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>

diff --git a/drivers/md/bcache/alloc.c b/drivers/md/bcache/alloc.c
index 8eeab72b93e2c4fcf6573e6a63d768f40f8e5320..ca4abe1ccd8d7660fcb4bf3b1401aa93ebc7cf58 100644 (file)
--- a/drivers/md/bcache/alloc.c
+++ b/drivers/md/bcache/alloc.c
@@ -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);                    \
        }                                                               \