From: Huaisheng Ye <yehs1@xxxxxxxxxx>
commit 39495b12ef1cf602e6abd350dce2ef4199906531 upstream.
When uncommitted entry has been discarded, correct wc->uncommitted_block
for getting the exact number.
Fixes: 48debafe4f2fe ("dm: add writecache target")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Huaisheng Ye <yehs1@xxxxxxxxxx>
Acked-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-writecache.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 613c171b1b6d2..856b3515654ff 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -857,6 +857,8 @@ static void writecache_discard(struct dm_writecache *wc, sector_t start, sector_
writecache_wait_for_ios(wc, WRITE);
discarded_something = true;
}
+ if (!writecache_entry_is_committed(wc, e))
+ wc->uncommitted_blocks--;
writecache_free_entry(wc, e);
}
--
2.25.1
