_blocks_flags()
2432 * ext4_rereserve_cluster - increment the reserved cluster count when
2435 * @inode - file containing the cluster
2436 * @lblk - logical block in cluster to be reserved
2448 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_rereserve_cluster()
2453 spin_lock(&ei->i_block_reservation_lock); in ext4_rereserve_cluster()
2454 ei->i_reserved_data_blocks++; in ext4_rereserve_cluster()
2455 percpu_counter_add(&sbi->s_dirtyclusters_counter, 1); in ext4_rereserve_cluster()
2456 spin_unlock(&ei->i_block_reservation_lock); in ext4_rereserve_cluster()
2458 percpu_counter_add(&sbi->s_freeclusters_counter, 1); in ext4_rereserve_cluster()
2467 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_remove_blocks()
2474 if (from < le32_to_cpu(ex->ee_block) || in ext4_remove_blocks()
2475 to != le32_to_cpu(ex->ee_block) + ee_len - 1) { in ext4_remove_blocks()
2476 ext4_error(sbi->s_sb, in ext4_remove_blocks()
2477 "strange request: removal(2) %u-%u from %u:%u", in ext4_remove_blocks()
2478 from, to, le32_to_cpu(ex->ee_block), ee_len); in ext4_remove_blocks()
2483 spin_lock(&sbi->s_ext_stats_lock); in ext4_remove_blocks()
2484 sbi->s_ext_blocks += ee_len; in ext4_remove_blocks()
2485 sbi->s_ext_extents++; in ext4_remove_blocks()
2486 if (ee_len < sbi->s_ext_min) in ext4_remove_blocks()
2487 sbi->s_ext_min = ee_len; in ext4_remove_blocks()
2488 if (ee_len > sbi->s_ext_max) in ext4_remove_blocks()
2489 sbi->s_ext_max = ee_len; in ext4_remove_blocks()
2490 if (ext_depth(inode) > sbi->s_depth_max) in ext4_remove_blocks()
2491 sbi->s_depth_max = ext_depth(inode); in ext4_remove_blocks()
2492 spin_unlock(&sbi->s_ext_stats_lock); in ext4_remove_blocks()
2501 last_pblk = ext4_ext_pblock(ex) + ee_len - 1; in ext4_remove_blocks()
2503 if (partial->state != initial && in ext4_remove_blocks()
2504 partial->pclu != EXT4_B2C(sbi, last_pblk)) { in ext4_remove_blocks()
2505 if (partial->state == tofree) { in ext4_remove_blocks()
2507 if (ext4_is_pending(inode, partial->lblk)) in ext4_remove_blocks()
2510 EXT4_C2B(sbi, partial->pclu), in ext4_remove_blocks()
2511 sbi->s_cluster_ratio, flags); in ext4_remove_blocks()
2513 ext4_rereserve_cluster(inode, partial->lblk); in ext4_remove_blocks()
2515 partial->state = initial; in ext4_remove_blocks()
2518 num = le32_to_cpu(ex->ee_block) + ee_len - from; in ext4_remove_blocks()
2519 pblk = ext4_ext_pblock(ex) + ee_len - num; in ext4_remove_blocks()
2530 if ((EXT4_LBLK_COFF(sbi, to) != sbi->s_cluster_ratio - 1) && in ext4_remove_blocks()
2532 (partial->state != nofree)) { in ext4_remove_blocks()
2537 sbi->s_cluster_ratio, flags); in ext4_remove_blocks()
2540 partial->state = initial; in ext4_remove_blocks()
2556 if (partial->state != initial && partial->pclu != EXT4_B2C(sbi, pblk)) in ext4_remove_blocks()
2557 partial->state = initial; in ext4_remove_blocks()
2566 * cluster - we're either done freeing or the beginning of the in ext4_remove_blocks()
2570 if (partial->state == initial) { in ext4_remove_blocks()
2571 partial->pclu = EXT4_B2C(sbi, pblk); in ext4_remove_blocks()
2572 partial->lblk = from; in ext4_remove_blocks()
2573 partial->state = tofree; in ext4_remove_blocks()
2576 partial->state = initial; in ext4_remove_blocks()
2603 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_rm_leaf()
2605 int depth = ext_depth(inode), credits, revoke_credits; in ext4_ext_rm_leaf() local
2617 if (!path[depth].p_hdr) in ext4_ext_rm_leaf()
2618 path[depth].p_hdr = ext_block_hdr(path[depth].p_bh); in ext4_ext_rm_leaf()
2619 eh = path[depth].p_hdr; in ext4_ext_rm_leaf()
2620 if (unlikely(path[depth].p_hdr == NULL)) { in ext4_ext_rm_leaf()
2621 EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth); in ext4_ext_rm_leaf()
2622 return -EFSCORRUPTED; in ext4_ext_rm_leaf()
2625 ex = path[depth].p_ext; in ext4_ext_rm_leaf()
2629 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2644 path[depth].p_ext = ex; in ext4_ext_rm_leaf()
2647 b = ex_ee_block+ex_ee_len - 1 < end ? in ext4_ext_rm_leaf()
2648 ex_ee_block+ex_ee_len - 1 : end; in ext4_ext_rm_leaf()
2661 if (sbi->s_cluster_ratio > 1) { in ext4_ext_rm_leaf()
2663 partial->pclu = EXT4_B2C(sbi, pblk); in ext4_ext_rm_leaf()
2664 partial->state = nofree; in ext4_ext_rm_leaf()
2666 ex--; in ext4_ext_rm_leaf()
2667 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2670 } else if (b != ex_ee_block + ex_ee_len - 1) { in ext4_ext_rm_leaf()
2675 ex_ee_block + ex_ee_len - 1); in ext4_ext_rm_leaf()
2676 err = -EFSCORRUPTED; in ext4_ext_rm_leaf()
2680 num = a - ex_ee_block; in ext4_ext_rm_leaf()
2691 credits = 7 + 2*(ex_ee_len/EXT4_BLOCKS_PER_GROUP(inode->i_sb)); in ext4_ext_rm_leaf()
2696 credits += EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb); in ext4_ext_rm_leaf()
2703 ext4_free_metadata_revoke_credits(inode->i_sb, in ext4_ext_rm_leaf()
2705 ext4_free_data_revoke_credits(inode, b - a + 1); in ext4_ext_rm_leaf()
2711 err = -EAGAIN; in ext4_ext_rm_leaf()
2715 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_rm_leaf()
2727 ex->ee_len = cpu_to_le16(num); in ext4_ext_rm_leaf()
2739 if (end != EXT_MAX_BLOCKS - 1) { in ext4_ext_rm_leaf()
2745 memmove(ex, ex+1, (EXT_LAST_EXTENT(eh) - ex) * in ext4_ext_rm_leaf()
2752 le16_add_cpu(&eh->eh_entries, -1); in ext4_ext_rm_leaf()
2755 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_rm_leaf()
2761 ex--; in ext4_ext_rm_leaf()
2762 ex_ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_rm_leaf()
2766 if (correct_index && eh->eh_entries) in ext4_ext_rm_leaf()
2776 if (partial->state == tofree && ex >= EXT_FIRST_EXTENT(eh)) { in ext4_ext_rm_leaf()
2777 pblk = ext4_ext_pblock(ex) + ex_ee_len - 1; in ext4_ext_rm_leaf()
2778 if (partial->pclu != EXT4_B2C(sbi, pblk)) { in ext4_ext_rm_leaf()
2781 if (ext4_is_pending(inode, partial->lblk)) in ext4_ext_rm_leaf()
2784 EXT4_C2B(sbi, partial->pclu), in ext4_ext_rm_leaf()
2785 sbi->s_cluster_ratio, flags); in ext4_ext_rm_leaf()
2787 ext4_rereserve_cluster(inode, partial->lblk); in ext4_ext_rm_leaf()
2789 partial->state = initial; in ext4_ext_rm_leaf()
2794 if (err == 0 && eh->eh_entries == 0 && path[depth].p_bh != NULL) in ext4_ext_rm_leaf()
2795 err = ext4_ext_rm_idx(handle, inode, path, depth); in ext4_ext_rm_leaf()
2808 BUG_ON(path->p_idx == NULL); in ext4_ext_more_to_rm()
2810 if (path->p_idx < EXT_FIRST_INDEX(path->p_hdr)) in ext4_ext_more_to_rm()
2817 if (le16_to_cpu(path->p_hdr->eh_entries) == path->p_block) in ext4_ext_more_to_rm()
2825 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_remove_space()
2826 int depth = ext_depth(inode); in ext4_ext_remove_space() local
