diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2021-02-12 18:41:15 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-02-12 11:49:48 -0700 |
| commit | dc0eced5d92052a84d58df03a3bc6382f64fecfa (patch) | |
| tree | 6b4b4b6bd6708452c5f1211810ed3c8e490d7b06 /fs | |
| parent | 4fccfcbb733794634d4e873e7973c1847beca5bf (diff) | |
io_uring: don't check PF_EXITING from syscall
io_sq_thread_acquire_mm_files() can find a PF_EXITING task only when
it's called from task_work context. Don't check it in all other cases,
that are when we're in io_uring_enter().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 9c58be0579f3..66bbb0dc50af 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1213,8 +1213,6 @@ static int __io_sq_thread_acquire_mm_files(struct io_ring_ctx *ctx, static inline int io_sq_thread_acquire_mm_files(struct io_ring_ctx *ctx, struct io_kiocb *req) { - if (unlikely(current->flags & PF_EXITING)) - return -EFAULT; if (!(ctx->flags & IORING_SETUP_SQPOLL)) return 0; return __io_sq_thread_acquire_mm_files(ctx, req); @@ -2338,7 +2336,8 @@ static void __io_req_task_submit(struct io_kiocb *req) /* ctx stays valid until unlock, even if we drop all ours ctx->refs */ mutex_lock(&ctx->uring_lock); - if (!ctx->sqo_dead && !io_sq_thread_acquire_mm_files(ctx, req)) + if (!ctx->sqo_dead && !(current->flags & PF_EXITING) && + !io_sq_thread_acquire_mm_files(ctx, req)) __io_queue_sqe(req); else __io_req_task_cancel(req, -EFAULT); |