+ mm-fix-unaccount-of-memory-on-vma_link-failure.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm: fix unaccount of memory on vma_link() failure
has been added to the -mm mm-unstable branch.  Its filename is
     mm-fix-unaccount-of-memory-on-vma_link-failure.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-fix-unaccount-of-memory-on-vma_link-failure.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: Anthony Yznaga <anthony.yznaga@oracle.com>
Subject: mm: fix unaccount of memory on vma_link() failure
Date: Tue, 29 Aug 2023 17:43:24 -0700

Fix insert_vm_struct() so that only accounted memory is unaccounted if
vma_link() fails.

Link: https://lkml.kernel.org/r/20230830004324.16101-1-anthony.yznaga@oracle.com
Fixes: d4af56c5c7c6 ("mm: start tracking VMAs with maple tree")
Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/mmap.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/mm/mmap.c~mm-fix-unaccount-of-memory-on-vma_link-failure
+++ a/mm/mmap.c
@@ -3278,7 +3278,8 @@ int insert_vm_struct(struct mm_struct *m
 	}
 
 	if (vma_link(mm, vma)) {
-		vm_unacct_memory(charged);
+		if (vma->vm_flags & VM_ACCOUNT)
+			vm_unacct_memory(charged);
 		return -ENOMEM;
 	}
 
_

Patches currently in -mm which might be from anthony.yznaga@oracle.com are

mm-mremap-fix-unaccount-of-memory-on-vma_merge-failure.patch
mm-fix-unaccount-of-memory-on-vma_link-failure.patch