The quilt patch titled
Subject: mm/vma: extract validate_mm() from vma_complete()
has been removed from the -mm tree. Its filename was
mm-vma-extract-validate_mm-from-vma_complete.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: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>
Subject: mm/vma: extract validate_mm() from vma_complete()
Date: Fri, 30 Aug 2024 00:00:47 -0400
vma_complete() will need to be called during an unsafe time to call
validate_mm(). Extract the call in all places now so that only one
location can be modified in the next change.
Link: https://lkml.kernel.org/r/20240830040101.822209-8-Liam.Howlett@xxxxxxxxxx
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Cc: Bert Karwatzki <spasswolf@xxxxxx>
Cc: Jeff Xu <jeffxu@xxxxxxxxxxxx>
Cc: Jiri Olsa <olsajiri@xxxxxxxxx>
Cc: Kees Cook <kees@xxxxxxxxxx>
Cc: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxx>
Cc: Paul Moore <paul@xxxxxxxxxxxxxx>
Cc: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 1 +
mm/vma.c | 5 ++++-
2 files changed, 5 insertions(+), 1 deletion(-)
--- a/mm/mmap.c~mm-vma-extract-validate_mm-from-vma_complete
+++ a/mm/mmap.c
@@ -1796,6 +1796,7 @@ static int do_brk_flags(struct vma_itera
vma_iter_store(vmi, vma);
vma_complete(&vp, vmi, mm);
+ validate_mm(mm);
khugepaged_enter_vma(vma, flags);
goto out;
}
--- a/mm/vma.c~mm-vma-extract-validate_mm-from-vma_complete
+++ a/mm/vma.c
@@ -269,6 +269,7 @@ static int __split_vma(struct vma_iterat
/* vma_complete stores the new vma */
vma_complete(&vp, vmi, vma->vm_mm);
+ validate_mm(vma->vm_mm);
/* Success. */
if (new_below)
@@ -548,6 +549,7 @@ int vma_expand(struct vma_iterator *vmi,
vma_iter_store(vmi, vma);
vma_complete(&vp, vmi, vma->vm_mm);
+ validate_mm(vma->vm_mm);
return 0;
nomem:
@@ -589,6 +591,7 @@ int vma_shrink(struct vma_iterator *vmi,
vma_iter_clear(vmi);
vma_set_range(vma, start, end, pgoff);
vma_complete(&vp, vmi, vma->vm_mm);
+ validate_mm(vma->vm_mm);
return 0;
}
@@ -668,7 +671,6 @@ again:
}
if (vp->insert && vp->file)
uprobe_mmap(vp->insert);
- validate_mm(mm);
}
/*
@@ -1197,6 +1199,7 @@ static struct vm_area_struct
}
vma_complete(&vp, vmi, mm);
+ validate_mm(mm);
khugepaged_enter_vma(res, vm_flags);
return res;
_
Patches currently in -mm which might be from Liam.Howlett@xxxxxxxxxx are
