diff options
| author | Jens Axboe <axboe@kernel.dk> | 2018-08-29 10:36:56 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-11-07 13:45:00 -0700 |
| commit | d1e36282b0bbd5de6a9c4d5275e94ef3b3438f48 (patch) | |
| tree | 80328ea0526706f873113125f3bbee640615d3f2 /fs | |
| parent | 3b6592f70ad7b4c24dd3eb2ac9bbe3353d02c992 (diff) | |
block: add REQ_HIPRI and inherit it from IOCB_HIPRI
We use IOCB_HIPRI to poll for IO in the caller instead of scheduling.
This information is not available for (or after) IO submission. The
driver may make different queue choices based on the type of IO, so
make the fact that we will poll for this IO known to the lower layers
as well.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/block_dev.c | 2 | ||||
| -rw-r--r-- | fs/direct-io.c | 2 | ||||
| -rw-r--r-- | fs/iomap.c | 9 |
3 files changed, 12 insertions, 1 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index a80b4f0ee7c4..c039abfb2052 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -232,6 +232,8 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter, bio.bi_opf = dio_bio_write_op(iocb); task_io_account_write(ret); } + if (iocb->ki_flags & IOCB_HIPRI) + bio.bi_opf |= REQ_HIPRI; qc = submit_bio(&bio); for (;;) { diff --git a/fs/direct-io.c b/fs/direct-io.c index 722d17c88edb..ea07d5a34317 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -1265,6 +1265,8 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, } else { dio->op = REQ_OP_READ; } + if (iocb->ki_flags & IOCB_HIPRI) + dio->op_flags |= REQ_HIPRI; /* * For AIO O_(D)SYNC writes we need to defer completions to a workqueue diff --git a/fs/iomap.c b/fs/iomap.c index 64ce240217a1..f61d13dfdf09 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -1553,6 +1553,7 @@ iomap_dio_zero(struct iomap_dio *dio, struct iomap *iomap, loff_t pos, unsigned len) { struct page *page = ZERO_PAGE(0); + int flags = REQ_SYNC | REQ_IDLE; struct bio *bio; bio = bio_alloc(GFP_KERNEL, 1); @@ -1561,9 +1562,12 @@ iomap_dio_zero(struct iomap_dio *dio, struct iomap *iomap, loff_t pos, bio->bi_private = dio; bio->bi_end_io = iomap_dio_bio_end_io; + if (dio->iocb->ki_flags & IOCB_HIPRI) + flags |= REQ_HIPRI; + get_page(page); __bio_add_page(bio, page, len, 0); - bio_set_op_attrs(bio, REQ_OP_WRITE, REQ_SYNC | REQ_IDLE); + bio_set_op_attrs(bio, REQ_OP_WRITE, flags); atomic_inc(&dio->ref); return submit_bio(bio); @@ -1662,6 +1666,9 @@ iomap_dio_bio_actor(struct inode *inode, loff_t pos, loff_t length, bio_set_pages_dirty(bio); } + if (dio->iocb->ki_flags & IOCB_HIPRI) + bio->bi_opf |= REQ_HIPRI; + iov_iter_advance(dio->submit.iter, n); dio->size += n; |