tree 6995509f59166fff90ce240ce72e3858f61ac101
parent 4662db446190ddef8fbab024f72dee77dd04b8f2
author Miklos Szeredi <mszeredi@suse.cz> 1298641498 +0100
committer Miklos Szeredi <mszeredi@suse.cz> 1298641498 +0100

fuse: fix hang of single threaded fuseblk filesystem

Single threaded NTFS-3G could get stuck if a delayed RELEASE reply
triggered a DESTROY request via path_put().

Fix this by

 a) making RELEASE requests synchronous, whenever possible, on fuseblk
 filesystems

 b) if not possible (triggered by an asynchronous read/write) then do
 the path_put() in a separate thread with schedule_work().

Reported-by: Oliver Neukum <oneukum@suse.de>
Cc: stable@kernel.org
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>