[PATCH v2 1/5] io_uring: remove @nxt from the handlers

Pavel Begunkov
2020-02-28T23:38:53Z

After io_put_req_find_next() fix, no opcode handler can return non-NULL
nxt, that's because there is always a submission ref, which keeps them
from doing that. Remove @nxt from them, it's intrusive but
straightforward.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
fs/io_uring.c | 245 ++++++++++++++++++--------------------------------
1 file changed, 86 insertions(+), 159 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 8d8d93adb9c2..ee75e503964d 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1815,17 +1815,6 @@ static void io_complete_rw(struct kiocb *kiocb, long res, long res2)
io_put_req(req);
}

-static struct io_kiocb *__io_complete_rw(struct kiocb *kiocb, long res)
-{
- struct io_kiocb *req = container_of(kiocb, struct io_kiocb, rw.kiocb);
- struct io_kiocb *nxt = NULL;
-
- io_complete_rw_common(kiocb, res);
- io_put_req_find_next(req, &nxt);
-
- return nxt;
-}
-
static void io_complete_rw_iopoll(struct kiocb *kiocb, long res, long res2)
{
struct io_kiocb *req = container_of(kiocb, struct io_kiocb, rw.kiocb);
@@ -2020,14 +2009,14 @@ static inline void io_rw_done(struct kiocb *kiocb, ssize_t ret)
}
}

-static void kiocb_done(struct kiocb *kiocb, ssize_t ret, struct io_kiocb **nxt)
+static void kiocb_done(struct kiocb *kiocb, ssize_t ret)
{
struct io_kiocb *req = container_of(kiocb, struct io_kiocb, rw.kiocb);

if (req->flags & REQ_F_CUR_POS)
req->file->f_pos = kiocb->ki_pos;
if (ret >= 0 && kiocb->ki_complete == io_complete_rw)
- *nxt = __io_complete_rw(kiocb, ret);
+ io_complete_rw(kiocb, ret, 0);
else
io_rw_done(kiocb, ret);
}
@@ -2276,8 +2265,7 @@ static int io_read_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe,
return 0;
}

-static int io_read(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_read(struct io_kiocb *req, bool force_nonblock)
{
struct iovec inline_vecs[UIO_FASTIOV], *iovec = inline_vecs;
struct kiocb *kiocb = &req->rw.kiocb;
@@ -2317,7 +2305,7 @@ static int io_read(struct io_kiocb *req, struct io_kiocb **nxt,

/* Catch -EAGAIN return for forced non-blocking submission */
if (!force_nonblock || ret2 != -EAGAIN) {
- kiocb_done(kiocb, ret2, nxt);
+ kiocb_done(kiocb, ret2);
} else {
copy_iov:
ret = io_setup_async_rw(req, io_size, iovec,
@@ -2366,8 +2354,7 @@ static int io_write_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe,
return 0;
}

-static int io_write(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_write(struct io_kiocb *req, bool force_nonblock)
{
struct iovec inline_vecs[UIO_FASTIOV], *iovec = inline_vecs;
struct kiocb *kiocb = &req->rw.kiocb;
@@ -2431,7 +2418,7 @@ static int io_write(struct io_kiocb *req, struct io_kiocb **nxt,
if (ret2 == -EOPNOTSUPP && (kiocb->ki_flags & IOCB_NOWAIT))
ret2 = -EAGAIN;
if (!force_nonblock || ret2 != -EAGAIN) {
- kiocb_done(kiocb, ret2, nxt);
+ kiocb_done(kiocb, ret2);
} else {
copy_iov:
ret = io_setup_async_rw(req, io_size, iovec,
@@ -2488,8 +2475,7 @@ static bool io_splice_punt(struct file *file)
return !(file->f_mode & O_NONBLOCK);
}

-static int io_splice(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_splice(struct io_kiocb *req, bool force_nonblock)
{
struct io_splice *sp = &req->splice;
struct file *in = sp->file_in;
@@ -2516,7 +2502,7 @@ static int io_splice(struct io_kiocb *req, struct io_kiocb **nxt,
io_cqring_add_event(req, ret);
if (ret != sp->len)
req_set_fail_links(req);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
}

