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block: use FIELD_SIZEOF to calculate size of a field

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use FIELD_SIZEOF instead of open coding

Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Maninder Singh 2015-07-07 12:41:07 +05:30 committed by Jens Axboe
parent bb8bd38b9a
commit 0762b23d23
1 changed files with 1 additions and 1 deletions
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block/blk-core.c
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@ -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",