From 3b7cd457d0c8458f6a4df2854f75fd80c0338f93 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 15 Jun 2011 00:59:04 +0100 Subject: [PATCH 1/1] DRBD: Fix comparison always false warning due to long/long long compare Fix warnings of the following nature in the drbd header: In file included from drivers/block/drbd/drbd_bitmap.c:32: drivers/block/drbd/drbd_int.h: In function 'drbd_get_syncer_progress': drivers/block/drbd/drbd_int.h:2234: warning: comparison is always false due to limited range of data where mdev->rs_total (an unsigned long) is being compared to 1ULL << 32, which is always false on a 32-bit machine. Signed-off-by: David Howells Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_int.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index ece2e4a991fb..de42c7cf7caf 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -2071,7 +2071,7 @@ static inline void drbd_get_syncer_progress(struct drbd_conf *mdev, * Note: currently we don't support such large bitmaps on 32bit * arch anyways, but no harm done to be prepared for it here. */ - unsigned int shift = mdev->rs_total >= (1ULL << 32) ? 16 : 10; + unsigned int shift = mdev->rs_total > UINT_MAX ? 16 : 10; unsigned long left = *bits_left >> shift; unsigned long total = 1UL + (mdev->rs_total >> shift); unsigned long tmp = 1000UL - left * 1000UL/total; -- 2.34.1