2840 depth + 1, in ext4_ext_remove_space()
2841 ext4_free_metadata_revoke_credits(inode->i_sb, depth)); in ext4_ext_remove_space()
2846 trace_ext4_ext_remove_space(inode, start, end, depth); in ext4_ext_remove_space()
2855 if (end < EXT_MAX_BLOCKS - 1) { in ext4_ext_remove_space()
2867 depth = ext_depth(inode); in ext4_ext_remove_space()
2869 ex = path[depth].p_ext; in ext4_ext_remove_space()
2871 if (depth) { in ext4_ext_remove_space()
2874 depth); in ext4_ext_remove_space()
2875 err = -EFSCORRUPTED; in ext4_ext_remove_space()
2880 ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_remove_space()
2881 ex_end = ee_block + ext4_ext_get_actual_len(ex) - 1; in ext4_ext_remove_space()
2896 if (sbi->s_cluster_ratio > 1) { in ext4_ext_remove_space()
2897 pblk = ext4_ext_pblock(ex) + end - ee_block + 1; in ext4_ext_remove_space()
2913 } else if (sbi->s_cluster_ratio > 1 && end >= ex_end && in ext4_ext_remove_space()
2938 * after i_size and walking into the tree depth-wise. in ext4_ext_remove_space()
2940 depth = ext_depth(inode); in ext4_ext_remove_space()
2942 int k = i = depth; in ext4_ext_remove_space()
2943 while (--k > 0) in ext4_ext_remove_space()
2945 le16_to_cpu(path[k].p_hdr->eh_entries)+1; in ext4_ext_remove_space()
2947 path = kcalloc(depth + 1, sizeof(struct ext4_ext_path), in ext4_ext_remove_space()
2951 return -ENOMEM; in ext4_ext_remove_space()
2953 path[0].p_maxdepth = path[0].p_depth = depth; in ext4_ext_remove_space()
2957 if (ext4_ext_check(inode, path[0].p_hdr, depth, 0)) { in ext4_ext_remove_space()
2958 err = -EFSCORRUPTED; in ext4_ext_remove_space()
2965 if (i == depth) { in ext4_ext_remove_space()
2972 i--; in ext4_ext_remove_space()
2985 path[i].p_block = le16_to_cpu(path[i].p_hdr->eh_entries)+1; in ext4_ext_remove_space()
2988 le16_to_cpu(path[i].p_hdr->eh_entries)); in ext4_ext_remove_space()
2991 path[i].p_idx--; in ext4_ext_remove_space()
2994 ext_debug(inode, "level %d - index, first 0x%p, cur 0x%p\n", in ext4_ext_remove_space()
3004 depth - i - 1, in ext4_ext_remove_space()
3012 * Should be a no-op if we did IO above. */ in ext4_ext_remove_space()
3014 if (WARN_ON(i + 1 > depth)) { in ext4_ext_remove_space()
3015 err = -EFSCORRUPTED; in ext4_ext_remove_space()
3022 path[i].p_block = le16_to_cpu(path[i].p_hdr->eh_entries); in ext4_ext_remove_space()
3026 if (path[i].p_hdr->eh_entries == 0 && i > 0) { in ext4_ext_remove_space()
3035 i--; in ext4_ext_remove_space()
3040 trace_ext4_ext_remove_space_done(inode, start, end, depth, &partial, in ext4_ext_remove_space()
3041 path->p_hdr->eh_entries); in ext4_ext_remove_space()
3054 sbi->s_cluster_ratio, flags); in ext4_ext_remove_space()
3061 if (path->p_hdr->eh_entries == 0) { in ext4_ext_remove_space()
3068 ext_inode_hdr(inode)->eh_depth = 0; in ext4_ext_remove_space()
3069 ext_inode_hdr(inode)->eh_max = in ext4_ext_remove_space()
3078 if (err == -EAGAIN) in ext4_ext_remove_space()
3096 printk(KERN_INFO "EXT4-fs: file extents enabled" in ext4_ext_init()
3109 spin_lock_init(&EXT4_SB(sb)->s_ext_stats_lock); in ext4_ext_init()
3110 EXT4_SB(sb)->s_ext_min = 1 << 30; in ext4_ext_init()
3111 EXT4_SB(sb)->s_ext_max = 0; in ext4_ext_init()
3125 if (EXT4_SB(sb)->s_ext_blocks && EXT4_SB(sb)->s_ext_extents) { in ext4_ext_release()
3127 printk(KERN_ERR "EXT4-fs: %lu blocks in %lu extents (%lu ave)\n", in ext4_ext_release()
3128 sbi->s_ext_blocks, sbi->s_ext_extents, in ext4_ext_release()
3129 sbi->s_ext_blocks / sbi->s_ext_extents); in ext4_ext_release()
3130 printk(KERN_ERR "EXT4-fs: extents: %lu min, %lu max, max depth %lu\n", in ext4_ext_release()
3131 sbi->s_ext_min, sbi->s_ext_max, sbi->s_depth_max); in ext4_ext_release()
3142 ee_block = le32_to_cpu(ex->ee_block); in ext4_zeroout_es()
3153 /* FIXME!! we need to try to merge to left or right after zero-out */
3161 return ext4_issue_zeroout(inode, le32_to_cpu(ex->ee_block), ee_pblock, in ext4_ext_zeroout()
3198 unsigned int ee_len, depth; in ext4_split_extent_at() local
3208 depth = ext_depth(inode); in ext4_split_extent_at()
3209 ex = path[depth].p_ext; in ext4_split_extent_at()
3210 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_extent_at()
3212 newblock = split - ee_block + ext4_ext_pblock(ex); in ext4_split_extent_at()
3220 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_split_extent_at()
3238 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3244 ex->ee_len = cpu_to_le16(split - ee_block); in ext4_split_extent_at()
3252 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_split_extent_at()
3257 ex2->ee_block = cpu_to_le32(split); in ext4_split_extent_at()
3258 ex2->ee_len = cpu_to_le16(ee_len - (split - ee_block)); in ext4_split_extent_at()
3264 if (err != -ENOSPC && err != -EDQUOT) in ext4_split_extent_at()
3270 * guarantees that ext4_find_extent() will not return -ENOMEM, in ext4_split_extent_at()
3271 * otherwise -ENOMEM will cause a retry in do_writepages(), and a in ext4_split_extent_at()
3282 depth = ext_depth(inode); in ext4_split_extent_at()
3283 ex = path[depth].p_ext; in ext4_split_extent_at()
3289 zero_ex.ee_block = ex2->ee_block; in ext4_split_extent_at()
3296 zero_ex.ee_block = ex->ee_block; in ext4_split_extent_at()
3313 ex->ee_len = cpu_to_le16(ee_len); in ext4_split_extent_at()
3315 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3329 ex->ee_len = orig_ex.ee_len; in ext4_split_extent_at()
3332 * and err is a non-zero error code. in ext4_split_extent_at()
3334 ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_split_extent_at()
3362 unsigned int ee_len, depth; in ext4_split_extent() local
3366 int allocated = map->m_len; in ext4_split_extent()
3368 depth = ext_depth(inode); in ext4_split_extent()
3369 ex = path[depth].p_ext; in ext4_split_extent()
3370 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_extent()
3374 if (map->m_lblk + map->m_len < ee_block + ee_len) { in ext4_split_extent()
3383 map->m_lblk + map->m_len, split_flag1, flags1); in ext4_split_extent()
3387 allocated = ee_len - (map->m_lblk - ee_block); in ext4_split_extent()
3393 path = ext4_find_extent(inode, map->m_lblk, ppath, flags); in ext4_split_extent()
3396 depth = ext_depth(inode); in ext4_split_extent()
3397 ex = path[depth].p_ext; in ext4_split_extent()
3400 (unsigned long) map->m_lblk); in ext4_split_extent()
3401 return -EFSCORRUPTED; in ext4_split_extent()
3406 if (map->m_lblk >= ee_block) { in ext4_split_extent()
3414 map->m_lblk, split_flag1, flags); in ext4_split_extent()
3427 * extent into multiple extents (up to three - one initialized and two
3434 * Pre-conditions:
3435 * - The extent pointed to by 'path' is unwritten.
