diff options
| author | Jens Axboe <axboe@kernel.dk> | 2020-04-28 13:16:53 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-04-30 22:24:27 -0600 |
| commit | 490e89676a523c688343d6cb8ca5f5dc476414df (patch) | |
| tree | 0b5954fa5881a59c03ee2a9528341dab41c35c87 /fs/io_uring.c | |
| parent | af197f50ac53fff1241598c73ca606754a3bb808 (diff) | |
| download | lwn-490e89676a523c688343d6cb8ca5f5dc476414df.tar.gz lwn-490e89676a523c688343d6cb8ca5f5dc476414df.zip | |
io_uring: only force async punt if poll based retry can't handle it
We do blocking retry from our poll handler, if the file supports polled
notifications. Only mark the request as needing an async worker if we
can't poll for it.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 516a59db73ca..b536c34c6c36 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2604,7 +2604,8 @@ copy_iov: if (ret) goto out_free; /* any defer here is final, must blocking retry */ - if (!(req->flags & REQ_F_NOWAIT)) + if (!(req->flags & REQ_F_NOWAIT) && + !file_can_poll(req->file)) req->flags |= REQ_F_MUST_PUNT; return -EAGAIN; } @@ -2726,7 +2727,8 @@ copy_iov: if (ret) goto out_free; /* any defer here is final, must blocking retry */ - req->flags |= REQ_F_MUST_PUNT; + if (!file_can_poll(req->file)) + req->flags |= REQ_F_MUST_PUNT; return -EAGAIN; } } |