diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-10-12 14:12:20 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-18 15:17:36 +0300 |
| commit | d729cf9acb9311956c8a37113dcfa0160a2d9665 (patch) | |
| tree | db98a1f9ce4a4ddf9e454bc8660a87dacb616061 /block | |
| parent | ef99b2d37666b7a600baab9e1c4944436652b0a2 (diff) | |
| download | linux-d729cf9acb9311956c8a37113dcfa0160a2d9665.tar.xz | |
io_uring: don't sleep when polling for I/O
There is no point in sleeping for the expected I/O completion timeout
in the io_uring async polling model as we never poll for a specific
I/O.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Mark Wunderlich <mark.wunderlich@intel.com>
Link: https://lore.kernel.org/r/20211012111226.760968-11-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 6609e10657a8..97c24e461d0a 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -4103,7 +4103,8 @@ int blk_poll(struct request_queue *q, blk_qc_t cookie, unsigned int flags) if (current->plug) blk_flush_plug_list(current->plug, false); - if (q->poll_nsec != BLK_MQ_POLL_CLASSIC) { + if (!(flags & BLK_POLL_NOSLEEP) && + q->poll_nsec != BLK_MQ_POLL_CLASSIC) { if (blk_mq_poll_hybrid(q, cookie)) return 1; } |