3436 * - The extent pointed to by 'path' contains a superset
3437 * of the logical span [map->m_lblk, map->m_lblk + map->m_len).
3439 * Post-conditions on success:
3440 * - the returned value is the number of blocks beyond map->l_lblk
3442 * It is guaranteed to be >= map->m_len.
3457 unsigned int ee_len, depth, map_len = map->m_len; in ext4_ext_convert_to_initialized() local
3463 (unsigned long long)map->m_lblk, map_len); in ext4_ext_convert_to_initialized()
3465 sbi = EXT4_SB(inode->i_sb); in ext4_ext_convert_to_initialized()
3466 eof_block = (EXT4_I(inode)->i_disksize + inode->i_sb->s_blocksize - 1) in ext4_ext_convert_to_initialized()
3467 >> inode->i_sb->s_blocksize_bits; in ext4_ext_convert_to_initialized()
3468 if (eof_block < map->m_lblk + map_len) in ext4_ext_convert_to_initialized()
3469 eof_block = map->m_lblk + map_len; in ext4_ext_convert_to_initialized()
3471 depth = ext_depth(inode); in ext4_ext_convert_to_initialized()
3472 eh = path[depth].p_hdr; in ext4_ext_convert_to_initialized()
3473 ex = path[depth].p_ext; in ext4_ext_convert_to_initialized()
3474 ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_convert_to_initialized()
3481 /* Pre-conditions */ in ext4_ext_convert_to_initialized()
3483 BUG_ON(!in_range(map->m_lblk, ee_block, ee_len)); in ext4_ext_convert_to_initialized()
3494 * - L1: we do not deal with writes covering the whole extent. in ext4_ext_convert_to_initialized()
3497 * - L2: we only attempt to merge with an extent stored in the in ext4_ext_convert_to_initialized()
3500 if ((map->m_lblk == ee_block) && in ext4_ext_convert_to_initialized()
3508 abut_ex = ex - 1; in ext4_ext_convert_to_initialized()
3509 prev_lblk = le32_to_cpu(abut_ex->ee_block); in ext4_ext_convert_to_initialized()
3517 * - C1: abut_ex is initialized, in ext4_ext_convert_to_initialized()
3518 * - C2: abut_ex is logically abutting ex, in ext4_ext_convert_to_initialized()
3519 * - C3: abut_ex is physically abutting ex, in ext4_ext_convert_to_initialized()
3520 * - C4: abut_ex can receive the additional blocks without in ext4_ext_convert_to_initialized()
3526 (prev_len < (EXT_INIT_MAX_LEN - map_len))) { /*C4*/ in ext4_ext_convert_to_initialized()
3527 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3535 ex->ee_block = cpu_to_le32(ee_block + map_len); in ext4_ext_convert_to_initialized()
3537 ex->ee_len = cpu_to_le16(ee_len - map_len); in ext4_ext_convert_to_initialized()
3541 abut_ex->ee_len = cpu_to_le16(prev_len + map_len); in ext4_ext_convert_to_initialized()
3546 } else if (((map->m_lblk + map_len) == (ee_block + ee_len)) && in ext4_ext_convert_to_initialized()
3555 next_lblk = le32_to_cpu(abut_ex->ee_block); in ext4_ext_convert_to_initialized()
3563 * - C1: abut_ex is initialized, in ext4_ext_convert_to_initialized()
3564 * - C2: abut_ex is logically abutting ex, in ext4_ext_convert_to_initialized()
3565 * - C3: abut_ex is physically abutting ex, in ext4_ext_convert_to_initialized()
3566 * - C4: abut_ex can receive the additional blocks without in ext4_ext_convert_to_initialized()
3570 ((map->m_lblk + map_len) == next_lblk) && /*C2*/ in ext4_ext_convert_to_initialized()
3572 (next_len < (EXT_INIT_MAX_LEN - map_len))) { /*C4*/ in ext4_ext_convert_to_initialized()
3573 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3581 abut_ex->ee_block = cpu_to_le32(next_lblk - map_len); in ext4_ext_convert_to_initialized()
3582 ext4_ext_store_pblock(abut_ex, next_pblk - map_len); in ext4_ext_convert_to_initialized()
3583 ex->ee_len = cpu_to_le16(ee_len - map_len); in ext4_ext_convert_to_initialized()
3587 abut_ex->ee_len = cpu_to_le16(next_len + map_len); in ext4_ext_convert_to_initialized()
3595 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_convert_to_initialized()
3598 path[depth].p_ext = abut_ex; in ext4_ext_convert_to_initialized()
3601 allocated = ee_len - (map->m_lblk - ee_block); in ext4_ext_convert_to_initialized()
3603 WARN_ON(map->m_lblk < ee_block); in ext4_ext_convert_to_initialized()
3611 max_zeroout = sbi->s_extent_max_zeroout_kb >> in ext4_ext_convert_to_initialized()
3612 (inode->i_sb->s_blocksize_bits - 10); in ext4_ext_convert_to_initialized()
3625 split_map.m_lblk = map->m_lblk; in ext4_ext_convert_to_initialized()
3626 split_map.m_len = map->m_len; in ext4_ext_convert_to_initialized()
3635 cpu_to_le16(allocated - split_map.m_len); in ext4_ext_convert_to_initialized()
3638 split_map.m_len - ee_block); in ext4_ext_convert_to_initialized()
3644 if (split_map.m_lblk - ee_block + split_map.m_len < in ext4_ext_convert_to_initialized()
3648 zero_ex2.ee_block = ex->ee_block; in ext4_ext_convert_to_initialized()
3649 zero_ex2.ee_len = cpu_to_le16(split_map.m_lblk - in ext4_ext_convert_to_initialized()
3658 split_map.m_len += split_map.m_lblk - ee_block; in ext4_ext_convert_to_initialized()
3660 allocated = map->m_len; in ext4_ext_convert_to_initialized()
3691 * This works the same way in the case of initialized -> unwritten conversion.
