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[66.29.188.166]) by smtp.gmail.com with ESMTPSA id t10sm3192272pgo.27.2019.03.15.07.54.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 15 Mar 2019 07:54:52 -0700 (PDT) From: Jens Axboe To: linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org Cc: viro@ZenIV.linux.org.uk, Jens Axboe Subject: [PATCH 3/7] io_uring: add prepped flag Date: Fri, 15 Mar 2019 08:54:38 -0600 Message-Id: <20190315145442.21127-4-axboe@kernel.dk> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190315145442.21127-1-axboe@kernel.dk> References: <20190315145442.21127-1-axboe@kernel.dk> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org We currently use the fact that if ->ki_filp is already set, then we've done the prep. In preparation for moving the file assignment earlier, use a separate flag to tell whether the request has been prepped for IO or not. Signed-off-by: Jens Axboe --- fs/io_uring.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index caf39663466f..d259e8a6cb2e 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -214,6 +214,7 @@ struct io_kiocb { #define REQ_F_IOPOLL_COMPLETED 2 /* polled IO has completed */ #define REQ_F_FIXED_FILE 4 /* ctx owns file */ #define REQ_F_SEQ_PREV 8 /* sequential with previous */ +#define REQ_F_PREPPED 16 /* prep already done */ u64 user_data; u64 error; @@ -741,7 +742,7 @@ static int io_prep_rw(struct io_kiocb *req, const struct sqe_submit *s, int fd, ret; /* For -EAGAIN retry, everything is already prepped */ - if (kiocb->ki_filp) + if (req->flags & REQ_F_PREPPED) return 0; flags = READ_ONCE(sqe->flags); @@ -799,6 +800,7 @@ static int io_prep_rw(struct io_kiocb *req, const struct sqe_submit *s, } kiocb->ki_complete = io_complete_rw; } + req->flags |= REQ_F_PREPPED; return 0; out_fput: if (!(flags & IOSQE_FIXED_FILE)) { @@ -1099,8 +1101,8 @@ static int io_prep_fsync(struct io_kiocb *req, const struct io_uring_sqe *sqe) unsigned flags; int fd; - /* Prep already done */ - if (req->rw.ki_filp) + /* Prep already done (EAGAIN retry) */ + if (req->flags & REQ_F_PREPPED) return 0; if (unlikely(ctx->flags & IORING_SETUP_IOPOLL)) @@ -1122,6 +1124,7 @@ static int io_prep_fsync(struct io_kiocb *req, const struct io_uring_sqe *sqe) return -EBADF; } + req->flags |= REQ_F_PREPPED; return 0; } @@ -1632,8 +1635,6 @@ static int io_submit_sqe(struct io_ring_ctx *ctx, struct sqe_submit *s, if (unlikely(!req)) return -EAGAIN; - req->rw.ki_filp = NULL; - ret = __io_submit_sqe(ctx, req, s, true, state); if (ret == -EAGAIN) { struct io_uring_sqe *sqe_copy; -- 2.17.1