mdadm/0013-super-intel-Fix-issue-with-abs-being-irrelevant.patch

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From 5d494b2e4a4fc1208e56a78cfdc8bfb20c6ffa83 Mon Sep 17 00:00:00 2001
From: Jes Sorensen <jsorensen@fb.com>
Date: Tue, 9 Jul 2019 13:26:08 -0400
Subject: [PATCH 13/27] super-intel: Fix issue with abs() being irrelevant
gcc9 complains about subtracting unsigned from unsigned and code
assuming the result can be negative.
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
---
super-intel.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/super-intel.c b/super-intel.c
index 5c3f9cb..988883e 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -2805,7 +2805,7 @@ static unsigned long long calc_component_size(struct imsm_map *map,
{
unsigned long long component_size;
unsigned long long dev_size = imsm_dev_size(dev);
- unsigned long long calc_dev_size = 0;
+ long long calc_dev_size = 0;
unsigned int member_disks = imsm_num_data_members(map);
if (member_disks == 0)
@@ -2819,7 +2819,7 @@ static unsigned long long calc_component_size(struct imsm_map *map,
* 2048 blocks per each device. If the difference is higher it means
* that array size was expanded and num_data_stripes was not updated.
*/
- if ((unsigned int)abs(calc_dev_size - dev_size) >
+ if (llabs(calc_dev_size - (long long)dev_size) >
(1 << SECT_PER_MB_SHIFT) * member_disks) {
component_size = dev_size / member_disks;
dprintf("Invalid num_data_stripes in metadata; expected=%llu, found=%llu\n",
--
2.21.1 (Apple Git-122.3)