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io_uring: inline linked part of io_req_find_next

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Inline part of __io_req_find_next() that returns a request but doesn't
need io_disarm_next(). It's just two places, but makes links a bit
faster.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/4126d13f23d0e91b39b3558e16bd86cafa7fcef2.1631115443.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-09-08 16:40:51 +01:00 committed by Jens Axboe
parent 6b639522f6
commit d81499bfcd
1 changed files with 19 additions and 20 deletions
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39
fs/io_uring.c
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@ -2074,40 +2074,39 @@ static bool io_disarm_next(struct io_kiocb *req)
return posted;
}
static struct io_kiocb *__io_req_find_next(struct io_kiocb *req)
static void __io_req_find_next_prep(struct io_kiocb *req)
{
struct io_ring_ctx *ctx = req->ctx;
bool posted;
spin_lock(&ctx->completion_lock);
posted = io_disarm_next(req);
if (posted)
io_commit_cqring(req->ctx);
spin_unlock(&ctx->completion_lock);
if (posted)
io_cqring_ev_posted(ctx);
}
static inline struct io_kiocb *io_req_find_next(struct io_kiocb *req)
{
struct io_kiocb *nxt;
if (likely(!(req->flags & (REQ_F_LINK|REQ_F_HARDLINK))))
return NULL;
/*
* If LINK is set, we have dependent requests in this chain. If we
* didn't fail this request, queue the first one up, moving any other
* dependencies to the next request. In case of failure, fail the rest
* of the chain.
*/
if (req->flags & IO_DISARM_MASK) {
struct io_ring_ctx *ctx = req->ctx;
bool posted;
spin_lock(&ctx->completion_lock);
posted = io_disarm_next(req);
if (posted)
io_commit_cqring(req->ctx);
spin_unlock(&ctx->completion_lock);
if (posted)
io_cqring_ev_posted(ctx);
}
if (unlikely(req->flags & IO_DISARM_MASK))
__io_req_find_next_prep(req);
nxt = req->link;
req->link = NULL;
return nxt;
}
static inline struct io_kiocb *io_req_find_next(struct io_kiocb *req)
{
if (likely(!(req->flags & (REQ_F_LINK|REQ_F_HARDLINK))))
return NULL;
return __io_req_find_next(req);
}
static void ctx_flush_and_put(struct io_ring_ctx *ctx, bool *locked)
{
if (!ctx)