6.5-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhang Yi <yi.zhang@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: stable@xxxxxxxxxx
Link: https://lore.kernel.org/r/20230824092619.1327976-2-yi.zhang@xxxxxxxxxxxxxxx
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
}
