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io_uring: set completion results upfront

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Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2022-05-24 12:45:38 -06:00
parent e27f928ee1
commit de23077eda
2 changed files with 22 additions and 12 deletions
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21
io_uring/io_uring.c
View File

@ -91,6 +91,7 @@
#include "io-wq.h"
#include "io_uring_types.h"
#include "io_uring.h"
#define IORING_MAX_ENTRIES 32768
#define IORING_MAX_CQ_ENTRIES (2 * IORING_MAX_ENTRIES)
@ -1876,21 +1877,15 @@ static void io_req_complete_post(struct io_kiocb *req, s32 res, u32 cflags)
io_cqring_ev_posted(ctx);
}
static inline void io_req_complete_state(struct io_kiocb *req, s32 res,
u32 cflags)
{
req->cqe.res = res;
req->cqe.flags = cflags;
req->flags |= REQ_F_COMPLETE_INLINE;
}
static inline void __io_req_complete(struct io_kiocb *req, unsigned issue_flags,
s32 res, u32 cflags)
{
if (issue_flags & IO_URING_F_COMPLETE_DEFER)
io_req_complete_state(req, res, cflags);
else
if (issue_flags & IO_URING_F_COMPLETE_DEFER) {
io_req_set_res(req, res, cflags);
req->flags |= REQ_F_COMPLETE_INLINE;
} else {
io_req_complete_post(req, res, cflags);
}
}
static inline void io_req_complete(struct io_kiocb *req, s32 res)
@ -2749,7 +2744,8 @@ static inline void io_req_task_complete(struct io_kiocb *req, bool *locked)
int res = req->cqe.res;
if (*locked) {
io_req_complete_state(req, res, io_put_kbuf(req, 0));
io_req_set_res(req, res, io_put_kbuf(req, 0));
req->flags |= REQ_F_COMPLETE_INLINE;
io_req_add_compl_list(req);
} else {
io_req_complete_post(req, res,
@ -4394,6 +4390,7 @@ void io_uring_cmd_done(struct io_uring_cmd *ioucmd, ssize_t ret, ssize_t res2)
if (ret < 0)
req_set_fail(req);
io_req_set_res(req, 0, ret);
if (req->ctx->flags & IORING_SETUP_CQE32)
io_req_set_cqe32_extra(req, res2, 0);
io_req_complete(req, ret);

13
io_uring/io_uring.h Normal file
View File

@ -0,0 +1,13 @@
#ifndef IOU_CORE_H
#define IOU_CORE_H
#include <linux/errno.h>
#include "io_uring_types.h"
static inline void io_req_set_res(struct io_kiocb *req, s32 res, u32 cflags)
{
req->cqe.res = res;
req->cqe.flags = cflags;
}
#endif