This is a note to let you know that I've just added the patch titled
mm/z3fold: use release_z3fold_page_locked() to release locked z3fold page
to the 5.13-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:
mm-z3fold-use-release_z3fold_page_locked-to-release-.patch
and it can be found in the queue-5.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d81bd644c2a77d3d34ba28185bdfb8cc4d2e4f24
Author: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Date: Wed Jun 30 18:50:39 2021 -0700
mm/z3fold: use release_z3fold_page_locked() to release locked z3fold page
[ Upstream commit 28473d91ff7f686d58047ff55f2fa98ab59114a4 ]
We should use release_z3fold_page_locked() to release z3fold page when
it's locked, although it looks harmless to use release_z3fold_page() now.
Link: https://lkml.kernel.org/r/20210619093151.1492174-7-linmiaohe@xxxxxxxxxx
Fixes: dcf5aedb24f8 ("z3fold: stricter locking and more careful reclaim")
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: Vitaly Wool <vitaly.wool@xxxxxxxxxxxx>
Cc: Hillf Danton <hdanton@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/mm/z3fold.c b/mm/z3fold.c
index 33d8487ef6a8..ed0023dc5a3d 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -1383,7 +1383,7 @@ static int z3fold_reclaim_page(struct z3fold_pool *pool, unsigned int retries)
if (zhdr->foreign_handles ||
test_and_set_bit(PAGE_CLAIMED, &page->private)) {
if (kref_put(&zhdr->refcount,
- release_z3fold_page))
+ release_z3fold_page_locked))
atomic64_dec(&pool->pages_nr);
else
z3fold_page_unlock(zhdr);
