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| author | Pavel Begunkov <asml.silence@gmail.com> | 2021-02-04 22:22:46 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-02-04 22:42:58 +0300 |
| commit | aec18a57edad562d620f7d19016de1fc0cc2208c (patch) | |
| tree | d03300451204970ce615071839961d03c284f93a | |
| parent | d7e10d47691d1702db1cd1edcc689d3031eefc67 (diff) | |
| download | linux-aec18a57edad562d620f7d19016de1fc0cc2208c.tar.xz | |
io_uring: drop mm/files between task_work_submit
Since SQPOLL task can be shared and so task_work entries can be a mix of
them, we need to drop mm and files before trying to issue next request.
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | fs/io_uring.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 5d3348d66f06..1f68105a41ed 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2205,6 +2205,9 @@ static void __io_req_task_submit(struct io_kiocb *req) else __io_req_task_cancel(req, -EFAULT); mutex_unlock(&ctx->uring_lock); + + if (ctx->flags & IORING_SETUP_SQPOLL) + io_sq_thread_drop_mm_files(); } static void io_req_task_submit(struct callback_head *cb) |