From: Eric W. Biederman <ebiederm@aristanetworks.com>
Date: Sat, 13 Feb 2010 03:22:24 +0000 (-0800)
Subject: sysfs: Pack sysfs_dirent more tightly.
X-Git-Tag: v2.6.34-rc1~1^2~12
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=19c38b632d4554329986021fd66bdea468cf452c;p=~shefty%2Frdma-dev.git

sysfs: Pack sysfs_dirent more tightly.

Placing the 16bit s_mode between a pointer and a long doesn't pack well
especailly on 64bit where we wast 48 bits.  So move s_mode and
declare it as a unsigned short.  This is the sysfs backing store
after all we don't need fields extra large just in case someday
we want userspace to be able to use a larger value.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 37e0e086233..5a3192a0844 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -66,8 +66,8 @@ struct sysfs_dirent {
 	};
 
 	unsigned int		s_flags;
+	unsigned short		s_mode;
 	ino_t			s_ino;
-	umode_t			s_mode;
 	struct sysfs_inode_attrs *s_iattr;
 };