block: use FIELD_SIZEOF to calculate size of a field
authorManinder Singh <maninder1.s@samsung.com>
Tue, 7 Jul 2015 07:11:07 +0000 (12:41 +0530)
committerJens Axboe <axboe@fb.com>
Tue, 7 Jul 2015 13:47:37 +0000 (07:47 -0600)
use FIELD_SIZEOF instead of open coding

Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
block/blk-core.c

index 82819e68f58b10c59edaa32c65b5a783306c99ae..627ed0c593fb4c05dd46e1da9eb75ddf2e6c1269 100644 (file)
@@ -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",