Commit d797bd98 authored by Kai Krakow's avatar Kai Krakow Committed by Jens Axboe
Browse files

bcache: Give btree_io_wq correct semantics again 



Before killing `btree_io_wq`, the queue was allocated using
`create_singlethread_workqueue()` which has `WQ_MEM_RECLAIM`. After
killing it, it no longer had this property but `system_wq` is not
single threaded.

Let's combine both worlds and make it multi threaded but able to
reclaim memory.

Cc: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.4+
Signed-off-by: default avatarKai Krakow <kai@kaishome.de>
Signed-off-by: default avatarColy Li <colyli@suse.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 9f233ffe

drivers/md/bcache/btree.c

+1 −1
Original line number Diff line number Diff line
@@ -2775,7 +2775,7 @@ void bch_btree_exit(void) 


int __init bch_btree_init(void)

{

	btree_io_wq = create_singlethread_workqueue("bch_btree_io");

	btree_io_wq = alloc_workqueue("bch_btree_io", WQ_MEM_RECLAIM, 0);

	if (!btree_io_wq)

		return -ENOMEM;