Commit 01cfa28a authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: use the percpu bio cache in __blkdev_direct_IO 



Use bio_alloc_kiocb to dip into the percpu cache of bios when the
caller asks for it.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 394918eb

fs/block_dev.c

+4 −2
Original line number Diff line number Diff line
@@ -385,7 +385,7 @@ static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, 
	    (bdev_logical_block_size(bdev) - 1))

		return -EINVAL;



	bio = bio_alloc_bioset(GFP_KERNEL, nr_pages, &blkdev_dio_pool);

	bio = bio_alloc_kiocb(iocb, nr_pages, &blkdev_dio_pool);



	dio = container_of(bio, struct blkdev_dio, bio);

	dio->is_sync = is_sync = is_sync_kiocb(iocb);
@@ -513,7 +513,9 @@ blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter) 


static __init int blkdev_init(void)

{

	return bioset_init(&blkdev_dio_pool, 4, offsetof(struct blkdev_dio, bio), BIOSET_NEED_BVECS);

	return bioset_init(&blkdev_dio_pool, 4,

				offsetof(struct blkdev_dio, bio),

				BIOSET_NEED_BVECS|BIOSET_PERCPU_CACHE);

}

module_init(blkdev_init);