diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2025-02-10 18:21:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-17 11:40:37 +0300 |
| commit | 644636ee7eb2a75975ded30ebf794bc4c229ae33 (patch) | |
| tree | 8499667aee928ccde57a78541fd48a6d8ec2ba35 /io_uring | |
| parent | a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3 (diff) | |
| download | linux-644636ee7eb2a75975ded30ebf794bc4c229ae33.tar.xz | |
io_uring/rw: commit provided buffer state on async
When we get -EIOCBQUEUED, we need to ensure that the buffer is consumed
from the provided buffer ring, which can be done with io_kbuf_recycle()
+ REQ_F_PARTIAL_IO.
Reported-by: Muhammad Ramdhan <ramdhan@starlabs.sg>
Reported-by: Bing-Jhong Billy Jheng <billy@starlabs.sg>
Reported-by: Jacob Soo <jacob.soo@starlabs.sg>
Fixes: c7fb19428d67d ("io_uring: add support for ring mapped supplied buffers")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/rw.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index a62f84e28bac..75b001febb4d 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -793,6 +793,8 @@ static int __io_read(struct io_kiocb *req, unsigned int issue_flags) goto done; ret = 0; } else if (ret == -EIOCBQUEUED) { + req->flags |= REQ_F_PARTIAL_IO; + io_kbuf_recycle(req, issue_flags); if (iovec) kfree(iovec); return IOU_ISSUE_SKIP_COMPLETE; @@ -816,6 +818,9 @@ static int __io_read(struct io_kiocb *req, unsigned int issue_flags) goto done; } + req->flags |= REQ_F_PARTIAL_IO; + io_kbuf_recycle(req, issue_flags); + io = req->async_data; s = &io->s; /* @@ -956,6 +961,11 @@ int io_write(struct io_kiocb *req, unsigned int issue_flags) else ret2 = -EINVAL; + if (ret2 == -EIOCBQUEUED) { + req->flags |= REQ_F_PARTIAL_IO; + io_kbuf_recycle(req, issue_flags); + } + if (req->flags & REQ_F_REISSUE) { req->flags &= ~REQ_F_REISSUE; ret2 = -EAGAIN; |