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authorJiri Kosina <jkosina@suse.cz>2016-05-24 17:38:10 +0300
committerJens Axboe <axboe@fb.com>2016-05-24 18:00:40 +0300
commit7c87df9c159aa1d228f0d77b37942216cff34922 (patch)
tree2cb7df6171554ba8547681b42fa3f9a6d6b02912 /drivers/md/bcache/writeback.c
parentba36c21b0cd8b55fd7f010e9052656c2c03d9e5e (diff)
downloadlinux-7c87df9c159aa1d228f0d77b37942216cff34922.tar.xz
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 <jkosina@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md/bcache/writeback.c')
-rw-r--r--drivers/md/bcache/writeback.c3
1 files changed, 0 insertions, 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 <linux/delay.h>
-#include <linux/freezer.h>
#include <linux/kthread.h>
#include <trace/events/bcache.h>
@@ -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;
}