This is a note to let you know that I've just added the patch titled
bcache: check return value of register_shrinker
to the 3.18-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:
bcache-check-return-value-of-register_shrinker.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Feb 1 14:48:12 CET 2018
From: Michael Lyle <mlyle@xxxxxxxx>
Date: Fri, 24 Nov 2017 15:14:27 -0800
Subject: bcache: check return value of register_shrinker
From: Michael Lyle <mlyle@xxxxxxxx>
[ Upstream commit 6c4ca1e36cdc1a0a7a84797804b87920ccbebf51 ]
register_shrinker is now __must_check, so check it to kill a warning.
Caller of bch_btree_cache_alloc in super.c appropriately checks return
value so this is fully plumbed through.
This V2 fixes checkpatch warnings and improves the commit description,
as I was too hasty getting the previous version out.
Signed-off-by: Michael Lyle <mlyle@xxxxxxxx>
Reviewed-by: Vojtech Pavlik <vojtech@xxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/bcache/btree.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -808,7 +808,10 @@ int bch_btree_cache_alloc(struct cache_s
c->shrink.scan_objects = bch_mca_scan;
c->shrink.seeks = 4;
c->shrink.batch = c->btree_pages * 2;
- register_shrinker(&c->shrink);
+
+ if (register_shrinker(&c->shrink))
+ pr_warn("bcache: %s: could not register shrinker",
+ __func__);
return 0;
}
Patches currently in stable-queue which might be from mlyle@xxxxxxxx are
queue-3.18/bcache-check-return-value-of-register_shrinker.patch