@@ -2568,28 +2554,7 @@ static bool io_req_cancelled(struct io_kiocb *req)
return false;
}

-static void io_link_work_cb(struct io_wq_work **workptr)
-{
- struct io_wq_work *work = *workptr;
- struct io_kiocb *link = work->data;
-
- io_queue_linked_timeout(link);
- io_wq_submit_work(workptr);
-}
-
-static void io_wq_assign_next(struct io_wq_work **workptr, struct io_kiocb *nxt)
-{
- struct io_kiocb *link;
-
- io_prep_next_work(nxt, &link);
- *workptr = &nxt->work;
- if (link) {
- nxt->work.func = io_link_work_cb;
- nxt->work.data = link;
- }
-}
-
-static void __io_fsync(struct io_kiocb *req, struct io_kiocb **nxt)
+static void __io_fsync(struct io_kiocb *req)
{
loff_t end = req->sync.off + req->sync.len;
int ret;
@@ -2600,23 +2565,19 @@ static void __io_fsync(struct io_kiocb *req, struct io_kiocb **nxt)
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
}

static void io_fsync_finish(struct io_wq_work **workptr)
{
struct io_kiocb *req = container_of(*workptr, struct io_kiocb, work);
- struct io_kiocb *nxt = NULL;

if (io_req_cancelled(req))
return;
- __io_fsync(req, &nxt);
- if (nxt)
- io_wq_assign_next(workptr, nxt);
+ __io_fsync(req);
}

-static int io_fsync(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_fsync(struct io_kiocb *req, bool force_nonblock)
{
/* fsync always requires a blocking context */
if (force_nonblock) {
@@ -2624,11 +2585,11 @@ static int io_fsync(struct io_kiocb *req, struct io_kiocb **nxt,
req->work.func = io_fsync_finish;
return -EAGAIN;
}
- __io_fsync(req, nxt);
+ __io_fsync(req);
return 0;
}

-static void __io_fallocate(struct io_kiocb *req, struct io_kiocb **nxt)
+static void __io_fallocate(struct io_kiocb *req)
{
int ret;

@@ -2640,17 +2601,14 @@ static void __io_fallocate(struct io_kiocb *req, struct io_kiocb **nxt)
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
}

static void io_fallocate_finish(struct io_wq_work **workptr)
{
struct io_kiocb *req = container_of(*workptr, struct io_kiocb, work);
- struct io_kiocb *nxt = NULL;

- __io_fallocate(req, &nxt);
- if (nxt)
- io_wq_assign_next(workptr, nxt);
+ __io_fallocate(req);
}

static int io_fallocate_prep(struct io_kiocb *req,
@@ -2665,8 +2623,7 @@ static int io_fallocate_prep(struct io_kiocb *req,
return 0;
}

-static int io_fallocate(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_fallocate(struct io_kiocb *req, bool force_nonblock)
{
/* fallocate always requiring blocking context */
if (force_nonblock) {
@@ -2675,7 +2632,7 @@ static int io_fallocate(struct io_kiocb *req, struct io_kiocb **nxt,
return -EAGAIN;
}

- __io_fallocate(req, nxt);
+ __io_fallocate(req);
return 0;
}

@@ -2748,8 +2705,7 @@ static int io_openat2_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
return 0;
}

-static int io_openat2(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_openat2(struct io_kiocb *req, bool force_nonblock)
{
struct open_flags op;
struct file *file;
@@ -2780,15 +2736,14 @@ static int io_openat2(struct io_kiocb *req, struct io_kiocb **nxt,
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
}

-static int io_openat(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_openat(struct io_kiocb *req, bool force_nonblock)
{
req->open.how = build_open_how(req->open.how.flags, req->open.how.mode);
- return io_openat2(req, nxt, force_nonblock);
+ return io_openat2(req, force_nonblock);
}

static int io_epoll_ctl_prep(struct io_kiocb *req,
@@ -2816,8 +2771,7 @@ static int io_epoll_ctl_prep(struct io_kiocb *req,
#endif
}