3714 int split_flag = 0, depth; in ext4_split_convert_extents() local
3717 (unsigned long long)map->m_lblk, map->m_len); in ext4_split_convert_extents()
3719 eof_block = (EXT4_I(inode)->i_disksize + inode->i_sb->s_blocksize - 1) in ext4_split_convert_extents()
3720 >> inode->i_sb->s_blocksize_bits; in ext4_split_convert_extents()
3721 if (eof_block < map->m_lblk + map->m_len) in ext4_split_convert_extents()
3722 eof_block = map->m_lblk + map->m_len; in ext4_split_convert_extents()
3727 depth = ext_depth(inode); in ext4_split_convert_extents()
3728 ex = path[depth].p_ext; in ext4_split_convert_extents()
3729 ee_block = le32_to_cpu(ex->ee_block); in ext4_split_convert_extents()
3754 int depth; in ext4_convert_unwritten_extents_endio() local
3757 depth = ext_depth(inode); in ext4_convert_unwritten_extents_endio()
3758 ex = path[depth].p_ext; in ext4_convert_unwritten_extents_endio()
3759 ee_block = le32_to_cpu(ex->ee_block); in ext4_convert_unwritten_extents_endio()
3771 if (ee_block != map->m_lblk || ee_len > map->m_len) { in ext4_convert_unwritten_extents_endio()
3773 ext4_warning(inode->i_sb, "Inode (%ld) finished: extent logical block %llu," in ext4_convert_unwritten_extents_endio()
3775 inode->i_ino, (unsigned long long)ee_block, ee_len, in ext4_convert_unwritten_extents_endio()
3776 (unsigned long long)map->m_lblk, map->m_len); in ext4_convert_unwritten_extents_endio()
3782 path = ext4_find_extent(inode, map->m_lblk, ppath, 0); in ext4_convert_unwritten_extents_endio()
3785 depth = ext_depth(inode); in ext4_convert_unwritten_extents_endio()
3786 ex = path[depth].p_ext; in ext4_convert_unwritten_extents_endio()
3789 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_convert_unwritten_extents_endio()
3801 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in ext4_convert_unwritten_extents_endio()
3817 int depth; in convert_initialized_extent() local
3824 if (map->m_len > EXT_UNWRITTEN_MAX_LEN) in convert_initialized_extent()
3825 map->m_len = EXT_UNWRITTEN_MAX_LEN / 2; in convert_initialized_extent()
3827 depth = ext_depth(inode); in convert_initialized_extent()
3828 ex = path[depth].p_ext; in convert_initialized_extent()
3829 ee_block = le32_to_cpu(ex->ee_block); in convert_initialized_extent()
3835 if (ee_block != map->m_lblk || ee_len > map->m_len) { in convert_initialized_extent()
3840 path = ext4_find_extent(inode, map->m_lblk, ppath, 0); in convert_initialized_extent()
3843 depth = ext_depth(inode); in convert_initialized_extent()
3844 ex = path[depth].p_ext; in convert_initialized_extent()
3847 (unsigned long) map->m_lblk); in convert_initialized_extent()
3848 return -EFSCORRUPTED; in convert_initialized_extent()
3852 err = ext4_ext_get_access(handle, inode, path + depth); in convert_initialized_extent()
3864 err = ext4_ext_dirty(handle, inode, path + path->p_depth); in convert_initialized_extent()
3871 map->m_flags |= EXT4_MAP_UNWRITTEN; in convert_initialized_extent()
3872 if (*allocated > map->m_len) in convert_initialized_extent()
3873 *allocated = map->m_len; in convert_initialized_extent()
3874 map->m_len = *allocated; in convert_initialized_extent()
3888 (unsigned long long)map->m_lblk, map->m_len, flags, in ext4_ext_handle_unwritten_extents()
3916 map->m_len); in ext4_ext_handle_unwritten_extents()
3917 err = -EFSCORRUPTED; in ext4_ext_handle_unwritten_extents()
3920 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3938 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3951 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_handle_unwritten_extents()
3972 map->m_len); in ext4_ext_handle_unwritten_extents()
3973 err = -EFSCORRUPTED; in ext4_ext_handle_unwritten_extents()
3979 map->m_flags |= EXT4_MAP_NEW; in ext4_ext_handle_unwritten_extents()
3981 map->m_flags |= EXT4_MAP_MAPPED; in ext4_ext_handle_unwritten_extents()
3983 map->m_pblk = newblock; in ext4_ext_handle_unwritten_extents()
3984 if (allocated > map->m_len) in ext4_ext_handle_unwritten_extents()
3985 allocated = map->m_len; in ext4_ext_handle_unwritten_extents()
3986 map->m_len = allocated; in ext4_ext_handle_unwritten_extents()
3993 * get_implied_cluster_alloc - check to see if the requested
3997 * @map The requested lblk->pblk mapping
4007 * |--- cluster # N--|
4008 * |--- extent ---| |---- requested region ---|
4013 * |--------- cluster # N ----------------|
4014 * |--- requested region --| |------- extent ----|
4019 * |------------- cluster # N-------------|
4020 * |----- ex -----| |---- ex_right ----|
4021 * |------ requested region ------|
4024 * In each of the above cases, we need to set the map->m_pblk and
4025 * map->m_len so it corresponds to the return the extent labelled as
4027 * cluster EXT4_B2C(sbi, map->m_lblk). We will then return 1 to
4028 * signal to ext4_ext_map_blocks() that map->m_pblk should be treated
4039 ext4_lblk_t c_offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in get_implied_cluster_alloc()
4042 ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block); in get_implied_cluster_alloc()
4048 ex_cluster_end = EXT4_B2C(sbi, ee_block + ee_len - 1); in get_implied_cluster_alloc()
4051 rr_cluster_start = EXT4_B2C(sbi, map->m_lblk); in get_implied_cluster_alloc()
4056 ee_start += ee_len - 1; in get_implied_cluster_alloc()
4057 map->m_pblk = EXT4_PBLK_CMASK(sbi, ee_start) + c_offset; in get_implied_cluster_alloc()
4058 map->m_len = min(map->m_len, in get_implied_cluster_alloc()
4059 (unsigned) sbi->s_cluster_ratio - c_offset); in get_implied_cluster_alloc()
4063 * |--------- cluster # N-------------| in get_implied_cluster_alloc()
4064 * |------- extent ----| in get_implied_cluster_alloc()
4065 * |--- requested region ---| in get_implied_cluster_alloc()
4069 if (map->m_lblk < ee_block) in get_implied_cluster_alloc()
4070 map->m_len = min(map->m_len, ee_block - map->m_lblk); in get_implied_cluster_alloc()
4076 * |------------- cluster # N-------------| in get_implied_cluster_alloc()
