This is a note to let you know that I've just added the patch titled dm writecache: correct uncommitted_block when discarding uncommitted entry to the 5.7-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: dm-writecache-correct-uncommitted_block-when-discarding-uncommitted-entry.patch and it can be found in the queue-5.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 39495b12ef1cf602e6abd350dce2ef4199906531 Mon Sep 17 00:00:00 2001 From: Huaisheng Ye <yehs1@xxxxxxxxxx> Date: Fri, 12 Jun 2020 23:59:11 +0800 Subject: dm writecache: correct uncommitted_block when discarding uncommitted entry 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(+) --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -857,6 +857,8 @@ static void writecache_discard(struct dm writecache_wait_for_ios(wc, WRITE); discarded_something = true; } + if (!writecache_entry_is_committed(wc, e)) + wc->uncommitted_blocks--; writecache_free_entry(wc, e); } Patches currently in stable-queue which might be from yehs1@xxxxxxxxxx are queue-5.7/dm-writecache-correct-uncommitted_block-when-discarding-uncommitted-entry.patch