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| author | Ming Lei <ming.lei@canonical.com> | 2014-09-25 17:23:39 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-09-25 23:22:34 +0200 |
| commit | 1bcb1eada4f11a713cbe586d1b5a5d93a48277cb (patch) | |
| tree | 89e14d77cb1e95f7742ee7395ed5ff7e84afc057 /block/blk-flush.c | |
| parent | blk-mq: handle failure path for initializing hctx (diff) | |
| download | linux-1bcb1eada4f11a713cbe586d1b5a5d93a48277cb.tar.xz linux-1bcb1eada4f11a713cbe586d1b5a5d93a48277cb.zip | |
blk-mq: allocate flush_rq in blk_mq_init_flush()
It is reasonable to allocate flush req in blk_mq_init_flush().
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-flush.c')
| -rw-r--r-- | block/blk-flush.c | 11 |
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; } |