4077 * |----- ex -----| |---- ex_right ----| in get_implied_cluster_alloc()
4078 * |------ requested region ------| in get_implied_cluster_alloc()
4081 if (map->m_lblk > ee_block) { in get_implied_cluster_alloc()
4083 map->m_len = min(map->m_len, next - map->m_lblk); in get_implied_cluster_alloc()
4100 * down_read(&EXT4_I(inode)->i_data_sem) if not allocating file system block
4101 * (ie, create is zero). Otherwise down_write(&EXT4_I(inode)->i_data_sem)
4104 * if create == 0 and these are pre-allocated blocks
4118 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_ext_map_blocks()
4120 int err = 0, depth, ret; in ext4_ext_map_blocks() local
4126 ext_debug(inode, "blocks %u/%u requested\n", map->m_lblk, map->m_len); in ext4_ext_map_blocks()
4127 trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags); in ext4_ext_map_blocks()
4130 path = ext4_find_extent(inode, map->m_lblk, NULL, 0); in ext4_ext_map_blocks()
4137 depth = ext_depth(inode); in ext4_ext_map_blocks()
4144 if (unlikely(path[depth].p_ext == NULL && depth != 0)) { in ext4_ext_map_blocks()
4146 "lblock: %lu, depth: %d pblock %lld", in ext4_ext_map_blocks()
4147 (unsigned long) map->m_lblk, depth, in ext4_ext_map_blocks()
4148 path[depth].p_block); in ext4_ext_map_blocks()
4149 err = -EFSCORRUPTED; in ext4_ext_map_blocks()
4153 ex = path[depth].p_ext; in ext4_ext_map_blocks()
4155 ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block); in ext4_ext_map_blocks()
4169 if (in_range(map->m_lblk, ee_block, ee_len)) { in ext4_ext_map_blocks()
4170 newblock = map->m_lblk - ee_block + ee_start; in ext4_ext_map_blocks()
4172 allocated = ee_len - (map->m_lblk - ee_block); in ext4_ext_map_blocks()
4173 ext_debug(inode, "%u fit into %u:%d -> %llu\n", in ext4_ext_map_blocks()
4174 map->m_lblk, ee_block, ee_len, newblock); in ext4_ext_map_blocks()
4186 map->m_flags |= EXT4_MAP_MAPPED; in ext4_ext_map_blocks()
4187 map->m_pblk = newblock; in ext4_ext_map_blocks()
4188 if (allocated > map->m_len) in ext4_ext_map_blocks()
4189 allocated = map->m_len; in ext4_ext_map_blocks()
4190 map->m_len = allocated; in ext4_ext_map_blocks()
4213 hole_start = map->m_lblk; in ext4_ext_map_blocks()
4221 /* Update hole_len to reflect hole size after map->m_lblk */ in ext4_ext_map_blocks()
4222 if (hole_start != map->m_lblk) in ext4_ext_map_blocks()
4223 hole_len -= map->m_lblk - hole_start; in ext4_ext_map_blocks()
4224 map->m_pblk = 0; in ext4_ext_map_blocks()
4225 map->m_len = min_t(unsigned int, map->m_len, hole_len); in ext4_ext_map_blocks()
4233 newex.ee_block = cpu_to_le32(map->m_lblk); in ext4_ext_map_blocks()
4234 cluster_offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in ext4_ext_map_blocks()
4241 get_implied_cluster_alloc(inode->i_sb, map, ex, path)) { in ext4_ext_map_blocks()
4242 ar.len = allocated = map->m_len; in ext4_ext_map_blocks()
4243 newblock = map->m_pblk; in ext4_ext_map_blocks()
4248 ar.lleft = map->m_lblk; in ext4_ext_map_blocks()
4252 ar.lright = map->m_lblk; in ext4_ext_map_blocks()
4259 if ((sbi->s_cluster_ratio > 1) && err && in ext4_ext_map_blocks()
4260 get_implied_cluster_alloc(inode->i_sb, map, &ex2, path)) { in ext4_ext_map_blocks()
4261 ar.len = allocated = map->m_len; in ext4_ext_map_blocks()
4262 newblock = map->m_pblk; in ext4_ext_map_blocks()
4272 if (map->m_len > EXT_INIT_MAX_LEN && in ext4_ext_map_blocks()
4274 map->m_len = EXT_INIT_MAX_LEN; in ext4_ext_map_blocks()
4275 else if (map->m_len > EXT_UNWRITTEN_MAX_LEN && in ext4_ext_map_blocks()
4277 map->m_len = EXT_UNWRITTEN_MAX_LEN; in ext4_ext_map_blocks()
4280 newex.ee_len = cpu_to_le16(map->m_len); in ext4_ext_map_blocks()
4285 allocated = map->m_len; in ext4_ext_map_blocks()
4289 ar.goal = ext4_ext_find_goal(inode, path, map->m_lblk); in ext4_ext_map_blocks()
4290 ar.logical = map->m_lblk; in ext4_ext_map_blocks()
4299 offset = EXT4_LBLK_COFF(sbi, map->m_lblk); in ext4_ext_map_blocks()
4301 ar.goal -= offset; in ext4_ext_map_blocks()
4302 ar.logical -= offset; in ext4_ext_map_blocks()
4303 if (S_ISREG(inode->i_mode)) in ext4_ext_map_blocks()
4306 /* disable in-core preallocation for non-regular files */ in ext4_ext_map_blocks()
4318 ar.len = EXT4_C2B(sbi, ar.len) - offset; in ext4_ext_map_blocks()
4332 map->m_flags |= EXT4_MAP_UNWRITTEN; in ext4_ext_map_blocks()
4361 if (test_opt(inode->i_sb, DELALLOC) && allocated_clusters) { in ext4_ext_map_blocks()
4374 * When allocating non-delayed allocated clusters in ext4_ext_map_blocks()
4384 lblk = EXT4_LBLK_CMASK(sbi, map->m_lblk); in ext4_ext_map_blocks()
4385 len = allocated_clusters << sbi->s_cluster_bits; in ext4_ext_map_blocks()
4401 map->m_flags |= (EXT4_MAP_NEW | EXT4_MAP_MAPPED); in ext4_ext_map_blocks()
4402 map->m_pblk = pblk; in ext4_ext_map_blocks()
4403 map->m_len = ar.len; in ext4_ext_map_blocks()
4404 allocated = map->m_len; in ext4_ext_map_blocks()
4417 struct super_block *sb = inode->i_sb; in ext4_ext_truncate()
4428 EXT4_I(inode)->i_disksize = inode->i_size; in ext4_ext_truncate()
4433 last_block = (inode->i_size + sb->s_blocksize - 1) in ext4_ext_truncate()
4437 EXT_MAX_BLOCKS - last_block); in ext4_ext_truncate()
4438 if (err == -ENOMEM) { in ext4_ext_truncate()
4446 err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1); in ext4_ext_truncate()
4447 if (err == -ENOMEM) { in ext4_ext_truncate()
4464 int depth = 0; in ext4_alloc_file_blocks() local
4484 depth = ext_depth(inode); in ext4_alloc_file_blocks()
4489 * Recalculate credits when extent tree depth changes. in ext4_alloc_file_blocks()
4491 if (depth != ext_depth(inode)) { in ext4_alloc_file_blocks()
4493 depth = ext_depth(inode); in ext4_alloc_file_blocks()
4506 inode->i_ino, map.m_lblk, in ext4_alloc_file_blocks()
4513 map.m_len = len = len - ret; in ext4_alloc_file_blocks()
4514 epos = (loff_t)map.m_lblk << inode->i_blkbits; in ext4_alloc_file_blocks()
4515 inode->i_ctime = current_time(inode); in ext4_alloc_file_blocks()
4520 inode->i_mtime = inode->i_ctime; in ext4_alloc_file_blocks()
