The quilt patch titled
Subject: mm/mremap: write-lock VMA while remapping it to a new address range
has been removed from the -mm tree. Its filename was
mm-mremap-write-lock-vma-while-remapping-it-to-a-new-address-range.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Subject: mm/mremap: write-lock VMA while remapping it to a new address range
Date: Mon, 27 Feb 2023 09:36:16 -0800
Write-lock VMA as locked before copying it and when copy_vma produces a
new VMA.
Link: https://lkml.kernel.org/r/20230227173632.3292573-18-surenb@xxxxxxxxxx
Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Reviewed-by: Laurent Dufour <laurent.dufour@xxxxxxxxxx>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 1 +
mm/mremap.c | 1 +
2 files changed, 2 insertions(+)
--- a/mm/mmap.c~mm-mremap-write-lock-vma-while-remapping-it-to-a-new-address-range
+++ a/mm/mmap.c
@@ -3197,6 +3197,7 @@ struct vm_area_struct *copy_vma(struct v
get_file(new_vma->vm_file);
if (new_vma->vm_ops && new_vma->vm_ops->open)
new_vma->vm_ops->open(new_vma);
+ vma_start_write(new_vma);
if (vma_link(mm, new_vma))
goto out_vma_link;
*need_rmap_locks = false;
--- a/mm/mremap.c~mm-mremap-write-lock-vma-while-remapping-it-to-a-new-address-range
+++ a/mm/mremap.c
@@ -623,6 +623,7 @@ static unsigned long move_vma(struct vm_
return -ENOMEM;
}
+ vma_start_write(vma);
new_pgoff = vma->vm_pgoff + ((old_addr - vma->vm_start) >> PAGE_SHIFT);
new_vma = copy_vma(&vma, new_addr, new_len, new_pgoff,
&need_rmap_locks);
_
Patches currently in -mm which might be from surenb@xxxxxxxxxx are
