Commit 770b8ce4 authored May 24, 2016 by Jiri Kosina Committed by Jens Axboe May 24, 2016

bcache: bch_allocator_thread() is not freezable



bch_allocator_thread() is calling try_to_freeze(), but that's just an
expensive no-op given the fact that the thread is not marked freezable.

Bucket allocator has to be up and running to the very last stages of the
suspend, as the bcache I/O that's in flight (think of writing an
hibernation image to a swap device served by bcache).

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>

parent 7c87df9c

drivers/md/bcache/alloc.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -64,7 +64,6 @@
		#include "btree.h"

		#include <linux/blkdev.h>
		#include <linux/freezer.h>
		#include <linux/kthread.h>
		#include <linux/random.h>
		#include <trace/events/bcache.h>
		@@ -288,7 +287,6 @@ do { \
		if (kthread_should_stop()) \
		return 0; \
		\
		try_to_freeze(); \
		schedule(); \
		mutex_lock(&(ca)->set->bucket_lock); \
		} \