path: root/drivers/md/bcache/btree.c
diff options
authorMichael Lyle <mlyle@lyle.org>2017-11-24 15:14:27 -0800
committerJens Axboe <axboe@kernel.dk>2017-11-24 16:23:01 -0700
commit6c4ca1e36cdc1a0a7a84797804b87920ccbebf51 (patch)
tree2eb6d0aadde521db60ab420f412262db6aa01640 /drivers/md/bcache/btree.c
parente393aa2446150536929140739f09c6ecbcbea7f0 (diff)
bcache: check return value of register_shrinker
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@lyle.org> Reviewed-by: Vojtech Pavlik <vojtech@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/bcache/btree.c')
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 11c5503d31dc..81e8dc3dbe5e 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -807,7 +807,10 @@ int bch_btree_cache_alloc(struct cache_set *c)
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;