-static int io_epoll_ctl(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_epoll_ctl(struct io_kiocb *req, bool force_nonblock)
{
#if defined(CONFIG_EPOLL)
struct io_epoll *ie = &req->epoll;
@@ -2830,7 +2784,7 @@ static int io_epoll_ctl(struct io_kiocb *req, struct io_kiocb **nxt,
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
#else
return -EOPNOTSUPP;
@@ -2852,8 +2806,7 @@ static int io_madvise_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
#endif
}

-static int io_madvise(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_madvise(struct io_kiocb *req, bool force_nonblock)
{
#if defined(CONFIG_ADVISE_SYSCALLS) && defined(CONFIG_MMU)
struct io_madvise *ma = &req->madvise;
@@ -2866,7 +2819,7 @@ static int io_madvise(struct io_kiocb *req, struct io_kiocb **nxt,
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
#else
return -EOPNOTSUPP;
@@ -2884,8 +2837,7 @@ static int io_fadvise_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
return 0;
}

-static int io_fadvise(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_fadvise(struct io_kiocb *req, bool force_nonblock)
{
struct io_fadvise *fa = &req->fadvise;
int ret;
@@ -2905,7 +2857,7 @@ static int io_fadvise(struct io_kiocb *req, struct io_kiocb **nxt,
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
}

@@ -2942,8 +2894,7 @@ static int io_statx_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
return 0;
}

-static int io_statx(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_statx(struct io_kiocb *req, bool force_nonblock)
{
struct io_open *ctx = &req->open;
unsigned lookup_flags;
@@ -2980,7 +2931,7 @@ static int io_statx(struct io_kiocb *req, struct io_kiocb **nxt,
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
}

@@ -3007,7 +2958,7 @@ static int io_close_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
}

/* only called when __close_fd_get_file() is done */
-static void __io_close_finish(struct io_kiocb *req, struct io_kiocb **nxt)
+static void __io_close_finish(struct io_kiocb *req)
{
int ret;

@@ -3016,22 +2967,18 @@ static void __io_close_finish(struct io_kiocb *req, struct io_kiocb **nxt)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
fput(req->close.put_file);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
}

static void io_close_finish(struct io_wq_work **workptr)
{
struct io_kiocb *req = container_of(*workptr, struct io_kiocb, work);
- struct io_kiocb *nxt = NULL;

/* not cancellable, don't do io_req_cancelled() */
- __io_close_finish(req, &nxt);
- if (nxt)
- io_wq_assign_next(workptr, nxt);
+ __io_close_finish(req);
}

-static int io_close(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_close(struct io_kiocb *req, bool force_nonblock)
{
int ret;

@@ -3048,7 +2995,7 @@ static int io_close(struct io_kiocb *req, struct io_kiocb **nxt,
* No ->flush(), safely close from here and just punt the
* fput() to async context.
*/
- __io_close_finish(req, nxt);
+ __io_close_finish(req);
return 0;
eagain:
req->work.func = io_close_finish;
@@ -3079,7 +3026,7 @@ static int io_prep_sfr(struct io_kiocb *req, const struct io_uring_sqe *sqe)
return 0;
}

-static void __io_sync_file_range(struct io_kiocb *req, struct io_kiocb **nxt)
+static void __io_sync_file_range(struct io_kiocb *req)
{
int ret;

@@ -3088,24 +3035,20 @@ static void __io_sync_file_range(struct io_kiocb *req, struct io_kiocb **nxt)
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
}

static void io_sync_file_range_finish(struct io_wq_work **workptr)
{
struct io_kiocb *req = container_of(*workptr, struct io_kiocb, work);
- struct io_kiocb *nxt = NULL;

if (io_req_cancelled(req))
return;
- __io_sync_file_range(req, &nxt);
- if (nxt)
- io_wq_assign_next(workptr, nxt);
+ __io_sync_file_range(req);
}

-static int io_sync_file_range(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_sync_file_range(struct io_kiocb *req, bool force_nonblock)
{
/* sync_file_range always requires a blocking context */
if (force_nonblock) {
@@ -3114,7 +3057,7 @@ static int io_sync_file_range(struct io_kiocb *req, struct io_kiocb **nxt,
return -EAGAIN;
}

