tree 1f0a95894fa9a8e226ee2d74c64805c373b1b927
parent 2f26afba46f0ebf155cf9be746496a0304a5b7cf
author Shi Weihua <shiwh@cn.fujitsu.com> 1274143914 +0000
committer Chris Mason <chris.mason@oracle.com> 1276286258 -0400

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>