diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-16 16:18:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-16 16:18:53 -0700 |
| commit | 9cdbf6467424045617cd6e79dcaad06bb8efa31c (patch) | |
| tree | 7d9fd167cf16408c1dbb4e0f71b3bc60ad1b09c0 | |
| parent | 151501160401e2dc669ea7dac2c599b53f220c33 (diff) | |
| parent | c7d95613c7d6e003969722a290397b8271bdad17 (diff) | |
Merge tag 'io_uring-5.12-2021-04-16' of git://git.kernel.dk/linux-block
Pull io_uring fix from Jens Axboe:
"Fix for a potential hang at exit with SQPOLL from Pavel"
* tag 'io_uring-5.12-2021-04-16' of git://git.kernel.dk/linux-block:
io_uring: fix early sqd_list removal sqpoll hangs
| -rw-r--r-- | fs/io_uring.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index bd14327c8e7e..dff34975d86b 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -6754,6 +6754,9 @@ static int io_sq_thread(void *data) current->flags |= PF_NO_SETAFFINITY; mutex_lock(&sqd->lock); + /* a user may had exited before the thread started */ + io_run_task_work_head(&sqd->park_task_work); + while (!test_bit(IO_SQ_THREAD_SHOULD_STOP, &sqd->state)) { int ret; bool cap_entries, sqt_spin, needs_sched; @@ -6770,10 +6773,10 @@ static int io_sq_thread(void *data) } cond_resched(); mutex_lock(&sqd->lock); - if (did_sig) - break; io_run_task_work(); io_run_task_work_head(&sqd->park_task_work); + if (did_sig) + break; timeout = jiffies + sqd->sq_thread_idle; continue; } |