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dm bufio: check result of register_shrinker() 

dm_bufio_client_create() does not check result of register_shrinker()
which was tagged as __must_check recently, reported by sparse.

Signed-off-by: Aliaksei Karaliou <akaraliou.dev@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Aliaksei Karaliou 2017-12-23 13:27:04 +03:00 committed by Mike Snitzer
parent bde1418478
commit 46898e9a7a
1 changed files with 9 additions and 6 deletions
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15
drivers/md/dm-bufio.c
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@ -1743,20 +1743,23 @@ struct dm_bufio_client *dm_bufio_client_create(struct block_device *bdev, unsign
__free_buffer_wake(b);
}
c->shrinker.count_objects = dm_bufio_shrink_count;
c->shrinker.scan_objects = dm_bufio_shrink_scan;
c->shrinker.seeks = 1;
c->shrinker.batch = 0;
r = register_shrinker(&c->shrinker);
if (r)
goto bad_shrinker;
mutex_lock(&dm_bufio_clients_lock);
dm_bufio_client_count++;
list_add(&c->client_list, &dm_bufio_all_clients);
__cache_size_refresh();
mutex_unlock(&dm_bufio_clients_lock);
c->shrinker.count_objects = dm_bufio_shrink_count;
c->shrinker.scan_objects = dm_bufio_shrink_scan;
c->shrinker.seeks = 1;
c->shrinker.batch = 0;
register_shrinker(&c->shrinker);
return c;
bad_shrinker:
bad_buffer:
bad_cache:
while (!list_empty(&c->reserved_buffers)) {