From: Maninder Singh <maninder1.s@samsung.com>
Date: Tue, 7 Jul 2015 07:11:07 +0000 (+0530)
Subject: block: use FIELD_SIZEOF to calculate size of a field
X-Git-Tag: v4.2-rc3~23^2~8
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=0762b23d23c1f23beab91a3af0fa89749b75f03c;p=linux.git

block: use FIELD_SIZEOF to calculate size of a field

use FIELD_SIZEOF instead of open coding

Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/block/blk-core.c b/block/blk-core.c
index 82819e68f58b..627ed0c593fb 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -3370,7 +3370,7 @@ EXPORT_SYMBOL(blk_post_runtime_resume);
 int __init blk_dev_init(void)
 {
 	BUILD_BUG_ON(__REQ_NR_BITS > 8 *
-			sizeof(((struct request *)0)->cmd_flags));
+			FIELD_SIZEOF(struct request, cmd_flags));
 
 	/* used for unplugging and affects IO latency/throughput - HIGHPRI */
 	kblockd_workqueue = alloc_workqueue("kblockd",