- __io_sync_file_range(req, nxt);
+ __io_sync_file_range(req);
return 0;
}

@@ -3166,8 +3109,7 @@ static int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
#endif
}

-static int io_sendmsg(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_sendmsg(struct io_kiocb *req, bool force_nonblock)
{
#if defined(CONFIG_NET)
struct io_async_msghdr *kmsg = NULL;
@@ -3221,15 +3163,14 @@ static int io_sendmsg(struct io_kiocb *req, struct io_kiocb **nxt,
io_cqring_add_event(req, ret);
if (ret < 0)
req_set_fail_links(req);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
#else
return -EOPNOTSUPP;
#endif
}

-static int io_send(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_send(struct io_kiocb *req, bool force_nonblock)
{
#if defined(CONFIG_NET)
struct socket *sock;
@@ -3272,7 +3213,7 @@ static int io_send(struct io_kiocb *req, struct io_kiocb **nxt,
io_cqring_add_event(req, ret);
if (ret < 0)
req_set_fail_links(req);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
#else
return -EOPNOTSUPP;
@@ -3313,8 +3254,7 @@ static int io_recvmsg_prep(struct io_kiocb *req,
#endif
}

-static int io_recvmsg(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_recvmsg(struct io_kiocb *req, bool force_nonblock)
{
#if defined(CONFIG_NET)
struct io_async_msghdr *kmsg = NULL;
@@ -3370,15 +3310,14 @@ static int io_recvmsg(struct io_kiocb *req, struct io_kiocb **nxt,
io_cqring_add_event(req, ret);
if (ret < 0)
req_set_fail_links(req);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
#else
return -EOPNOTSUPP;
#endif
}

-static int io_recv(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_recv(struct io_kiocb *req, bool force_nonblock)
{
#if defined(CONFIG_NET)
struct socket *sock;
@@ -3422,7 +3361,7 @@ static int io_recv(struct io_kiocb *req, struct io_kiocb **nxt,
io_cqring_add_event(req, ret);
if (ret < 0)
req_set_fail_links(req);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
#else
return -EOPNOTSUPP;
@@ -3450,8 +3389,7 @@ static int io_accept_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
}

#if defined(CONFIG_NET)
-static int __io_accept(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int __io_accept(struct io_kiocb *req, bool force_nonblock)
{
struct io_accept *accept = &req->accept;
unsigned file_flags;
@@ -3467,32 +3405,28 @@ static int __io_accept(struct io_kiocb *req, struct io_kiocb **nxt,
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
}

static void io_accept_finish(struct io_wq_work **workptr)
{
struct io_kiocb *req = container_of(*workptr, struct io_kiocb, work);
- struct io_kiocb *nxt = NULL;

io_put_req(req);

if (io_req_cancelled(req))
return;
- __io_accept(req, &nxt, false);
- if (nxt)
- io_wq_assign_next(workptr, nxt);
+ __io_accept(req, false);
}
#endif

-static int io_accept(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_accept(struct io_kiocb *req, bool force_nonblock)
{
#if defined(CONFIG_NET)
int ret;

- ret = __io_accept(req, nxt, force_nonblock);
+ ret = __io_accept(req, force_nonblock);
if (ret == -EAGAIN && force_nonblock) {
req->work.func = io_accept_finish;
return -EAGAIN;
@@ -3527,8 +3461,7 @@ static int io_connect_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
#endif
}

-static int io_connect(struct io_kiocb *req, struct io_kiocb **nxt,
- bool force_nonblock)
+static int io_connect(struct io_kiocb *req, bool force_nonblock)
{
#if defined(CONFIG_NET)
struct io_async_ctx __io, *io;
@@ -3566,7 +3499,7 @@ static int io_connect(struct io_kiocb *req, struct io_kiocb **nxt,
if (ret < 0)
req_set_fail_links(req);
io_cqring_add_event(req, ret);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
return 0;
#else
return -EOPNOTSUPP;
@@ -3957,7 +3890,7 @@ static int io_poll_add_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe
return 0;
}