4529 if (ret == -ENOSPC && in ext4_alloc_file_blocks()
4530 ext4_should_retry_alloc(inode->i_sb, &retries)) { in ext4_alloc_file_blocks()
4555 unsigned int blkbits = inode->i_blkbits; in ext4_zero_range()
4561 ret = ext4_force_commit(inode->i_sb); in ext4_zero_range()
4576 return -EINVAL; in ext4_zero_range()
4577 partial_begin = offset & ((1 << blkbits) - 1); in ext4_zero_range()
4578 partial_end = (offset + len) & ((1 << blkbits) - 1); in ext4_zero_range()
4585 max_blocks -= lblk; in ext4_zero_range()
4593 ret = -EOPNOTSUPP; in ext4_zero_range()
4598 (offset + len > inode->i_size || in ext4_zero_range()
4599 offset + len > EXT4_I(inode)->i_disksize)) { in ext4_zero_range()
4619 (round_up((offset + len), 1 << blkbits) - in ext4_zero_range()
4636 down_write(&EXT4_I(inode)->i_mmap_sem); in ext4_zero_range()
4640 up_write(&EXT4_I(inode)->i_mmap_sem); in ext4_zero_range()
4646 up_write(&EXT4_I(inode)->i_mmap_sem); in ext4_zero_range()
4650 truncate_pagecache_range(inode, start, end - 1); in ext4_zero_range()
4651 inode->i_mtime = inode->i_ctime = current_time(inode); in ext4_zero_range()
4655 up_write(&EXT4_I(inode)->i_mmap_sem); in ext4_zero_range()
4672 ext4_std_error(inode->i_sb, ret); in ext4_zero_range()
4676 inode->i_mtime = inode->i_ctime = current_time(inode); in ext4_zero_range()
4687 if (file->f_flags & O_SYNC) in ext4_zero_range()
4700 * For block-mapped files, posix_fallocate should fall back to the method
4712 unsigned int blkbits = inode->i_blkbits; in ext4_fallocate()
4716 * range since we would need to re-encrypt blocks with a in ext4_fallocate()
4722 return -EOPNOTSUPP; in ext4_fallocate()
4728 return -EOPNOTSUPP; in ext4_fallocate()
4764 * We only support preallocation for extent-based files only in ext4_fallocate()
4767 ret = -EOPNOTSUPP; in ext4_fallocate()
4772 (offset + len > inode->i_size || in ext4_fallocate()
4773 offset + len > EXT4_I(inode)->i_disksize)) { in ext4_fallocate()
4791 if (file->f_flags & O_SYNC && EXT4_SB(inode->i_sb)->s_journal) { in ext4_fallocate()
4792 ret = ext4_fc_commit(EXT4_SB(inode->i_sb)->s_journal, in ext4_fallocate()
4793 EXT4_I(inode)->i_sync_tid); in ext4_fallocate()
4818 unsigned int blkbits = inode->i_blkbits; in ext4_convert_unwritten_extents()
4832 map.m_len = (max_blocks -= ret); in ext4_convert_unwritten_extents()
4844 ext4_warning(inode->i_sb, in ext4_convert_unwritten_extents()
4847 inode->i_ino, map.m_lblk, in ext4_convert_unwritten_extents()
4879 list_for_each_entry(io_end_vec, &io_end->list_vec, list) { in ext4_convert_unwritten_io_end_vec()
4880 ret = ext4_convert_unwritten_extents(handle, io_end->inode, in ext4_convert_unwritten_io_end_vec()
4881 io_end_vec->offset, in ext4_convert_unwritten_io_end_vec()
4882 io_end_vec->size); in ext4_convert_unwritten_io_end_vec()
4897 int blockbits = inode->i_sb->s_blocksize_bits; in ext4_iomap_xattr_fiemap()
4901 /* in-inode? */ in ext4_iomap_xattr_fiemap()
4909 physical = (__u64)iloc.bh->b_blocknr << blockbits; in ext4_iomap_xattr_fiemap()
4911 EXT4_I(inode)->i_extra_isize; in ext4_iomap_xattr_fiemap()
4913 length = EXT4_SB(inode->i_sb)->s_inode_size - offset; in ext4_iomap_xattr_fiemap()
4916 } else if (EXT4_I(inode)->i_file_acl) { /* external block */ in ext4_iomap_xattr_fiemap()
4917 physical = (__u64)EXT4_I(inode)->i_file_acl << blockbits; in ext4_iomap_xattr_fiemap()
4918 length = inode->i_sb->s_blocksize; in ext4_iomap_xattr_fiemap()
4921 /* no in-inode or external block for xattr, so return -ENOENT */ in ext4_iomap_xattr_fiemap()
4922 error = -ENOENT; in ext4_iomap_xattr_fiemap()
4926 iomap->addr = physical; in ext4_iomap_xattr_fiemap()
4927 iomap->offset = 0; in ext4_iomap_xattr_fiemap()
4928 iomap->length = length; in ext4_iomap_xattr_fiemap()
4929 iomap->type = iomap_type; in ext4_iomap_xattr_fiemap()
4930 iomap->flags = 0; in ext4_iomap_xattr_fiemap()
4942 if (error == 0 && (offset >= iomap->length)) in ext4_iomap_xattr_begin()
4943 error = -ENOENT; in ext4_iomap_xattr_begin()
4956 maxbytes = inode->i_sb->s_maxbytes; in ext4_fiemap_check_ranges()
4958 maxbytes = EXT4_SB(inode->i_sb)->s_bitmap_maxbytes; in ext4_fiemap_check_ranges()
4961 return -EINVAL; in ext4_fiemap_check_ranges()
4963 return -EFBIG; in ext4_fiemap_check_ranges()
4968 if (*len > maxbytes || (maxbytes - *len) < start) in ext4_fiemap_check_ranges()
4969 *len = maxbytes - start; in ext4_fiemap_check_ranges()
4978 if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { in ext4_fiemap()
4982 fieinfo->fi_flags &= ~FIEMAP_FLAG_CACHE; in ext4_fiemap()
4994 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { in ext4_fiemap()
4995 fieinfo->fi_flags &= ~FIEMAP_FLAG_XATTR; in ext4_fiemap()
5013 down_read(&EXT4_I(inode)->xattr_sem); in ext4_get_es_cache()
5015 up_read(&EXT4_I(inode)->xattr_sem); in ext4_get_es_cache()
5020 if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { in ext4_get_es_cache()
5024 fieinfo->fi_flags &= ~FIEMAP_FLAG_CACHE; in ext4_get_es_cache()
5035 start_blk = start >> inode->i_sb->s_blocksize_bits; in ext4_get_es_cache()
5036 last_blk = (start + len - 1) >> inode->i_sb->s_blocksize_bits; in ext4_get_es_cache()
5038 last_blk = EXT_MAX_BLOCKS-1; in ext4_get_es_cache()
5039 len_blks = ((ext4_lblk_t) last_blk) - start_blk + 1; in ext4_get_es_cache()
5050 * Shift the extents of a path structure lying between path[depth].p_ext
5051 * and EXT_LAST_EXTENT(path[depth].p_hdr), by @shift blocks. @SHIFT tells
5059 int depth, err = 0; in ext4_ext_shift_path_extents() local
5063 depth = path->p_depth; in ext4_ext_shift_path_extents()
5065 while (depth >= 0) { in ext4_ext_shift_path_extents()
5066 if (depth == path->p_depth) { in ext4_ext_shift_path_extents()
5067 ex_start = path[depth].p_ext; in ext4_ext_shift_path_extents()
5069 return -EFSCORRUPTED; in ext4_ext_shift_path_extents()
5071 ex_last = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_path_extents()
5074 if (ex_start == EXT_FIRST_EXTENT(path[depth].p_hdr)) { in ext4_ext_shift_path_extents()
