[PATCH] FUSE: nfsd directory fsync fix

[Miklos Szeredi <miklos@szeredi.hu>]

This patch fixes an Oops which happens when nfsd calls fsync on a
directory with a NULL file argument.  The solution is to just ignore
the fsync.  Thanks to David Shaw for the bugreport.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>

diff -rup linux-2.6.12-rc2-mm3/fs/fuse/dir.c linux-fuse/fs/fuse/dir.c
--- linux-2.6.12-rc2-mm3/fs/fuse/dir.c	2005-04-22 15:49:29.000000000 +0200
+++ linux-fuse/fs/fuse/dir.c	2005-04-22 15:50:32.000000000 +0200
@@ -590,7 +590,8 @@ static int fuse_dir_release(struct inode
 
 static int fuse_dir_fsync(struct file *file, struct dentry *de, int datasync)
 {
-	return fuse_fsync_common(file, de, datasync, 1);
+	/* nfsd can call this with no file */
+	return file ? fuse_fsync_common(file, de, datasync, 1) : 0;
 }
 
 static unsigned iattr_to_fattr(struct iattr *iattr, struct fuse_attr *fattr)
-
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