commit 64c23e86873ee410554d6d1c76b60da47025e96f
author Christoph Hellwig <hch@lst.de> Fri Jan 14 13:07:30 2011 +0100
committer Al Viro <viro@zeniv.linux.org.uk> Mon Jan 17 02:25:30 2011 -0500
tree b30c5ff8782ebfdec6956d7834f796731fd3a1d4
parent eb745dbccce56f1bbe3f80b95ad2a325145171c2

make the feature checks in ->fallocate future proof

Instead of various home grown checks that might need updates for new
flags just check for any bit outside the mask of the features supported
by the filesystem.  This makes the check future proof for any newly
added flag.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ocfs2/file.c

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 63e3fca..cf254ce 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1997,6 +1997,8 @@
 	int change_size = 1;
 	int cmd = OCFS2_IOC_RESVSP64;
 
+	if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+		return -EOPNOTSUPP;
 	if (!ocfs2_writes_unwritten_extents(osb))
 		return -EOPNOTSUPP;