Merge tag 'fuse-update-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

Pull fuse updates from Miklos Szeredi:

 - Add mechanism for cleaning out unused, stale dentries; controlled via
   a module option (Luis Henriques)

 - Fix various bugs

 - Cleanups

* tag 'fuse-update-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: Uninitialized variable in fuse_epoch_work()
  fuse: fix io-uring list corruption for terminated non-committed requests
  fuse: signal that a fuse inode should exhibit local fs behaviors
  fuse: Always flush the page cache before FOPEN_DIRECT_IO write
  fuse: Invalidate the page cache after FOPEN_DIRECT_IO write
  fuse: rename 'namelen' to 'namesize'
  fuse: use strscpy instead of strcpy
  fuse: refactor fuse_conn_put() to remove negative logic.
  fuse: new work queue to invalidate dentries from old epochs
  fuse: new work queue to periodically invalidate expired dentries
  dcache: export shrink_dentry_list() and add new helper d_dispose_if_unused()
  fuse: add WARN_ON and comment for RCU revalidate
  fuse: Fix whitespace for fuse_uring_args_to_ring() comment
  fuse: missing copy_finish in fuse-over-io-uring argument copies
  fuse: fix readahead reclaim deadlock

1 files changed, 8 insertions, 4 deletions

diff --git a/fs/fuse/dev_uring.c b/fs/fuse/dev_uring.c
index f8c93dc45768..5ceb217ced1b 100644
--- a/fs/fuse/dev_uring.c
+++ b/fs/fuse/dev_uring.c
@@ -86,6 +86,7 @@ static void fuse_uring_req_end(struct fuse_ring_ent *ent, struct fuse_req *req,
 	lockdep_assert_not_held(&queue->lock);
 	spin_lock(&queue->lock);
 	ent->fuse_req = NULL;
+	list_del_init(&req->list);
 	if (test_bit(FR_BACKGROUND, &req->flags)) {
 		queue->active_background--;
 		spin_lock(&fc->bg_lock);
@@ -598,12 +599,14 @@ static int fuse_uring_copy_from_ring(struct fuse_ring *ring,
 	cs.is_uring = true;
 	cs.req = req;
 
-	return fuse_copy_out_args(&cs, args, ring_in_out.payload_sz);
+	err = fuse_copy_out_args(&cs, args, ring_in_out.payload_sz);
+	fuse_copy_finish(&cs);
+	return err;
 }
 
- /*
-  * Copy data from the req to the ring buffer
-  */
+/*
+ * Copy data from the req to the ring buffer
+ */
 static int fuse_uring_args_to_ring(struct fuse_ring *ring, struct fuse_req *req,
 				   struct fuse_ring_ent *ent)
 {
@@ -649,6 +652,7 @@ static int fuse_uring_args_to_ring(struct fuse_ring *ring, struct fuse_req *req,
 	/* copy the payload */
 	err = fuse_copy_args(&cs, num_args, args->in_pages,
 			     (struct fuse_arg *)in_args, 0);
+	fuse_copy_finish(&cs);
 	if (err) {
 		pr_info_ratelimited("%s fuse_copy_args failed\n", __func__);
 		return err;