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Diffstat (limited to 'block/blk-flush.c')
-rw-r--r--block/blk-flush.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/block/blk-flush.c b/block/blk-flush.c
index c8e25768f2e1..55028a707927 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -472,7 +472,16 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
}
EXPORT_SYMBOL(blkdev_issue_flush);
-void blk_mq_init_flush(struct request_queue *q)
+int blk_mq_init_flush(struct request_queue *q)
{
+ struct blk_mq_tag_set *set = q->tag_set;
+
spin_lock_init(&q->mq_flush_lock);
+
+ q->flush_rq = kzalloc(round_up(sizeof(struct request) +
+ set->cmd_size, cache_line_size()),
+ GFP_KERNEL);
+ if (!q->flush_rq)
+ return -ENOMEM;
+ return 0;
}