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| author | Christoph Hellwig <hch@lst.de> | 2016-12-22 19:20:45 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-12-22 11:48:20 -0700 |
| commit | 64d656a162d7ba49d6d1863e41407b0f95e19258 (patch) | |
| tree | e72df1d32758ffaaa552b2c3ae2f991510a405b7 /fs | |
| parent | 50f6584e4c626b8fa39edb66f33fec27bab3996c (diff) | |
| download | linux-64d656a162d7ba49d6d1863e41407b0f95e19258.tar.gz linux-64d656a162d7ba49d6d1863e41407b0f95e19258.tar.bz2 linux-64d656a162d7ba49d6d1863e41407b0f95e19258.zip | |
block: add back plugging in __blkdev_direct_IO
This allows sending larger than 1 MB requests to devices that support
large I/O sizes.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/block_dev.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 7c4507224ed6..206a92aab52e 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -328,6 +328,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages) struct file *file = iocb->ki_filp; struct inode *inode = bdev_file_inode(file); struct block_device *bdev = I_BDEV(inode); + struct blk_plug plug; struct blkdev_dio *dio; struct bio *bio; bool is_read = (iov_iter_rw(iter) == READ); @@ -353,6 +354,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages) dio->multi_bio = false; dio->should_dirty = is_read && (iter->type == ITER_IOVEC); + blk_start_plug(&plug); for (;;) { bio->bi_bdev = bdev; bio->bi_iter.bi_sector = pos >> 9; @@ -394,6 +396,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages) submit_bio(bio); bio = bio_alloc(GFP_KERNEL, nr_pages); } + blk_finish_plug(&plug); if (!dio->is_sync) return -EIOCBQUEUED; |