-static int io_poll_add(struct io_kiocb *req, struct io_kiocb **nxt)
+static int io_poll_add(struct io_kiocb *req)
{
struct io_poll_iocb *poll = &req->poll;
struct io_ring_ctx *ctx = req->ctx;
@@ -3979,7 +3912,7 @@ static int io_poll_add(struct io_kiocb *req, struct io_kiocb **nxt)

if (mask) {
io_cqring_ev_posted(ctx);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
}
return ipt.error;
}
@@ -4228,7 +4161,7 @@ static int io_async_cancel_one(struct io_ring_ctx *ctx, void *sqe_addr)

static void io_async_find_and_cancel(struct io_ring_ctx *ctx,
struct io_kiocb *req, __u64 sqe_addr,
- struct io_kiocb **nxt, int success_ret)
+ int success_ret)
{
unsigned long flags;
int ret;
@@ -4254,7 +4187,7 @@ static void io_async_find_and_cancel(struct io_ring_ctx *ctx,

if (ret < 0)
req_set_fail_links(req);
- io_put_req_find_next(req, nxt);
+ io_put_req(req);
}

static int io_async_cancel_prep(struct io_kiocb *req,
@@ -4270,11 +4203,11 @@ static int io_async_cancel_prep(struct io_kiocb *req,
return 0;
}

-static int io_async_cancel(struct io_kiocb *req, struct io_kiocb **nxt)
+static int io_async_cancel(struct io_kiocb *req)
{
struct io_ring_ctx *ctx = req->ctx;

- io_async_find_and_cancel(ctx, req, req->cancel.addr, nxt, 0);
+ io_async_find_and_cancel(ctx, req, req->cancel.addr, 0);
return 0;
}

