The patch titled
Subject: hugetlb: initialize variable to avoid compiler warning
has been added to the -mm mm-unstable branch. Its filename is
hugetlb-initialize-variable-to-avoid-compiler-warning.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/hugetlb-initialize-variable-to-avoid-compiler-warning.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Subject: hugetlb: initialize variable to avoid compiler warning
Date: Fri, 16 Dec 2022 14:45:07 -0800
With the gcc 'maybe-uninitialized' warning enabled, gcc will produce:
mm/hugetlb.c:6896:20: warning: `chg' may be used uninitialized
This is a false positive, but may be difficult for the compiler to
determine. maybe-uninitialized is disabled by default, but this gets
flagged as a 0-DAY build regression.
Initialize the variable to silence the warning.
Link: https://lkml.kernel.org/r/20221216224507.106789-1-mike.kravetz@xxxxxxxxxx
Signed-off-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/hugetlb.c~hugetlb-initialize-variable-to-avoid-compiler-warning
+++ a/mm/hugetlb.c
@@ -6736,7 +6736,7 @@ bool hugetlb_reserve_pages(struct inode
struct vm_area_struct *vma,
vm_flags_t vm_flags)
{
- long chg, add = -1;
+ long chg = -1, add = -1;
struct hstate *h = hstate_inode(inode);
struct hugepage_subpool *spool = subpool_inode(inode);
struct resv_map *resv_map;
_
Patches currently in -mm which might be from mike.kravetz@xxxxxxxxxx are
hugetlb-really-allocate-vma-lock-for-all-sharable-vmas.patch
hugetlb-update-vma-flag-check-for-hugetlb-vma-lock.patch
hugetlb-initialize-variable-to-avoid-compiler-warning.patch
