[PATCH 2/2] io_uring: wait for ->release() on rsrc resurrect
From: Pavel Begunkov <asml.silence@gmail.com>
Date: 2021-02-20 17:26:31
Also in:
io-uring
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
As with ctx refs, on resurrect wait for potentially concurrently running ->release(). Cc: <redacted> # 5.10+ Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- fs/io_uring.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 6ea4633e5ed5..c08d32523f79 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c@@ -7368,13 +7368,11 @@ static int io_rsrc_ref_quiesce(struct fixed_rsrc_data *data, flush_delayed_work(&ctx->rsrc_put_work); ret = wait_for_completion_interruptible(&data->done); - if (!ret) + if (!ret || !io_refs_resurrect(&data->refs, &data->done)) break; - percpu_ref_resurrect(&data->refs); io_sqe_rsrc_set_node(ctx, data, backup_node); backup_node = NULL; - reinit_completion(&data->done); mutex_unlock(&ctx->uring_lock); ret = io_run_task_work_sig(); mutex_lock(&ctx->uring_lock);
--
2.24.0