hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

io_uring: don't do full *prep_worker() from io-wq 

io_prep_async_worker() called io_wq_assign_next() do many useless checks:
io_req_work_grab_env() was already called during prep, and @do_hashed
is not ever used. Add io_prep_next_work() -- simplified version, that
can be called io-wq.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-02-24 11:30:17 +03:00 committed by Jens Axboe
parent 5ea6216116
commit deb6dc0544
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
fs/io_uring.c
View File

@ -950,6 +950,17 @@ static inline void io_req_work_drop_env(struct io_kiocb *req)
}
}
static inline void io_prep_next_work(struct io_kiocb *req,
struct io_kiocb **link)
{
const struct io_op_def *def = &io_op_defs[req->opcode];
if (!(req->flags & REQ_F_ISREG) && def->unbound_nonreg_file)
req->work.flags |= IO_WQ_WORK_UNBOUND;
*link = io_prep_linked_timeout(req);
}
static inline bool io_prep_async_work(struct io_kiocb *req,
struct io_kiocb **link)
{
@ -2453,7 +2464,7 @@ static void io_wq_assign_next(struct io_wq_work **workptr, struct io_kiocb *nxt)
{
struct io_kiocb *link;
io_prep_async_work(nxt, &link);
io_prep_next_work(nxt, &link);
*workptr = &nxt->work;
if (link) {
nxt->work.flags |= IO_WQ_WORK_CB;