From: Jens Axboe <axboe@xxxxxxxxx>
[ Upstream commit cdb31c29d397a8076d81fd1458d091c647ef94ba ]
There's no reason to punt it unconditionally, we just need to ensure that
the submit lock grabbing is conditional.
Fixes: 05f3fb3c5397 ("io_uring: avoid ring quiesce for fixed file set unregister and update")
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/io_uring.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 187eb1907bde..699a08d724c2 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5919,19 +5919,16 @@ static int io_files_update(struct io_kiocb *req, unsigned int issue_flags)
struct io_uring_rsrc_update2 up;
int ret;
- if (issue_flags & IO_URING_F_NONBLOCK)
- return -EAGAIN;
-
up.offset = req->rsrc_update.offset;
up.data = req->rsrc_update.arg;
up.nr = 0;
up.tags = 0;
up.resv = 0;
- mutex_lock(&ctx->uring_lock);
+ io_ring_submit_lock(ctx, !(issue_flags & IO_URING_F_NONBLOCK));
ret = __io_register_rsrc_update(ctx, IORING_RSRC_FILE,
&up, req->rsrc_update.nr_args);
- mutex_unlock(&ctx->uring_lock);
+ io_ring_submit_unlock(ctx, !(issue_flags & IO_URING_F_NONBLOCK));
if (ret < 0)
req_set_fail(req);
--
2.33.0
