The quilt patch titled
Subject: mm: add temporary vma iterator versions of vma_merge(), split_vma(), and __split_vma()
has been removed from the -mm tree. Its filename was
mm-add-temporary-vma-iterator-versions-of-vma_merge-split_vma-and-__split_vma.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: add temporary vma iterator versions of vma_merge(), split_vma(), and __split_vma()
Date: Fri, 20 Jan 2023 11:26:15 -0500
These wrappers are short-lived in this patch set so that each user can be
converted on its own. In the end, these functions are renamed in one
commit.
Link: https://lkml.kernel.org/r/20230120162650.984577-15-Liam.Howlett@xxxxxxxxxx
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 11 +++++++++-
mm/mmap.c | 44 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+), 1 deletion(-)
--- a/include/linux/mm.h~mm-add-temporary-vma-iterator-versions-of-vma_merge-split_vma-and-__split_vma
+++ a/include/linux/mm.h
@@ -2843,11 +2843,20 @@ extern struct vm_area_struct *vma_merge(
struct vm_area_struct *prev, unsigned long addr, unsigned long end,
unsigned long vm_flags, struct anon_vma *, struct file *, pgoff_t,
struct mempolicy *, struct vm_userfaultfd_ctx, struct anon_vma_name *);
+extern struct vm_area_struct *vmi_vma_merge(struct vma_iterator *vmi,
+ struct mm_struct *, struct vm_area_struct *prev, unsigned long addr,
+ unsigned long end, unsigned long vm_flags, struct anon_vma *,
+ struct file *, pgoff_t, struct mempolicy *, struct vm_userfaultfd_ctx,
+ struct anon_vma_name *);
extern struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *);
extern int __split_vma(struct mm_struct *, struct vm_area_struct *,
- unsigned long addr, int new_below);
+ unsigned long addr, int new_below);
+extern int vmi__split_vma(struct vma_iterator *vmi, struct mm_struct *,
+ struct vm_area_struct *, unsigned long addr, int new_below);
extern int split_vma(struct mm_struct *, struct vm_area_struct *,
unsigned long addr, int new_below);
+extern int vmi_split_vma(struct vma_iterator *vmi, struct mm_struct *,
+ struct vm_area_struct *, unsigned long addr, int new_below);
extern int insert_vm_struct(struct mm_struct *, struct vm_area_struct *);
extern void unlink_file_vma(struct vm_area_struct *);
extern struct vm_area_struct *copy_vma(struct vm_area_struct **,
--- a/mm/mmap.c~mm-add-temporary-vma-iterator-versions-of-vma_merge-split_vma-and-__split_vma
+++ a/mm/mmap.c
@@ -1091,6 +1091,25 @@ struct vm_area_struct *vma_merge(struct
return res;
}
+struct vm_area_struct *vmi_vma_merge(struct vma_iterator *vmi,
+ struct mm_struct *mm,
+ struct vm_area_struct *prev, unsigned long addr,
+ unsigned long end, unsigned long vm_flags,
+ struct anon_vma *anon_vma, struct file *file,
+ pgoff_t pgoff, struct mempolicy *policy,
+ struct vm_userfaultfd_ctx vm_userfaultfd_ctx,
+ struct anon_vma_name *anon_name)
+{
+ struct vm_area_struct *tmp;
+
+ tmp = vma_merge(mm, prev, addr, end, vm_flags, anon_vma, file, pgoff,
+ policy, vm_userfaultfd_ctx, anon_name);
+ if (tmp)
+ vma_iter_set(vmi, end);
+
+ return tmp;
+}
+
/*
* Rough compatibility check to quickly see if it's even worth looking
* at sharing an anon_vma.
@@ -2276,6 +2295,18 @@ int __split_vma(struct mm_struct *mm, st
validate_mm_mt(mm);
return err;
}
+int vmi__split_vma(struct vma_iterator *vmi, struct mm_struct *mm,
+ struct vm_area_struct *vma, unsigned long addr, int new_below)
+{
+ int ret;
+ unsigned long end = vma->vm_end;
+
+ ret = __split_vma(mm, vma, addr, new_below);
+ if (!ret)
+ vma_iter_set(vmi, end);
+
+ return ret;
+}
/*
* Split a vma into two pieces at address 'addr', a new vma is allocated
@@ -2290,6 +2321,19 @@ int split_vma(struct mm_struct *mm, stru
return __split_vma(mm, vma, addr, new_below);
}
+int vmi_split_vma(struct vma_iterator *vmi, struct mm_struct *mm,
+ struct vm_area_struct *vma, unsigned long addr, int new_below)
+{
+ int ret;
+ unsigned long end = vma->vm_end;
+
+ ret = split_vma(mm, vma, addr, new_below);
+ if (!ret)
+ vma_iter_set(vmi, end);
+
+ return ret;
+}
+
static inline int munmap_sidetree(struct vm_area_struct *vma,
struct ma_state *mas_detach)
{
_
Patches currently in -mm which might be from Liam.Howlett@xxxxxxxxxx are