@@ -4481,7 +4414,7 @@ static void io_cleanup_req(struct io_kiocb *req)
}

static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
- struct io_kiocb **nxt, bool force_nonblock)
+ bool force_nonblock)
{
struct io_ring_ctx *ctx = req->ctx;
int ret;
@@ -4498,7 +4431,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret < 0)
break;
}
- ret = io_read(req, nxt, force_nonblock);
+ ret = io_read(req, force_nonblock);
break;
case IORING_OP_WRITEV:
case IORING_OP_WRITE_FIXED:
@@ -4508,7 +4441,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret < 0)
break;
}
- ret = io_write(req, nxt, force_nonblock);
+ ret = io_write(req, force_nonblock);
break;
case IORING_OP_FSYNC:
if (sqe) {
@@ -4516,7 +4449,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret < 0)
break;
}
- ret = io_fsync(req, nxt, force_nonblock);
+ ret = io_fsync(req, force_nonblock);
break;
case IORING_OP_POLL_ADD:
if (sqe) {
@@ -4524,7 +4457,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_poll_add(req, nxt);
+ ret = io_poll_add(req);
break;
case IORING_OP_POLL_REMOVE:
if (sqe) {
@@ -4540,7 +4473,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret < 0)
break;
}
- ret = io_sync_file_range(req, nxt, force_nonblock);
+ ret = io_sync_file_range(req, force_nonblock);
break;
case IORING_OP_SENDMSG:
case IORING_OP_SEND:
@@ -4550,9 +4483,9 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
break;
}
if (req->opcode == IORING_OP_SENDMSG)
- ret = io_sendmsg(req, nxt, force_nonblock);
+ ret = io_sendmsg(req, force_nonblock);
else
- ret = io_send(req, nxt, force_nonblock);
+ ret = io_send(req, force_nonblock);
break;
case IORING_OP_RECVMSG:
case IORING_OP_RECV:
@@ -4562,9 +4495,9 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
break;
}
if (req->opcode == IORING_OP_RECVMSG)
- ret = io_recvmsg(req, nxt, force_nonblock);
+ ret = io_recvmsg(req, force_nonblock);
else
- ret = io_recv(req, nxt, force_nonblock);
+ ret = io_recv(req, force_nonblock);
break;
case IORING_OP_TIMEOUT:
if (sqe) {
@@ -4588,7 +4521,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_accept(req, nxt, force_nonblock);
+ ret = io_accept(req, force_nonblock);
break;
case IORING_OP_CONNECT:
if (sqe) {
@@ -4596,7 +4529,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_connect(req, nxt, force_nonblock);
+ ret = io_connect(req, force_nonblock);
break;
case IORING_OP_ASYNC_CANCEL:
if (sqe) {
@@ -4604,7 +4537,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_async_cancel(req, nxt);
+ ret = io_async_cancel(req);
break;
case IORING_OP_FALLOCATE:
if (sqe) {
@@ -4612,7 +4545,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_fallocate(req, nxt, force_nonblock);
+ ret = io_fallocate(req, force_nonblock);
break;
case IORING_OP_OPENAT:
if (sqe) {
@@ -4620,7 +4553,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_openat(req, nxt, force_nonblock);
+ ret = io_openat(req, force_nonblock);
break;
case IORING_OP_CLOSE:
if (sqe) {
@@ -4628,7 +4561,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_close(req, nxt, force_nonblock);
+ ret = io_close(req, force_nonblock);
break;
case IORING_OP_FILES_UPDATE:
if (sqe) {
@@ -4644,7 +4577,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_statx(req, nxt, force_nonblock);
+ ret = io_statx(req, force_nonblock);
break;
case IORING_OP_FADVISE:
if (sqe) {
@@ -4652,7 +4585,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_fadvise(req, nxt, force_nonblock);
+ ret = io_fadvise(req, force_nonblock);
break;
case IORING_OP_MADVISE:
if (sqe) {
@@ -4660,7 +4593,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_madvise(req, nxt, force_nonblock);
+ ret = io_madvise(req, force_nonblock);
break;
case IORING_OP_OPENAT2:
if (sqe) {
@@ -4668,7 +4601,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_openat2(req, nxt, force_nonblock);
+ ret = io_openat2(req, force_nonblock);
break;
case IORING_OP_EPOLL_CTL:
if (sqe) {
@@ -4676,7 +4609,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret)
break;
}
- ret = io_epoll_ctl(req, nxt, force_nonblock);
+ ret = io_epoll_ctl(req, force_nonblock);
break;
case IORING_OP_SPLICE:
if (sqe) {
@@ -4684,7 +4617,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (ret < 0)
break;
}
- ret = io_splice(req, nxt, force_nonblock);
+ ret = io_splice(req, force_nonblock);
break;
default:
ret = -EINVAL;
@@ -4717,7 +4650,6 @@ static void io_wq_submit_work(struct io_wq_work **workptr)
{
struct io_wq_work *work = *workptr;
struct io_kiocb *req = container_of(work, struct io_kiocb, work);
- struct io_kiocb *nxt = NULL;
int ret = 0;

/* if NO_CANCEL is set, we must still run the work */
@@ -4728,7 +4660,7 @@ static void io_wq_submit_work(struct io_wq_work **workptr)

if (!ret) {
do {
- ret = io_issue_sqe(req, NULL, &nxt, false);
+ ret = io_issue_sqe(req, NULL, false);
/*
* We can get EAGAIN for polled IO even though we're
* forcing a sync submission from here, since we can't
@@ -4748,10 +4680,6 @@ static void io_wq_submit_work(struct io_wq_work **workptr)
io_cqring_add_event(req, ret);
io_put_req(req);
}
-
- /* if a dependent link is ready, pass it back */
- if (!ret && nxt)
- io_wq_assign_next(workptr, nxt);
}

static int io_req_needs_file(struct io_kiocb *req, int fd)
@@ -4877,8 +4805,7 @@ static enum hrtimer_restart io_link_timeout_fn(struct hrtimer *timer)

if (prev) {
req_set_fail_links(prev);
- io_async_find_and_cancel(ctx, req, prev->user_data, NULL,
- -ETIME);
+ io_async_find_and_cancel(ctx, req, prev->user_data, -ETIME);
io_put_req(prev);
} else {
io_cqring_add_event(req, -ETIME);
@@ -4947,7 +4874,7 @@ static void __io_queue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe)
old_creds = override_creds(req->work.creds);
}

- ret = io_issue_sqe(req, sqe, &nxt, true);
+ ret = io_issue_sqe(req, sqe, true);

/*
* We async punt it if the file wasn't marked NOWAIT, or if the file
--
2.24.0