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io_uring: don't pass def into io_req_work_grab_env 

Remove struct io_op_def *def parameter from io_req_work_grab_env(),
it's trivially deducible from req->opcode and fast. The API is
cleaner this way, and also helps the complier to understand
that it's a real constant and could be register-cached.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-06-29 19:18:40 +03:00 committed by Jens Axboe
parent ecfc517774
commit 351fd53595
1 changed files with 5 additions and 4 deletions
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9
fs/io_uring.c
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@ -1101,9 +1101,10 @@ static void __io_commit_cqring(struct io_ring_ctx *ctx)
}
}
static inline void io_req_work_grab_env(struct io_kiocb *req,
const struct io_op_def *def)
static inline void io_req_work_grab_env(struct io_kiocb *req)
{
const struct io_op_def *def = &io_op_defs[req->opcode];
if (!req->work.mm && def->needs_mm) {
mmgrab(current->mm);
req->work.mm = current->mm;
@ -1161,7 +1162,7 @@ static inline void io_prep_async_work(struct io_kiocb *req,
}
io_req_init_async(req);
io_req_work_grab_env(req, def);
io_req_work_grab_env(req);
*link = io_prep_linked_timeout(req);
}
@ -5255,7 +5256,7 @@ static int io_req_defer_prep(struct io_kiocb *req,
if (for_async || (req->flags & REQ_F_WORK_INITIALIZED)) {
io_req_init_async(req);
io_req_work_grab_env(req, &io_op_defs[req->opcode]);
io_req_work_grab_env(req);
}
switch (req->opcode) {