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| author | Jens Axboe <axboe@kernel.dk> | 2020-01-17 21:15:34 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-01-21 03:04:07 +0300 |
| commit | e46a7950d362231a4d0b078af5f4c109b8e5ac9e (patch) | |
| tree | 5485e29e2b5ea91d059267e8e2d4a84185207d05 | |
| parent | b14cca0c84c760fbd39ad6bb7e1181e2df103d25 (diff) | |
| download | linux-e46a7950d362231a4d0b078af5f4c109b8e5ac9e.tar.xz | |
io_uring: file switch work needs to get flushed on exit
We currently flush early, but if we have something in progress and a
new switch is scheduled, we need to ensure to flush after our teardown
as well.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | fs/io_uring.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 46cc1bc48062..a0a58c181eaf 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -5089,11 +5089,14 @@ static int io_sqe_files_unregister(struct io_ring_ctx *ctx) return -ENXIO; /* protect against inflight atomic switch, which drops the ref */ - flush_work(&data->ref_work); percpu_ref_get(&data->refs); + /* wait for existing switches */ + flush_work(&data->ref_work); percpu_ref_kill_and_confirm(&data->refs, io_file_ref_kill); wait_for_completion(&data->done); percpu_ref_put(&data->refs); + /* flush potential new switch */ + flush_work(&data->ref_work); percpu_ref_exit(&data->refs); __io_sqe_files_unregister(ctx); |