diff options
| author |   Caleb Sander Mateos <csander@purestorage.com> | 2025-07-08 14:22:10 -0600 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2025-07-18 12:34:56 -0600 |
| commit | 733c43f1df34f9185b945e6f12ac00c8556c6dfe (patch) | |
| tree | 11afa9a11d1a0cef38d61c08dde9247d9ddb3a8e | |
| parent | io_uring/zcrx: account area memory (diff) | |
| download | wireguard-linux-733c43f1df34f9185b945e6f12ac00c8556c6dfe.tar.xz wireguard-linux-733c43f1df34f9185b945e6f12ac00c8556c6dfe.zip | |
io_uring/cmd: introduce IORING_URING_CMD_REISSUE flag
Add a flag IORING_URING_CMD_REISSUE that ->uring_cmd() implementations
can use to tell whether this is the first or subsequent issue of the
uring_cmd. This will allow ->uring_cmd() implementations to store
information in the io_uring_cmd's pdu across issues.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Acked-by: David Sterba <dsterba@suse.com>
Link: https://lore.kernel.org/r/20250708202212.2851548-3-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | include/linux/io_uring/cmd.h | 2 | ||||
| -rw-r--r-- | io_uring/uring_cmd.c | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h index 53408124c1e5..29892f54e0ac 100644 --- a/include/linux/io_uring/cmd.h +++ b/include/linux/io_uring/cmd.h @@ -8,6 +8,8 @@ /* only top 8 bits of sqe->uring_cmd_flags for kernel internal use */ #define IORING_URING_CMD_CANCELABLE (1U << 30) +/* io_uring_cmd is being issued again */ +#define IORING_URING_CMD_REISSUE (1U << 31) struct io_uring_cmd { struct file *file; diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index b228b84a510f..58964a2f8582 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -261,7 +261,11 @@ int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags) } ret = file->f_op->uring_cmd(ioucmd, issue_flags); - if (ret == -EAGAIN || ret == -EIOCBQUEUED) + if (ret == -EAGAIN) { + ioucmd->flags |= IORING_URING_CMD_REISSUE; + return ret; + } + if (ret == -EIOCBQUEUED) return ret; if (ret < 0) req_set_fail(req); |