diff options
| author |   Christoph Hellwig <hch@lst.de> | 2021-01-26 15:52:35 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-01-27 09:51:48 -0700 |
| commit | c6bf3f0e25f4c0f0ecce6cf8d1c589bd9d74d3cf (patch) | |
| tree | 75b4523f9dc5725dcef0150a487d27303058b259 /block/blk-flush.c | |
| parent | block: split bio_kmalloc from bio_alloc_bioset (diff) | |
| download | linux-dev-c6bf3f0e25f4c0f0ecce6cf8d1c589bd9d74d3cf.tar.xz linux-dev-c6bf3f0e25f4c0f0ecce6cf8d1c589bd9d74d3cf.zip | |
block: use an on-stack bio in blkdev_issue_flush
There is no point in allocating memory for a synchronous flush.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Acked-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-flush.c')
| -rw-r--r-- | block/blk-flush.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/block/blk-flush.c b/block/blk-flush.c index 76c1624cb06c..7942ca6ed321 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -432,23 +432,18 @@ void blk_insert_flush(struct request *rq) /** * blkdev_issue_flush - queue a flush * @bdev: blockdev to issue flush for - * @gfp_mask: memory allocation flags (for bio_alloc) * * Description: * Issue a flush for the block device in question. */ -int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask) +int blkdev_issue_flush(struct block_device *bdev) { - struct bio *bio; - int ret = 0; + struct bio bio; - bio = bio_alloc(gfp_mask, 0); - bio_set_dev(bio, bdev); - bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH; - - ret = submit_bio_wait(bio); - bio_put(bio); - return ret; + bio_init(&bio, NULL, 0); + bio_set_dev(&bio, bdev); + bio.bi_opf = REQ_OP_WRITE | REQ_PREFLUSH; + return submit_bio_wait(&bio); } EXPORT_SYMBOL(blkdev_issue_flush); |