From 9732069238128212a2c2b9b449a88482e627157b Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 26 Jul 2018 16:13:11 +0200 Subject: fuse: umount should wait for all requests commit b8f95e5d13f5f0191dcb4b9113113d241636e7cb upstream. fuse_abort_conn() does not guarantee that all async requests have actually finished aborting (i.e. their ->end() function is called). This could actually result in still used inodes after umount. Add a helper to wait until all requests are fully done. This is done by looking at the "num_waiting" counter. When this counter drops to zero, we can be sure that no more requests are outstanding. Fixes: 0d8e84b0432b ("fuse: simplify request abort") Cc: # v4.2 Signed-off-by: Miklos Szeredi Signed-off-by: Greg Kroah-Hartman --- fs/fuse/inode.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/fuse/inode.c') diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 25fdf220d2e9..b6c0298a4f62 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -400,6 +400,8 @@ static void fuse_put_super(struct super_block *sb) fuse_send_destroy(fc); fuse_abort_conn(fc); + fuse_wait_aborted(fc); + mutex_lock(&fuse_mutex); list_del(&fc->entry); fuse_ctl_remove_conn(fc); -- cgit v1.2.1