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io_uring: replace s->needs_lock with s->in_async 

There is no function change, just to clean up the code, use s->in_async
to make the code know where it is.

Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jackie Liu 2019-10-09 09:19:59 +08:00 committed by Jens Axboe
parent 33a107f0a1
commit ba5290ccb6
1 changed files with 11 additions and 20 deletions
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31
fs/io_uring.c
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@ -271,7 +271,7 @@ struct sqe_submit {
unsigned short index;
u32 sequence;
bool has_user;
bool needs_lock;
bool in_async;
bool needs_fixed_file;
};
@ -1474,13 +1474,9 @@ static int io_read(struct io_kiocb *req, const struct sqe_submit *s,
ret2 = -EAGAIN;
/* Catch -EAGAIN return for forced non-blocking submission */
if (!force_nonblock || ret2 != -EAGAIN) {
kiocb_done(kiocb, ret2, nxt, s->needs_lock);
kiocb_done(kiocb, ret2, nxt, s->in_async);
} else {
/*
* If ->needs_lock is true, we're already in async
* context.
*/
if (!s->needs_lock)
if (!s->in_async)
io_async_list_note(READ, req, iov_count);
ret = -EAGAIN;
}
@ -1518,8 +1514,7 @@ static int io_write(struct io_kiocb *req, const struct sqe_submit *s,
ret = -EAGAIN;
if (force_nonblock && !(kiocb->ki_flags & IOCB_DIRECT)) {
/* If ->needs_lock is true, we're already in async context. */
if (!s->needs_lock)
if (!s->in_async)
io_async_list_note(WRITE, req, iov_count);
goto out_free;
}
@ -1548,13 +1543,9 @@ static int io_write(struct io_kiocb *req, const struct sqe_submit *s,
else
ret2 = loop_rw_iter(WRITE, file, kiocb, &iter);
if (!force_nonblock || ret2 != -EAGAIN) {
kiocb_done(kiocb, ret2, nxt, s->needs_lock);
kiocb_done(kiocb, ret2, nxt, s->in_async);
} else {
/*
* If ->needs_lock is true, we're already in async
* context.
*/
if (!s->needs_lock)
if (!s->in_async)
io_async_list_note(WRITE, req, iov_count);
ret = -EAGAIN;
}
@ -2152,10 +2143,10 @@ static int __io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
return -EAGAIN;
/* workqueue context doesn't hold uring_lock, grab it now */
if (s->needs_lock)
if (s->in_async)
mutex_lock(&ctx->uring_lock);
io_iopoll_req_issued(req);
if (s->needs_lock)
if (s->in_async)
mutex_unlock(&ctx->uring_lock);
}
@ -2220,7 +2211,7 @@ restart:
if (!ret) {
s->has_user = cur_mm != NULL;
s->needs_lock = true;
s->in_async = true;
do {
ret = __io_submit_sqe(ctx, req, s, &nxt, false);
/*
@ -2696,7 +2687,7 @@ out:
-EFAULT);
} else {
s.has_user = has_user;
s.needs_lock = true;
s.in_async = true;
s.needs_fixed_file = true;
io_submit_sqe(ctx, &s, statep, &link);
submitted++;
@ -2883,7 +2874,7 @@ static int io_ring_submit(struct io_ring_ctx *ctx, unsigned int to_submit)
out:
s.has_user = true;
s.needs_lock = false;
s.in_async = false;
s.needs_fixed_file = false;
submit++;
io_submit_sqe(ctx, &s, statep, &link);