From: John Stultz <john.stultz@linaro.org>
Date: Mon, 19 Oct 2015 04:01:05 +0000 (-0400)
Subject: ext4: fix abs() usage in ext4_mb_check_group_pa
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=16175039e6c6527453a23b4949c2a68e82750895;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ext4: fix abs() usage in ext4_mb_check_group_pa

The ext4_fsblk_t type is a long long, which should not be used
with abs(), as is done in ext4_mb_check_group_pa().

This patch modifies ext4_mb_check_group_pa() to use abs64()
instead.

Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 61eaf74dca37..b4b3c1f91814 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3333,8 +3333,8 @@ ext4_mb_check_group_pa(ext4_fsblk_t goal_block,
 		atomic_inc(&pa->pa_count);
 		return pa;
 	}
-	cur_distance = abs(goal_block - cpa->pa_pstart);
-	new_distance = abs(goal_block - pa->pa_pstart);
+	cur_distance = abs64(goal_block - cpa->pa_pstart);
+	new_distance = abs64(goal_block - pa->pa_pstart);
 
 	if (cur_distance <= new_distance)
 		return cpa;