linux-kernel - [PATCH 27/47] staging/lustre: shrink lu_object_header by 8 bytes on x86

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Date:	Sun, 27 Apr 2014 13:06:51 -0400
From:	Oleg Drokin <green@...uxhacker.ru>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Cc:	Andreas Dilger <andreas.dilger@...el.com>,
	Oleg Drokin <oleg.drokin@...el.com>
Subject: [PATCH 27/47] staging/lustre: shrink lu_object_header by 8 bytes on x86_64

From: Andreas Dilger <andreas.dilger@...el.com>

Locate the loh_flags and loh_ref fields together in lu_object_header
to avoid holes and shrink the structure by 8 bytes.

Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
Reviewed-on: http://review.whamcloud.com/9185
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3059
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@...el.com>
Reviewed-by: Liang Zhen <liang.zhen@...el.com>
Signed-off-by: Oleg Drokin <oleg.drokin@...el.com>
---
 drivers/staging/lustre/lustre/include/lu_object.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/lu_object.h b/drivers/staging/lustre/lustre/include/lu_object.h
index 6773bca..98149f5 100644
--- a/drivers/staging/lustre/lustre/include/lu_object.h
+++ b/drivers/staging/lustre/lustre/include/lu_object.h
@@ -516,6 +516,10 @@ enum lu_object_header_attr {
  */
 struct lu_object_header {
 	/**
+	 * Fid, uniquely identifying this object.
+	 */
+	struct lu_fid		loh_fid;
+	/**
 	 * Object flags from enum lu_object_header_flags. Set and checked
 	 * atomically.
 	 */
@@ -525,10 +529,6 @@ struct lu_object_header {
 	 */
 	atomic_t	   loh_ref;
 	/**
-	 * Fid, uniquely identifying this object.
-	 */
-	struct lu_fid	  loh_fid;
-	/**
 	 * Common object attributes, cached for efficiency. From enum
 	 * lu_object_header_attr.
 	 */
-- 
1.8.5.3

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