xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

block: add a poll_fn callback to struct request_queue

Browse Source 
That we we can also poll non blk-mq queues.  Mostly needed for
the NVMe multipath code, but could also be useful elsewhere.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2017-11-02 21:29:54 +03:00
committed by Jens Axboe
parent 8ddcd65325
commit ea435e1b93
8 changed files with 25 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
fs/block_dev.c
View File

@@ -237,7 +237,7 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter,
if (!READ_ONCE(bio.bi_private))
break;
if (!(iocb->ki_flags & IOCB_HIPRI) ||
!blk_mq_poll(bdev_get_queue(bdev), qc))
!blk_poll(bdev_get_queue(bdev), qc))
io_schedule();
}
__set_current_state(TASK_RUNNING);
@@ -402,7 +402,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
break;
if (!(iocb->ki_flags & IOCB_HIPRI) ||
!blk_mq_poll(bdev_get_queue(bdev), qc))
!blk_poll(bdev_get_queue(bdev), qc))
io_schedule();
}
__set_current_state(TASK_RUNNING);