nt eb745dbccce56f1bbe3f80b95ad2a325145171c2
author Christoph Hellwig <hch@lst.de> 1295006850 +0100
committer Al Viro <viro@zeniv.linux.org.uk> 1295249130 -0500

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>
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