[PATCH] fuse: add request interruption

Add synchronous request interruption.  This is needed for file locking
operations which have to be interruptible.  However filesystem may implement
interruptibility of other operations (e.g.  like NFS 'intr' mount option).

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index ce759414cff9..36f92f181d2f 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -705,6 +705,9 @@ static int fuse_setlk(struct file *file, struct file_lock *fl)
         fuse_lk_fill(req, file, fl, opcode, pid);
         request_send(fc, req);
         err = req->out.h.error;
+        /* locking is restartable */
+        if (err == -EINTR)
+                err = -ERESTARTSYS;
         fuse_put_request(fc, req);
         return err;
 }