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-rw-r--r--include/linux/io_uring.h4
-rw-r--r--include/linux/io_uring_types.h2
-rw-r--r--io_uring/io_uring.c17
-rw-r--r--io_uring/register.c3
-rw-r--r--io_uring/timeout.c40
5 files changed, 36 insertions, 30 deletions
diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h
index e123d5e17b52..85fe4e6b275c 100644
--- a/include/linux/io_uring.h
+++ b/include/linux/io_uring.h
@@ -15,10 +15,8 @@ bool io_is_uring_fops(struct file *file);
static inline void io_uring_files_cancel(void)
{
- if (current->io_uring) {
- io_uring_unreg_ringfd();
+ if (current->io_uring)
__io_uring_cancel(false);
- }
}
static inline void io_uring_task_cancel(void)
{
diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h
index 011860ade268..fd4cdb0860a2 100644
--- a/include/linux/io_uring_types.h
+++ b/include/linux/io_uring_types.h
@@ -345,7 +345,7 @@ struct io_ring_ctx {
/* timeouts */
struct {
- spinlock_t timeout_lock;
+ raw_spinlock_t timeout_lock;
struct list_head timeout_list;
struct list_head ltimeout_list;
unsigned cq_last_tm_flush;
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 06ff41484e29..d3403c8216db 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -215,9 +215,9 @@ bool io_match_task_safe(struct io_kiocb *head, struct io_uring_task *tctx,
struct io_ring_ctx *ctx = head->ctx;
/* protect against races with linked timeouts */
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
matched = io_match_linked(head);
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
} else {
matched = io_match_linked(head);
}
@@ -333,7 +333,7 @@ static __cold struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p)
init_waitqueue_head(&ctx->cq_wait);
init_waitqueue_head(&ctx->poll_wq);
spin_lock_init(&ctx->completion_lock);
- spin_lock_init(&ctx->timeout_lock);
+ raw_spin_lock_init(&ctx->timeout_lock);
INIT_WQ_LIST(&ctx->iopoll_list);
INIT_LIST_HEAD(&ctx->io_buffers_comp);
INIT_LIST_HEAD(&ctx->defer_list);
@@ -498,10 +498,10 @@ static void io_prep_async_link(struct io_kiocb *req)
if (req->flags & REQ_F_LINK_TIMEOUT) {
struct io_ring_ctx *ctx = req->ctx;
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
io_for_each_link(cur, req)
io_prep_async_work(cur);
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
} else {
io_for_each_link(cur, req)
io_prep_async_work(cur);
@@ -514,7 +514,11 @@ static void io_queue_iowq(struct io_kiocb *req)
struct io_uring_task *tctx = req->tctx;
BUG_ON(!tctx);
- BUG_ON(!tctx->io_wq);
+
+ if ((current->flags & PF_KTHREAD) || !tctx->io_wq) {
+ io_req_task_queue_fail(req, -ECANCELED);
+ return;
+ }
/* init ->work of the whole link before punting */
io_prep_async_link(req);
@@ -3214,6 +3218,7 @@ end_wait:
void __io_uring_cancel(bool cancel_all)
{
+ io_uring_unreg_ringfd();
io_uring_cancel_generic(cancel_all, NULL);
}
diff --git a/io_uring/register.c b/io_uring/register.c
index 1e99c783abdf..fdd44914c39c 100644
--- a/io_uring/register.c
+++ b/io_uring/register.c
@@ -414,6 +414,9 @@ static int io_register_resize_rings(struct io_ring_ctx *ctx, void __user *arg)
if (ctx->flags & IORING_SETUP_SINGLE_ISSUER &&
current != ctx->submitter_task)
return -EEXIST;
+ /* limited to DEFER_TASKRUN for now */
+ if (!(ctx->flags & IORING_SETUP_DEFER_TASKRUN))
+ return -EINVAL;
if (copy_from_user(&p, arg, sizeof(p)))
return -EFAULT;
if (p.flags & ~RESIZE_FLAGS)
diff --git a/io_uring/timeout.c b/io_uring/timeout.c
index f3d502717aeb..bbe58638eca7 100644
--- a/io_uring/timeout.c
+++ b/io_uring/timeout.c
@@ -74,10 +74,10 @@ static void io_timeout_complete(struct io_kiocb *req, struct io_tw_state *ts)
if (!io_timeout_finish(timeout, data)) {
if (io_req_post_cqe(req, -ETIME, IORING_CQE_F_MORE)) {
/* re-arm timer */
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
list_add(&timeout->list, ctx->timeout_list.prev);
hrtimer_start(&data->timer, timespec64_to_ktime(data->ts), data->mode);
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
return;
}
}
@@ -109,7 +109,7 @@ __cold void io_flush_timeouts(struct io_ring_ctx *ctx)
u32 seq;
struct io_timeout *timeout, *tmp;
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
seq = ctx->cached_cq_tail - atomic_read(&ctx->cq_timeouts);
list_for_each_entry_safe(timeout, tmp, &ctx->timeout_list, list) {
