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authorNathan Chancellor <natechancellor@gmail.com>2019-10-24 23:28:03 +0300
committerMike Snitzer <snitzer@redhat.com>2019-11-07 19:59:38 +0300
commit35ad035b8398c634d888324a299ec50a84cbc6cc (patch)
tree81112c3baed20ffe14bbac05a34da9b19b3f2477 /drivers/md/dm-raid.c
parente7fad909b68aa37470d9f2d2731b5bec355ee5d6 (diff)
downloadlinux-35ad035b8398c634d888324a299ec50a84cbc6cc.tar.xz
dm raid: Remove unnecessary negation of a shift in raid10_format_to_md_layout
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@gmail.com> Acked-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-raid.c')
-rw-r--r--drivers/md/dm-raid.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 13fa90546a0f..c412eaa975fc 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -620,7 +620,6 @@ 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;