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io_uring-5.15-2021-10-01

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Merge tag 'io_uring-5.15-2021-10-01' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Two fixes in here:

   - The signal issue that was discussed start of this week (me).

   - Kill dead fasync support in io_uring. Looks like it was broken
     since io_uring was initially merged, and given that nobody has ever
     complained about it, let's just kill it (Pavel)"

* tag 'io_uring-5.15-2021-10-01' of git://git.kernel.dk/linux-block:
  io_uring: kill fasync
  io-wq: exclusively gate signal based exit on get_signal() return
This commit is contained in:
Linus Torvalds 2021-10-02 10:26:19 -07:00
commit 65893b49d8
2 changed files with 3 additions and 19 deletions
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5
fs/io-wq.c
View File

@ -584,10 +584,7 @@ loop:
if (!get_signal(&ksig))
continue;
if (fatal_signal_pending(current) ||
signal_group_exit(current->signal))
break;
continue;
break;
}
last_timeout = !ret;
}

17
fs/io_uring.c
View File

@ -403,7 +403,6 @@ struct io_ring_ctx {
struct wait_queue_head cq_wait;
unsigned cq_extra;
atomic_t cq_timeouts;
struct fasync_struct *cq_fasync;
unsigned cq_last_tm_flush;
} ____cacheline_aligned_in_smp;
@ -1614,10 +1613,8 @@ static void io_cqring_ev_posted(struct io_ring_ctx *ctx)
wake_up(&ctx->sq_data->wait);
if (io_should_trigger_evfd(ctx))
eventfd_signal(ctx->cq_ev_fd, 1);
if (waitqueue_active(&ctx->poll_wait)) {
if (waitqueue_active(&ctx->poll_wait))
wake_up_interruptible(&ctx->poll_wait);
kill_fasync(&ctx->cq_fasync, SIGIO, POLL_IN);
}
}
static void io_cqring_ev_posted_iopoll(struct io_ring_ctx *ctx)
@ -1631,10 +1628,8 @@ static void io_cqring_ev_posted_iopoll(struct io_ring_ctx *ctx)
}
if (io_should_trigger_evfd(ctx))
eventfd_signal(ctx->cq_ev_fd, 1);
if (waitqueue_active(&ctx->poll_wait)) {
if (waitqueue_active(&ctx->poll_wait))
wake_up_interruptible(&ctx->poll_wait);
kill_fasync(&ctx->cq_fasync, SIGIO, POLL_IN);
}
}
/* Returns true if there are no backlogged entries after the flush */
@ -9345,13 +9340,6 @@ static __poll_t io_uring_poll(struct file *file, poll_table *wait)
return mask;
}
static int io_uring_fasync(int fd, struct file *file, int on)
{
struct io_ring_ctx *ctx = file->private_data;
return fasync_helper(fd, file, on, &ctx->cq_fasync);
}
static int io_unregister_personality(struct io_ring_ctx *ctx, unsigned id)
{
const struct cred *creds;
@ -10145,7 +10133,6 @@ static const struct file_operations io_uring_fops = {
.mmap_capabilities = io_uring_nommu_mmap_capabilities,
#endif
.poll = io_uring_poll,
.fasync = io_uring_fasync,
#ifdef CONFIG_PROC_FS
.show_fdinfo = io_uring_show_fdinfo,
#endif