When building with Clang + -Wtautological-constant-compare:
drivers/md/dm-raid.c:619:8: warning: converting the result of '<<' to a
boolean always evaluates to true [-Wtautological-constant-compare]
r = !RAID10_OFFSET;
^
drivers/md/dm-raid.c:517:28: note: expanded from macro 'RAID10_OFFSET'
#define RAID10_OFFSET (1 << 16) /* stripes with data
copies area adjacent on devices */
^
1 warning generated.
Negating a non-zero number will always make it zero, which is the
default value of r in this function so this statement is unnecessary;
remove it so that clang no longer warns.
Link: https://github.com/ClangBuiltLinux/linux/issues/753
Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
---
drivers/md/dm-raid.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index b0aa595e4375..13fabc6779e5 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -616,7 +616,6 @@ static int raid10_format_to_md_layout(struct raid_set *rs,
} else if (algorithm == ALGORITHM_RAID10_FAR) {
f = copies;
- r = !RAID10_OFFSET;
if (!test_bit(__CTR_FLAG_RAID10_USE_NEAR_SETS, &rs->ctr_flags))
r |= RAID10_USE_FAR_SETS;
--
2.24.0.rc1
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