The patch titled
Subject: mmap: remove inline of vm_unmapped_area
has been added to the -mm tree. Its filename is
mmap-remove-inline-of-vm_unmapped_area.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mmap-remove-inline-of-vm_unmapped_area.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mmap-remove-inline-of-vm_unmapped_area.patch
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The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Jaewon Kim <jaewon31.kim@xxxxxxxxxxx>
Subject: mmap: remove inline of vm_unmapped_area
Patch series "mm: mmap: add mmap trace point", v3.
Create mmap trace file and add trace point of vm_unmapped_area().
This patch (of 2):
In preparation for next patch remove inline of vm_unmapped_area and move
code to mmap.c. There is no logical change.
Also remove unmapped_area[_topdown] out of mm.h, there is no code
calling to them.
Link: http://lkml.kernel.org/r/20200320055823.27089-2-jaewon31.kim@xxxxxxxxxxx
Signed-off-by: Jaewon Kim <jaewon31.kim@xxxxxxxxxxx>
Reviewed-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Michel Lespinasse <walken@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 21 +--------------------
mm/mmap.c | 20 ++++++++++++++++++--
2 files changed, 19 insertions(+), 22 deletions(-)
--- a/include/linux/mm.h~mmap-remove-inline-of-vm_unmapped_area
+++ a/include/linux/mm.h
@@ -2535,26 +2535,7 @@ struct vm_unmapped_area_info {
unsigned long align_offset;
};
-extern unsigned long unmapped_area(struct vm_unmapped_area_info *info);
-extern unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info);
-
-/*
- * Search for an unmapped address range.
- *
- * We are looking for a range that:
- * - does not intersect with any VMA;
- * - is contained within the [low_limit, high_limit) interval;
- * - is at least the desired size.
- * - satisfies (begin_addr & align_mask) == (align_offset & align_mask)
- */
-static inline unsigned long
-vm_unmapped_area(struct vm_unmapped_area_info *info)
-{
- if (info->flags & VM_UNMAPPED_AREA_TOPDOWN)
- return unmapped_area_topdown(info);
- else
- return unmapped_area(info);
-}
+extern unsigned long vm_unmapped_area(struct vm_unmapped_area_info *info);
/* truncate.c */
extern void truncate_inode_pages(struct address_space *, loff_t);
--- a/mm/mmap.c~mmap-remove-inline-of-vm_unmapped_area
+++ a/mm/mmap.c
@@ -1864,7 +1864,7 @@ static inline unsigned long gap_end_offs
return (addr - info->align_offset) & info->align_mask;
}
-unsigned long unmapped_area(struct vm_unmapped_area_info *info)
+static unsigned long unmapped_area(struct vm_unmapped_area_info *info)
{
/*
* We implement the search by looking for an rbtree node that
@@ -1966,7 +1966,7 @@ found:
return gap_start;
}
-unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info)
+static unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info)
{
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
@@ -2065,6 +2065,22 @@ found_highest:
return gap_end;
}
+/*
+ * Search for an unmapped address range.
+ *
+ * We are looking for a range that:
+ * - does not intersect with any VMA;
+ * - is contained within the [low_limit, high_limit) interval;
+ * - is at least the desired size.
+ * - satisfies (begin_addr & align_mask) == (align_offset & align_mask)
+ */
+unsigned long vm_unmapped_area(struct vm_unmapped_area_info *info)
+{
+ if (info->flags & VM_UNMAPPED_AREA_TOPDOWN)
+ return unmapped_area_topdown(info);
+ else
+ return unmapped_area(info);
+}
#ifndef arch_get_mmap_end
#define arch_get_mmap_end(addr) (TASK_SIZE)
_
Patches currently in -mm which might be from jaewon31.kim@xxxxxxxxxxx are
mmap-remove-inline-of-vm_unmapped_area.patch
mm-mmap-add-trace-point-of-vm_unmapped_area.patch