5077 credits = depth + 2; in ext4_ext_shift_path_extents()
5085 err = -EAGAIN; in ext4_ext_shift_path_extents()
5089 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5095 le32_add_cpu(&ex_start->ee_block, in ext4_ext_shift_path_extents()
5096 -shift); in ext4_ext_shift_path_extents()
5099 EXT_FIRST_EXTENT(path[depth].p_hdr)) in ext4_ext_shift_path_extents()
5102 path, ex_start - 1)) in ext4_ext_shift_path_extents()
5103 ex_last--; in ext4_ext_shift_path_extents()
5107 le32_add_cpu(&ex_last->ee_block, shift); in ext4_ext_shift_path_extents()
5110 ex_last--; in ext4_ext_shift_path_extents()
5113 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5117 if (--depth < 0 || !update) in ext4_ext_shift_path_extents()
5122 err = ext4_ext_get_access(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5127 le32_add_cpu(&path[depth].p_idx->ei_block, -shift); in ext4_ext_shift_path_extents()
5129 le32_add_cpu(&path[depth].p_idx->ei_block, shift); in ext4_ext_shift_path_extents()
5130 err = ext4_ext_dirty(handle, inode, path + depth); in ext4_ext_shift_path_extents()
5135 if (path[depth].p_idx != EXT_FIRST_INDEX(path[depth].p_hdr)) in ext4_ext_shift_path_extents()
5138 depth--; in ext4_ext_shift_path_extents()
5158 int ret = 0, depth; in ext4_ext_shift_extents() local
5164 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_shift_extents()
5169 depth = path->p_depth; in ext4_ext_shift_extents()
5170 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5174 stop = le32_to_cpu(extent->ee_block); in ext4_ext_shift_extents()
5182 path = ext4_find_extent(inode, start - 1, &path, in ext4_ext_shift_extents()
5186 depth = path->p_depth; in ext4_ext_shift_extents()
5187 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5189 ex_start = le32_to_cpu(extent->ee_block); in ext4_ext_shift_extents()
5190 ex_end = le32_to_cpu(extent->ee_block) + in ext4_ext_shift_extents()
5198 (shift > start - ex_end)) { in ext4_ext_shift_extents()
5199 ret = -EINVAL; in ext4_ext_shift_extents()
5203 if (shift > EXT_MAX_BLOCKS - in ext4_ext_shift_extents()
5205 ret = -EINVAL; in ext4_ext_shift_extents()
5235 depth = path->p_depth; in ext4_ext_shift_extents()
5236 extent = path[depth].p_ext; in ext4_ext_shift_extents()
5240 return -EFSCORRUPTED; in ext4_ext_shift_extents()
5243 le32_to_cpu(extent->ee_block)) { in ext4_ext_shift_extents()
5245 if (extent < EXT_LAST_EXTENT(path[depth].p_hdr)) { in ext4_ext_shift_extents()
5246 path[depth].p_ext++; in ext4_ext_shift_extents()
5255 extent = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5256 *iterator = le32_to_cpu(extent->ee_block) + in ext4_ext_shift_extents()
5259 extent = EXT_FIRST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5260 if (le32_to_cpu(extent->ee_block) > start) in ext4_ext_shift_extents()
5261 *iterator = le32_to_cpu(extent->ee_block) - 1; in ext4_ext_shift_extents()
5262 else if (le32_to_cpu(extent->ee_block) == start) in ext4_ext_shift_extents()
5265 extent = EXT_LAST_EXTENT(path[depth].p_hdr); in ext4_ext_shift_extents()
5266 while (le32_to_cpu(extent->ee_block) >= start) in ext4_ext_shift_extents()
5267 extent--; in ext4_ext_shift_extents()
5269 if (extent == EXT_LAST_EXTENT(path[depth].p_hdr)) in ext4_ext_shift_extents()
5275 path[depth].p_ext = extent; in ext4_ext_shift_extents()
5280 if (ret == -EAGAIN) in ext4_ext_shift_extents()
5294 * Returns: 0 and non-zero on error.
5299 struct super_block *sb = inode->i_sb; in ext4_collapse_range()
5312 return -EOPNOTSUPP; in ext4_collapse_range()
5316 return -EINVAL; in ext4_collapse_range()
5325 ret = ext4_force_commit(inode->i_sb); in ext4_collapse_range()
5335 if (offset + len >= inode->i_size) { in ext4_collapse_range()
5336 ret = -EINVAL; in ext4_collapse_range()
5342 ret = -EOPNOTSUPP; in ext4_collapse_range()
5357 down_write(&EXT4_I(inode)->i_mmap_sem); in ext4_collapse_range()
5372 ret = filemap_write_and_wait_range(inode->i_mapping, ioffset, offset); in ext4_collapse_range()
5380 ret = filemap_write_and_wait_range(inode->i_mapping, offset + len, in ext4_collapse_range()
5394 down_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5398 EXT_MAX_BLOCKS - punch_start); in ext4_collapse_range()
5400 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5404 ret = ext4_ext_remove_space(inode, punch_start, punch_stop - 1); in ext4_collapse_range()
5406 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5412 punch_stop - punch_start, SHIFT_LEFT); in ext4_collapse_range()
5414 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5418 new_size = inode->i_size - len; in ext4_collapse_range()
5420 EXT4_I(inode)->i_disksize = new_size; in ext4_collapse_range()
5422 up_write(&EXT4_I(inode)->i_data_sem); in ext4_collapse_range()
5425 inode->i_mtime = inode->i_ctime = current_time(inode); in ext4_collapse_range()
5433 up_write(&EXT4_I(inode)->i_mmap_sem); in ext4_collapse_range()
5450 struct super_block *sb = inode->i_sb; in ext4_insert_range()
5456 int ret = 0, depth, split_flag = 0; in ext4_insert_range() local
5465 return -EOPNOTSUPP; in ext4_insert_range()
5469 return -EINVAL; in ext4_insert_range()
5478 ret = ext4_force_commit(inode->i_sb); in ext4_insert_range()
5486 ret = -EOPNOTSUPP; in ext4_insert_range()
5491 if (len > inode->i_sb->s_maxbytes - inode->i_size) { in ext4_insert_range()
5492 ret = -EFBIG; in ext4_insert_range()
5497 if (offset >= inode->i_size) { in ext4_insert_range()
5498 ret = -EINVAL; in ext4_insert_range()
5513 down_write(&EXT4_I(inode)->i_mmap_sem); in ext4_insert_range()
5525 ret = filemap_write_and_wait_range(inode->i_mapping, ioffset, in ext4_insert_range()
5540 inode->i_size += len; in ext4_insert_range()
5541 EXT4_I(inode)->i_disksize += len; in ext4_insert_range()
5542 inode->i_mtime = inode->i_ctime = current_time(inode); in ext4_insert_range()
5547 down_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5552 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5556 depth = ext_depth(inode); in ext4_insert_range()
