[PATCH v2 1/3] io_uring/cmd: rename struct uring_cache to io_uring_cmd_data

Mark Harmstone
2024-12-13T18:45:06Z

From: Jens Axboe <axboe@kernel.dk>

In preparation for making this more generically available for
->uring_cmd() usage that needs stable command data, rename it and move
it to io_uring/cmd.h instead.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
include/linux/io_uring/cmd.h | 4 ++++
io_uring/io_uring.c | 2 +-
io_uring/opdef.c | 3 ++-
io_uring/uring_cmd.c | 10 +++++-----
io_uring/uring_cmd.h | 4 ----
5 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h
index 0d5448c0b86c..61f97a398e9d 100644
--- a/include/linux/io_uring/cmd.h
+++ b/include/linux/io_uring/cmd.h
@@ -18,6 +18,10 @@ struct io_uring_cmd {
u8 pdu[32]; /* available inline for free use */
};

+struct io_uring_cmd_data {
+ struct io_uring_sqe sqes[2];
+};
+
static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sqe)
{
return sqe->cmd;
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 06ff41484e29..8bac014ed631 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -320,7 +320,7 @@ static __cold struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p)
ret |= io_alloc_cache_init(&ctx->rw_cache, IO_ALLOC_CACHE_MAX,
sizeof(struct io_async_rw));
ret |= io_alloc_cache_init(&ctx->uring_cache, IO_ALLOC_CACHE_MAX,
- sizeof(struct uring_cache));
+ sizeof(struct io_uring_cmd_data));
spin_lock_init(&ctx->msg_lock);
ret |= io_alloc_cache_init(&ctx->msg_cache, IO_ALLOC_CACHE_MAX,
sizeof(struct io_kiocb));
diff --git a/io_uring/opdef.c b/io_uring/opdef.c
index 3de75eca1c92..e8baef4e5146 100644
--- a/io_uring/opdef.c
+++ b/io_uring/opdef.c
@@ -7,6 +7,7 @@
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/io_uring.h>
+#include <linux/io_uring/cmd.h>

#include "io_uring.h"
#include "opdef.h"
@@ -414,7 +415,7 @@ const struct io_issue_def io_issue_defs[] = {
.plug = 1,
.iopoll = 1,
.iopoll_queue = 1,
- .async_size = 2 * sizeof(struct io_uring_sqe),
+ .async_size = sizeof(struct io_uring_cmd_data),
.prep = io_uring_cmd_prep,
.issue = io_uring_cmd,
},
diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c
index af842e9b4eb9..629cb4266da6 100644
--- a/io_uring/uring_cmd.c
+++ b/io_uring/uring_cmd.c
@@ -16,10 +16,10 @@
#include "rsrc.h"
#include "uring_cmd.h"

-static struct uring_cache *io_uring_async_get(struct io_kiocb *req)
+static struct io_uring_cmd_data *io_uring_async_get(struct io_kiocb *req)
{
struct io_ring_ctx *ctx = req->ctx;
- struct uring_cache *cache;
+ struct io_uring_cmd_data *cache;

cache = io_alloc_cache_get(&ctx->uring_cache);
if (cache) {
@@ -35,7 +35,7 @@ static struct uring_cache *io_uring_async_get(struct io_kiocb *req)
static void io_req_uring_cleanup(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
- struct uring_cache *cache = req->async_data;
+ struct io_uring_cmd_data *cache = req->async_data;

if (issue_flags & IO_URING_F_UNLOCKED)
return;
@@ -183,7 +183,7 @@ static int io_uring_cmd_prep_setup(struct io_kiocb *req,
const struct io_uring_sqe *sqe)
{
struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
- struct uring_cache *cache;
+ struct io_uring_cmd_data *cache;

cache = io_uring_async_get(req);
if (unlikely(!cache))
@@ -260,7 +260,7 @@ int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags)

ret = file->f_op->uring_cmd(ioucmd, issue_flags);
if (ret == -EAGAIN) {
- struct uring_cache *cache = req->async_data;
+ struct io_uring_cmd_data *cache = req->async_data;

if (ioucmd->sqe != (void *) cache)
memcpy(cache, ioucmd->sqe, uring_sqe_size(req->ctx));
diff --git a/io_uring/uring_cmd.h b/io_uring/uring_cmd.h
index 7dba0f1efc58..f6837ee0955b 100644
--- a/io_uring/uring_cmd.h
+++ b/io_uring/uring_cmd.h
@@ -1,9 +1,5 @@
// SPDX-License-Identifier: GPL-2.0

-struct uring_cache {
- struct io_uring_sqe sqes[2];
-};
-
int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags);
int io_uring_cmd_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);

--
2.45.2