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| author | Jens Axboe <axboe@kernel.dk> | 2024-03-12 15:29:47 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-03-12 15:29:47 +0100 |
| commit | 0a3737db8479b77f95f4bfda8e71b03c697eb56a (patch) | |
| tree | e28ce74454871c42d83b2a8335293951b2902659 /io_uring | |
| parent | io_uring: don't save/restore iowait state (diff) | |
| download | linux-0a3737db8479b77f95f4bfda8e71b03c697eb56a.tar.xz linux-0a3737db8479b77f95f4bfda8e71b03c697eb56a.zip | |
io_uring/rw: return IOU_ISSUE_SKIP_COMPLETE for multishot retry
If read multishot is being invoked from the poll retry handler, then we
should return IOU_ISSUE_SKIP_COMPLETE rather than -EAGAIN. If not, then
a CQE will be posted with -EAGAIN rather than triggering the retry when
the file is flagged as readable again.
Cc: stable@vger.kernel.org
Reported-by: Sargun Dhillon <sargun@meta.com>
Fixes: fc68fcda04910 ("io_uring/rw: add support for IORING_OP_READ_MULTISHOT")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/rw.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index 47e097ab5d7e..0585ebcc9773 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -947,6 +947,8 @@ int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags) */ if (io_kbuf_recycle(req, issue_flags)) rw->len = 0; + if (issue_flags & IO_URING_F_MULTISHOT) + return IOU_ISSUE_SKIP_COMPLETE; return -EAGAIN; } |