From: Hugh Dickins <hughd@google.com>
Date: Wed, 23 Jul 2014 21:00:17 +0000 (-0700)
Subject: simple_xattr: permit 0-size extended attributes
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~243^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e66d445d0421a159135572a0ba44b75c7c4adfa;p=pandora-kernel.git

simple_xattr: permit 0-size extended attributes

If a filesystem uses simple_xattr to support user extended attributes,
LTP setxattr01 and xfstests generic/062 fail with "Cannot allocate
memory": simple_xattr_alloc()'s wrap-around test mistakenly excludes
values of zero size.  Fix that off-by-one (but apparently no filesystem
needs them yet).

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Jeff Layton <jlayton@poochiereds.net>
Cc: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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