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authorLinus Torvalds <torvalds@linux-foundation.org>2021-10-03 23:56:53 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-10-03 23:56:53 +0300
commitca3cef466feaaf296c8519e2cc5ccf6565e3e7e9 (patch)
treeb0e33429a4c883f4003e223a840451c89bb5016a /fs/ext4/extents.c
parent7fab1c12bde926c5a8c7d5984c551d0854d7e0b3 (diff)
parentf2c77973507fd116c3657df1dc048864a2b16a1c (diff)
downloadlinux-ca3cef466feaaf296c8519e2cc5ccf6565e3e7e9.tar.xz
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o: "Fix a number of ext4 bugs in fast_commit, inline data, and delayed allocation. Also fix error handling code paths in ext4_dx_readdir() and ext4_fill_super(). Finally, avoid a grabbing a journal head in the delayed allocation write in the common cases where we are overwriting a pre-existing block or appending to an inode" * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: recheck buffer uptodate bit under buffer lock ext4: fix potential infinite loop in ext4_dx_readdir() ext4: flush s_error_work before journal destroy in ext4_fill_super ext4: fix loff_t overflow in ext4_max_bitmap_size() ext4: fix reserved space counter leakage ext4: limit the number of blocks in one ADD_RANGE TLV ext4: enforce buffer head state assertion in ext4_da_map_blocks ext4: remove extent cache entries when truncating inline data ext4: drop unnecessary journal handle in delalloc write ext4: factor out write end code of inline file ext4: correct the error path of ext4_write_inline_data_end() ext4: check and update i_disksize properly ext4: add error checking to ext4_ext_replay_set_iblocks()
Diffstat (limited to 'fs/ext4/extents.c')
-rw-r--r--fs/ext4/extents.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index c0de30f25185..0e02571f2f82 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -5916,7 +5916,7 @@ void ext4_ext_replay_shrink_inode(struct inode *inode, ext4_lblk_t end)
}
/* Check if *cur is a hole and if it is, skip it */
-static void skip_hole(struct inode *inode, ext4_lblk_t *cur)
+static int skip_hole(struct inode *inode, ext4_lblk_t *cur)
{
int ret;
struct ext4_map_blocks map;
@@ -5925,9 +5925,12 @@ static void skip_hole(struct inode *inode, ext4_lblk_t *cur)
map.m_len = ((inode->i_size) >> inode->i_sb->s_blocksize_bits) - *cur;
ret = ext4_map_blocks(NULL, inode, &map, 0);
+ if (ret < 0)
+ return ret;
if (ret != 0)
- return;
+ return 0;
*cur = *cur + map.m_len;
+ return 0;
}
/* Count number of blocks used by this inode and update i_blocks */
@@ -5976,7 +5979,9 @@ int ext4_ext_replay_set_iblocks(struct inode *inode)
* iblocks by total number of differences found.
*/
cur = 0;
- skip_hole(inode, &cur);
+ ret = skip_hole(inode, &cur);
+ if (ret < 0)
+ goto out;
path = ext4_find_extent(inode, cur, NULL, 0);
if (IS_ERR(path))
goto out;
@@ -5995,8 +6000,12 @@ int ext4_ext_replay_set_iblocks(struct inode *inode)
}
cur = max(cur + 1, le32_to_cpu(ex->ee_block) +
ext4_ext_get_actual_len(ex));
- skip_hole(inode, &cur);
-
+ ret = skip_hole(inode, &cur);
+ if (ret < 0) {
+ ext4_ext_drop_refs(path);
+ kfree(path);
+ break;
+ }
path2 = ext4_find_extent(inode, cur, NULL, 0);
if (IS_ERR(path2)) {
ext4_ext_drop_refs(path);