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| author |   Pavel Begunkov <asml.silence@gmail.com> | 2021-02-11 18:28:22 +0000 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-02-11 11:41:49 -0700 |
| commit | 23faba36ce287e4af9018dea51893a1067701508 (patch) | |
| tree | 11e5142c563325f1500da9376d97b3453a9e2a22 /fs | |
| parent | io_uring: simplify iopoll reissuing (diff) | |
| download | wireguard-linux-23faba36ce287e4af9018dea51893a1067701508.tar.xz wireguard-linux-23faba36ce287e4af9018dea51893a1067701508.zip | |
io_uring: move res check out of io_rw_reissue()
We pass return code into io_rw_reissue() only to be able to check if it's
-EAGAIN. That's not the cleanest approach and may prevent inlining of the
non-EAGAIN fast path, so do it at call sites.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 18e449b5d632..c873ec113bcc 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1029,7 +1029,7 @@ static struct fixed_rsrc_ref_node *alloc_fixed_rsrc_ref_node( static void init_fixed_file_ref_node(struct io_ring_ctx *ctx, struct fixed_rsrc_ref_node *ref_node); -static bool io_rw_reissue(struct io_kiocb *req, long res); +static bool io_rw_reissue(struct io_kiocb *req); static void io_cqring_fill_event(struct io_kiocb *req, long res); static void io_put_req(struct io_kiocb *req); static void io_put_req_deferred(struct io_kiocb *req, int nr); @@ -2578,7 +2578,7 @@ static void io_iopoll_complete(struct io_ring_ctx *ctx, unsigned int *nr_events, if (READ_ONCE(req->result) == -EAGAIN) { req->iopoll_completed = 0; - if (io_rw_reissue(req, -EAGAIN)) + if (io_rw_reissue(req)) continue; } @@ -2812,15 +2812,12 @@ static bool io_resubmit_prep(struct io_kiocb *req) } #endif -static bool io_rw_reissue(struct io_kiocb *req, long res) +static bool io_rw_reissue(struct io_kiocb *req) { #ifdef CONFIG_BLOCK - umode_t mode; + umode_t mode = file_inode(req->file)->i_mode; int ret; - if (res != -EAGAIN && res != -EOPNOTSUPP) - return false; - mode = file_inode(req->file)->i_mode; if (!S_ISBLK(mode) && !S_ISREG(mode)) return false; if ((req->flags & REQ_F_NOWAIT) || io_wq_current_is_worker()) @@ -2843,8 +2840,10 @@ static bool io_rw_reissue(struct io_kiocb *req, long res) static void __io_complete_rw(struct io_kiocb *req, long res, long res2, unsigned int issue_flags) { - if (!io_rw_reissue(req, res)) - io_complete_rw_common(&req->rw.kiocb, res, issue_flags); + if ((res == -EAGAIN || res == -EOPNOTSUPP) && io_rw_reissue(req)) + return; + + io_complete_rw_common(&req->rw.kiocb, res, issue_flags); } static void io_complete_rw(struct kiocb *kiocb, long res, long res2) |