From: Miaohe Lin <linmiaohe@huawei.com>
Date: Wed, 5 May 2021 01:34:30 +0000 (-0700)
Subject: mm/hugeltb: remove redundant VM_BUG_ON() in region_add()
X-Git-Tag: accepted/tizen/unified/20230118.172025~7280^2~109
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f84df0b7f1b603f6c99670bdf2f908f0b6a5ed59;p=platform%2Fkernel%2Flinux-rpi.git

mm/hugeltb: remove redundant VM_BUG_ON() in region_add()

Patch series "Cleanup and fixup for hugetlb", v2.

This series contains cleanups to remove redundant VM_BUG_ON() and simplify
the return code.  Also this handles the error case in
hugetlb_fix_reserve_counts() correctly.  More details can be found in the
respective changelogs.

This patch (of 5):

The same VM_BUG_ON() check is already done in the callee.  Remove this
extra one to simplify the code slightly.

Link: https://lkml.kernel.org/r/20210410072348.20437-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20210410072348.20437-2-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Feilong Lin <linfeilong@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index c8f0a38..ce9e18d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -553,7 +553,6 @@ retry:
 	resv->adds_in_progress -= in_regions_needed;
 
 	spin_unlock(&resv->lock);
-	VM_BUG_ON(add < 0);
 	return add;
 }