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authorJens Axboe <axboe@kernel.dk>2019-03-13 12:15:01 -0600
committerJens Axboe <axboe@kernel.dk>2019-03-14 22:24:00 -0600
commitd530a402a114efcf6d2b88d7f628856dade5b90b (patch)
tree7007b61671e49a097c0728a79b2c7cdb9f4d00a2 /fs
parente0c5c576d5074b5bb7b1b4b59848c25ceb521331 (diff)
downloadlinux-d530a402a114efcf6d2b88d7f628856dade5b90b.tar.bz2
io_uring: add prepped flag
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 <axboe@kernel.dk>
Diffstat (limited to 'fs')
-rw-r--r--fs/io_uring.c11
1 files 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;