commit e814e71ba4a6e1d7509b0f4b1928365ea650cace
author Jens Axboe <axboe@fb.com> Wed May 21 13:59:08 2014 -0600
committer Jens Axboe <axboe@fb.com> Wed May 21 13:59:08 2014 -0600
tree 0db6c8a94340addf1f8cab4c4b761bca8df9ab11
parent da41a589f52464e24ddefe76814ee35bfb07950c

blk-mq: allow the hctx cpu hotplug notifier to return errors

Prepare this for the next patch which adds more smarts in the
plugging logic, so that we can save some memory.

Signed-off-by: Jens Axboe <axboe@fb.com>

block/blk-mq.h

diff --git a/block/blk-mq.h b/block/blk-mq.h
index 7db4fe4..491dbd4 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -39,7 +39,7 @@
  */
 struct blk_mq_cpu_notifier;
 void blk_mq_init_cpu_notifier(struct blk_mq_cpu_notifier *notifier,
-			      void (*fn)(void *, unsigned long, unsigned int),
+			      int (*fn)(void *, unsigned long, unsigned int),
 			      void *data);
 void blk_mq_register_cpu_notifier(struct blk_mq_cpu_notifier *notifier);
 void blk_mq_unregister_cpu_notifier(struct blk_mq_cpu_notifier *notifier);