The patch titled
Subject: mmap: remove unroll from __vma_adjust()
has been added to the -mm mm-unstable branch. Its filename is
mm-start-tracking-vmas-with-maple-tree-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-start-tracking-vmas-with-maple-tree-fix.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: Liam Howlett <liam.howlett@xxxxxxxxxx>
Subject: mmap: remove unroll from __vma_adjust()
Date: Tue, 19 Jul 2022 18:49:48 +0000
If __vma_adjust() fails, then there is no reason to undo the anon vma work
since it will be done in the caller or we have been OOMed.
Link: https://lkml.kernel.org/r/20220719184938.3359932-1-Liam.Howlett@xxxxxxxxxx
Fixes: 83651ef5048d (mm: start tracking VMAs with maple tree)
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Suggested-by: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
--- a/mm/mmap.c~mm-start-tracking-vmas-with-maple-tree-fix
+++ a/mm/mmap.c
@@ -923,12 +923,8 @@ int __vma_adjust(struct vm_area_struct *
}
}
vma_adjust_trans_huge(orig_vma, start, end, adjust_next);
-
- if (mas_preallocate(&mas, vma, GFP_KERNEL)) {
- if (exporter && exporter->anon_vma)
- unlink_anon_vmas(importer);
+ if (mas_preallocate(&mas, vma, GFP_KERNEL))
return -ENOMEM;
- }
if (file) {
mapping = file->f_mapping;
_
Patches currently in -mm which might be from liam.howlett@xxxxxxxxxx are
android-binder-fix-lockdep-check-on-clearing-vma.patch
maple-tree-add-new-data-structure-fix.patch
mm-start-tracking-vmas-with-maple-tree-fix.patch
mm-mmap-use-advanced-maple-tree-api-for-mmap_region-fix.patch
mm-mlock-drop-dead-code-in-count_mm_mlocked_page_nr.patch
