Stupid and very dangerous mistake. Plain luck it did not result
in corruptions, was exposed as failure to convert csd journal
from old to new format.
Affects: #VSTOR-100610
Signed-off-by: Alexey Kuznetsov <kuz...@virtuozzo.com>
---
fs/ext4/move_extent.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index aa9b632..9210fbd 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -941,7 +941,7 @@ static unsigned int count_credits(struct inode *inode,
ext4_lblk_t start, ext4_l
goto out;
}
if (cur_blk < d_start) {
- cur_len -= cur_blk - d_start;
+ cur_len -= d_start - cur_blk;
cur_blk = d_start;
}
if (cur_blk + cur_len > d_end)
--
1.8.3.1
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