@@ -134,7 +134,7 @@ __cold void io_flush_timeouts(struct io_ring_ctx *ctx)
io_kill_timeout(req, 0);
}
ctx->cq_last_tm_flush = seq;
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
}
static void io_req_tw_fail_links(struct io_kiocb *link, struct io_tw_state *ts)
@@ -200,9 +200,9 @@ void io_disarm_next(struct io_kiocb *req)
} else if (req->flags & REQ_F_LINK_TIMEOUT) {
struct io_ring_ctx *ctx = req->ctx;
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
link = io_disarm_linked_timeout(req);
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
if (link)
io_req_queue_tw_complete(link, -ECANCELED);
}
@@ -238,11 +238,11 @@ static enum hrtimer_restart io_timeout_fn(struct hrtimer *timer)
struct io_ring_ctx *ctx = req->ctx;
unsigned long flags;
- spin_lock_irqsave(&ctx->timeout_lock, flags);
+ raw_spin_lock_irqsave(&ctx->timeout_lock, flags);
list_del_init(&timeout->list);
atomic_set(&req->ctx->cq_timeouts,
atomic_read(&req->ctx->cq_timeouts) + 1);
- spin_unlock_irqrestore(&ctx->timeout_lock, flags);
+ raw_spin_unlock_irqrestore(&ctx->timeout_lock, flags);
if (!(data->flags & IORING_TIMEOUT_ETIME_SUCCESS))
req_set_fail(req);
@@ -285,9 +285,9 @@ int io_timeout_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd)
{
struct io_kiocb *req;
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
req = io_timeout_extract(ctx, cd);
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
if (IS_ERR(req))
return PTR_ERR(req);
@@ -330,7 +330,7 @@ static enum hrtimer_restart io_link_timeout_fn(struct hrtimer *timer)
struct io_ring_ctx *ctx = req->ctx;
unsigned long flags;
- spin_lock_irqsave(&ctx->timeout_lock, flags);
+ raw_spin_lock_irqsave(&ctx->timeout_lock, flags);
prev = timeout->head;
timeout->head = NULL;
@@ -345,7 +345,7 @@ static enum hrtimer_restart io_link_timeout_fn(struct hrtimer *timer)
}
list_del(&timeout->list);
timeout->prev = prev;
- spin_unlock_irqrestore(&ctx->timeout_lock, flags);
+ raw_spin_unlock_irqrestore(&ctx->timeout_lock, flags);
req->io_task_work.func = io_req_task_link_timeout;
io_req_task_work_add(req);
@@ -472,12 +472,12 @@ int io_timeout_remove(struct io_kiocb *req, unsigned int issue_flags)
} else {
enum hrtimer_mode mode = io_translate_timeout_mode(tr->flags);
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
if (tr->ltimeout)
ret = io_linked_timeout_update(ctx, tr->addr, &tr->ts, mode);
else
ret = io_timeout_update(ctx, tr->addr, &tr->ts, mode);
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
}
if (ret < 0)
@@ -572,7 +572,7 @@ int io_timeout(struct io_kiocb *req, unsigned int issue_flags)
struct list_head *entry;
u32 tail, off = timeout->off;
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
/*
* sqe->off holds how many events that need to occur for this
@@ -611,7 +611,7 @@ add:
list_add(&timeout->list, entry);
data->timer.function = io_timeout_fn;
hrtimer_start(&data->timer, timespec64_to_ktime(data->ts), data->mode);
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
return IOU_ISSUE_SKIP_COMPLETE;
}
@@ -620,7 +620,7 @@ void io_queue_linked_timeout(struct io_kiocb *req)
struct io_timeout *timeout = io_kiocb_to_cmd(req, struct io_timeout);
struct io_ring_ctx *ctx = req->ctx;
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
/*
* If the back reference is NULL, then our linked request finished
* before we got a chance to setup the timer
@@ -633,7 +633,7 @@ void io_queue_linked_timeout(struct io_kiocb *req)
data->mode);
list_add_tail(&timeout->list, &ctx->ltimeout_list);
}
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
/* drop submission reference */
io_put_req(req);
}
@@ -668,7 +668,7 @@ __cold bool io_kill_timeouts(struct io_ring_ctx *ctx, struct io_uring_task *tctx
* timeout_lockfirst to keep locking ordering.
*/
spin_lock(&ctx->completion_lock);
- spin_lock_irq(&ctx->timeout_lock);
+ raw_spin_lock_irq(&ctx->timeout_lock);
list_for_each_entry_safe(timeout, tmp, &ctx->timeout_list, list) {
struct io_kiocb *req = cmd_to_io_kiocb(timeout);
@@ -676,7 +676,7 @@ __cold bool io_kill_timeouts(struct io_ring_ctx *ctx, struct io_uring_task *tctx
io_kill_timeout(req, -ECANCELED))
canceled++;
}
- spin_unlock_irq(&ctx->timeout_lock);
+ raw_spin_unlock_irq(&ctx->timeout_lock);
spin_unlock(&ctx->completion_lock);
return canceled != 0;
}