6.6-stable review patch. If anyone has any objections, please let me know.
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From: Zhang Yi yi.zhang@huawei.com
commit 40ea98396a3659062267d1fe5f99af4f7e4f05e3 upstream.
When big allocate feature is enabled, we need to count and update reserved clusters before removing a delayed only extent_status entry. {init|count|get}_rsvd() have already done this, but the start block number of this counting isn't correct in the following case.
lblk end | | v v ------------------------- | | orig_es ------------------------- ^ ^ len1 is 0 | len2 |
If the start block of the orig_es entry founded is bigger than lblk, we passed lblk as start block to count_rsvd(), but the length is correct, finally, the range to be counted is offset. This patch fix this by passing the start blocks to 'orig_es->lblk + len1'.
Signed-off-by: Zhang Yi yi.zhang@huawei.com Cc: stable@kernel.org Link: https://lore.kernel.org/r/20230824092619.1327976-2-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o tytso@mit.edu Reviewed-by: Jan Kara jack@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/ext4/extents_status.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -1431,8 +1431,8 @@ static int __es_remove_extent(struct ino } } if (count_reserved) - count_rsvd(inode, lblk, orig_es.es_len - len1 - len2, - &orig_es, &rc); + count_rsvd(inode, orig_es.es_lblk + len1, + orig_es.es_len - len1 - len2, &orig_es, &rc); goto out_get_reserved; }