From 7c87df9c159aa1d228f0d77b37942216cff34922 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Tue, 24 May 2016 16:38:10 +0200 Subject: [PATCH] bcache: bch_writeback_thread() is not freezable bch_writeback_thread() is calling try_to_freeze(), but that's just an expensive no-op given the fact that the thread is not marked freezable. I/O helper kthreads, exactly such as the bcache writeback thread, actually shouldn't be freezable, because they are potentially necessary for finalizing the image write-out. Signed-off-by: Jiri Kosina Signed-off-by: Jens Axboe --- drivers/md/bcache/writeback.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index b9346cd9cda1..60123677b382 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -12,7 +12,6 @@ #include "writeback.h" #include -#include #include #include @@ -228,7 +227,6 @@ static void read_dirty(struct cached_dev *dc) */ while (!kthread_should_stop()) { - try_to_freeze(); w = bch_keybuf_next(&dc->writeback_keys); if (!w) @@ -433,7 +431,6 @@ static int bch_writeback_thread(void *arg) if (kthread_should_stop()) return 0; - try_to_freeze(); schedule(); continue; } -- 2.25.1