5557 extent = path[depth].p_ext; in ext4_insert_range()
5559 ee_start_lblk = le32_to_cpu(extent->ee_block); in ext4_insert_range()
5581 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5590 EXT_MAX_BLOCKS - offset_lblk); in ext4_insert_range()
5592 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5604 up_write(&EXT4_I(inode)->i_data_sem); in ext4_insert_range()
5614 up_write(&EXT4_I(inode)->i_mmap_sem); in ext4_insert_range()
5621 * ext4_swap_extents() - Swap extents between two inodes
5632 * stuff such as page-cache locking consistency, bh mapping consistency or
5649 BUG_ON(!rwsem_is_locked(&EXT4_I(inode1)->i_data_sem)); in ext4_swap_extents()
5650 BUG_ON(!rwsem_is_locked(&EXT4_I(inode2)->i_data_sem)); in ext4_swap_extents()
5681 ex1 = path1[path1->p_depth].p_ext; in ext4_swap_extents()
5682 ex2 = path2[path2->p_depth].p_ext; in ext4_swap_extents()
5687 e1_blk = le32_to_cpu(ex1->ee_block); in ext4_swap_extents()
5688 e2_blk = le32_to_cpu(ex2->ee_block); in ext4_swap_extents()
5709 len = next1 - lblk1; in ext4_swap_extents()
5710 if (len < next2 - lblk2) in ext4_swap_extents()
5711 len = next2 - lblk2; in ext4_swap_extents()
5716 count -= len; in ext4_swap_extents()
5742 if (len > e1_blk + e1_len - lblk1) in ext4_swap_extents()
5743 len = e1_blk + e1_len - lblk1; in ext4_swap_extents()
5744 if (len > e2_blk + e2_len - lblk2) in ext4_swap_extents()
5745 len = e2_blk + e2_len - lblk2; in ext4_swap_extents()
5767 *erp = ext4_ext_get_access(handle, inode1, path1 + path1->p_depth); in ext4_swap_extents()
5770 *erp = ext4_ext_get_access(handle, inode2, path2 + path2->p_depth); in ext4_swap_extents()
5778 ex1->ee_len = cpu_to_le16(e2_len); in ext4_swap_extents()
5779 ex2->ee_len = cpu_to_le16(e1_len); in ext4_swap_extents()
5788 path2->p_depth); in ext4_swap_extents()
5792 path1->p_depth); in ext4_swap_extents()
5804 count -= len; in ext4_swap_extents()
5817 * ext4_clu_mapped - determine whether any block in a logical cluster has
5820 * @inode - file containing the logical cluster
5821 * @lclu - logical cluster of interest
5830 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); in ext4_clu_mapped()
5832 int depth, mapped = 0, err = 0; in ext4_clu_mapped() local
5838 * mapped - no physical clusters have been allocated, and the in ext4_clu_mapped()
5853 depth = ext_depth(inode); in ext4_clu_mapped()
5860 if (unlikely(path[depth].p_ext == NULL && depth != 0)) { in ext4_clu_mapped()
5862 "bad extent address - lblock: %lu, depth: %d, pblock: %lld", in ext4_clu_mapped()
5864 depth, path[depth].p_block); in ext4_clu_mapped()
5865 err = -EFSCORRUPTED; in ext4_clu_mapped()
5869 extent = path[depth].p_ext; in ext4_clu_mapped()
5875 first_lblk = le32_to_cpu(extent->ee_block); in ext4_clu_mapped()
5879 * Three possible outcomes at this point - found extent spanning in ext4_clu_mapped()
5886 ext4_ext_get_actual_len(extent) - 1); in ext4_clu_mapped()
5921 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5923 ret = -EFSCORRUPTED; in ext4_ext_replay_update_ex()
5927 if (le32_to_cpu(ex->ee_block) != start || in ext4_ext_replay_update_ex()
5930 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5932 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5939 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5940 WARN_ON(le32_to_cpu(ex->ee_block) != start); in ext4_ext_replay_update_ex()
5943 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5946 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5953 ex = path[path->p_depth].p_ext; in ext4_ext_replay_update_ex()
5961 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5962 ret = ext4_ext_dirty(NULL, inode, &path[path->p_depth]); in ext4_ext_replay_update_ex()
5963 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_update_ex()
5982 ex = path[path->p_depth].p_ext; in ext4_ext_replay_shrink_inode()
5990 cur = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_replay_shrink_inode()
5994 down_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_shrink_inode()
5995 ext4_ext_dirty(NULL, inode, &path[path->p_depth]); in ext4_ext_replay_shrink_inode()
5996 up_write(&EXT4_I(inode)->i_data_sem); in ext4_ext_replay_shrink_inode()
6010 map.m_len = ((inode->i_size) >> inode->i_sb->s_blocksize_bits) - *cur; in skip_hole()
6032 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_replay_set_iblocks()
6036 ex = path[path->p_depth].p_ext; in ext4_ext_replay_set_iblocks()
6042 end = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_replay_set_iblocks()
6050 map.m_len = end - cur; in ext4_ext_replay_set_iblocks()
6073 numblks += path->p_depth; in ext4_ext_replay_set_iblocks()
6080 ex = path[path->p_depth].p_ext; in ext4_ext_replay_set_iblocks()
6086 cur = max(cur + 1, le32_to_cpu(ex->ee_block) + in ext4_ext_replay_set_iblocks()
6100 ex = path2[path2->p_depth].p_ext; in ext4_ext_replay_set_iblocks()
6101 for (i = 0; i <= max(path->p_depth, path2->p_depth); i++) { in ext4_ext_replay_set_iblocks()
6103 if (i <= path->p_depth) in ext4_ext_replay_set_iblocks()
6105 path[i].p_bh->b_blocknr : 0; in ext4_ext_replay_set_iblocks()
6106 if (i <= path2->p_depth) in ext4_ext_replay_set_iblocks()
6108 path2[i].p_bh->b_blocknr : 0; in ext4_ext_replay_set_iblocks()
6119 inode->i_blocks = numblks << (inode->i_sb->s_blocksize_bits - 9); in ext4_ext_replay_set_iblocks()
6133 path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, in ext4_ext_clear_bb()
6137 ex = path[path->p_depth].p_ext; in ext4_ext_clear_bb()
6143 end = le32_to_cpu(ex->ee_block) + ext4_ext_get_actual_len(ex); in ext4_ext_clear_bb()
6150 map.m_len = end - cur; in ext4_ext_clear_bb()
6157 for (j = 0; j < path->p_depth; j++) { in ext4_ext_clear_bb()
6159 ext4_mb_mark_bb(inode->i_sb, in ext4_ext_clear_bb()
6161 ext4_fc_record_regions(inode->i_sb, inode->i_ino, in ext4_ext_clear_bb()
6167 ext4_mb_mark_bb(inode->i_sb, map.m_pblk, map.m_len, 0); in ext4_ext_clear_bb()
6168 ext4_fc_record_regions(inode->i_sb, inode->i_ino, in ext4_ext_clear_bb()