On 10/24/21 16:09, Jens Axboe wrote:
On 10/23/21 10:46 AM, Pavel Begunkov wrote:
On 10/23/21 17:21, Pavel Begunkov wrote:
With addition of __blkdev_direct_IO_async(), __blkdev_direct_IO() now
serves only multio-bio I/O, which we don't poll. Now we can remove
anything related to I/O polling from it.
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
block/fops.c | 20 +++-----------------
1 file changed, 3 insertions(+), 17 deletions(-)
diff --git a/block/fops.c b/block/fops.c
index 8800b0ad5c29..997904963a9d 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -190,7 +190,6 @@ static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
struct blk_plug plug;
struct blkdev_dio *dio;
struct bio *bio;
- bool do_poll = (iocb->ki_flags & IOCB_HIPRI);
bool is_read = (iov_iter_rw(iter) == READ), is_sync;
loff_t pos = iocb->ki_pos;
int ret = 0;
@@ -216,12 +215,7 @@ static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
if (is_read && iter_is_iovec(iter))
dio->flags |= DIO_SHOULD_DIRTY;
- /*
- * Don't plug for HIPRI/polled IO, as those should go straight
- * to issue
- */
- if (!(iocb->ki_flags & IOCB_HIPRI))
- blk_start_plug(&plug);
I'm not sure, do we want to leave it conditional here?
For async polled there's only one user and that user plug already...
It's __blkdev_direct_IO() though, covers both sync and async
--
Pavel Begunkov
