From: Sasha Levin <[email protected]>
To: [email protected], [email protected]
Cc: Daniele Albano <[email protected]>, Jens Axboe <[email protected]>,
Sasha Levin <[email protected]>,
[email protected], [email protected]
Subject: [PATCH AUTOSEL 5.7 07/25] io_uring: always allow drain/link/hardlink/async sqe flags
Date: Mon, 27 Jul 2020 19:23:27 -0400 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
From: Daniele Albano <[email protected]>
[ Upstream commit 61710e437f2807e26a3402543bdbb7217a9c8620 ]
We currently filter these for timeout_remove/async_cancel/files_update,
but we only should be filtering for fixed file and buffer select. This
also causes a second read of sqe->flags, which isn't needed.
Just check req->flags for the relevant bits. This then allows these
commands to be used in links, for example, like everything else.
Signed-off-by: Daniele Albano <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
fs/io_uring.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 51be3a20ade17..12ab983474dff 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4803,7 +4803,9 @@ static int io_timeout_remove_prep(struct io_kiocb *req,
{
if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
return -EINVAL;
- if (sqe->flags || sqe->ioprio || sqe->buf_index || sqe->len)
+ if (unlikely(req->flags & (REQ_F_FIXED_FILE | REQ_F_BUFFER_SELECT)))
+ return -EINVAL;
+ if (sqe->ioprio || sqe->buf_index || sqe->len)
return -EINVAL;
req->timeout.addr = READ_ONCE(sqe->addr);
@@ -5009,8 +5011,9 @@ static int io_async_cancel_prep(struct io_kiocb *req,
{
if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
return -EINVAL;
- if (sqe->flags || sqe->ioprio || sqe->off || sqe->len ||
- sqe->cancel_flags)
+ if (unlikely(req->flags & (REQ_F_FIXED_FILE | REQ_F_BUFFER_SELECT)))
+ return -EINVAL;
+ if (sqe->ioprio || sqe->off || sqe->len || sqe->cancel_flags)
return -EINVAL;
req->cancel.addr = READ_ONCE(sqe->addr);
@@ -5028,7 +5031,9 @@ static int io_async_cancel(struct io_kiocb *req)
static int io_files_update_prep(struct io_kiocb *req,
const struct io_uring_sqe *sqe)
{
- if (sqe->flags || sqe->ioprio || sqe->rw_flags)
+ if (unlikely(req->flags & (REQ_F_FIXED_FILE | REQ_F_BUFFER_SELECT)))
+ return -EINVAL;
+ if (sqe->ioprio || sqe->rw_flags)
return -EINVAL;
req->files_update.offset = READ_ONCE(sqe->off);
--
2.25.1
next parent reply other threads:[~2020-07-27 23:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <[email protected]>
2020-07-27 23:23 ` Sasha Levin [this message]
2020-07-27 23:23 ` [PATCH AUTOSEL 5.7 21/25] io_uring: missed req_init_async() for IOSQE_ASYNC Sasha Levin
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