From: Shi Weihua <shiwh@cn.fujitsu.com>
Date: Tue, 18 May 2010 00:51:54 +0000 (+0000)
Subject: Btrfs: prohibit a operation of changing acl's mask when noacl mount option used
X-Git-Tag: v2.6.35-rc3~3^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=731e3d1b4348a96d53de6c084774424dedc64a3b;p=pandora-kernel.git

Btrfs: prohibit a operation of changing acl's mask when noacl mount option used

when used Posix File System Test Suite(pjd-fstest) to test btrfs,
some cases about setfacl failed when noacl mount option used.
I simplified used commands in pjd-fstest, and the following steps
can reproduce it.
------------------------
# cd btrfs-part/
# mkdir aaa
# setfacl -m m::rw aaa    <- successed, but not expected by pjd-fstest.
------------------------
I checked ext3, a warning message occured, like as:
  setfacl: aaa/: Operation not supported
Certainly, it's expected by pjd-fstest.

So, i compared acl.c of btrfs and ext3. Based on that, a patch created.
Fortunately, it works.

Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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