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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.

Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michel Lespinasse <walken@google.com>
Cc: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/20200320055823.27089-2-jaewon31.kim@samsung.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jaewon Kim 2020-04-01 21:09:10 -07:00 committed by Linus Torvalds
parent abd69b9e00
commit baceaf1c8b
2 changed files with 19 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
include/linux/mm.h
View File

@ -2530,26 +2530,7 @@ 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);

20
mm/mmap.c
View File

@ -1848,7 +1848,7 @@ unacct_error:
return error;
}
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
@ -1951,7 +1951,7 @@ 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;
@ -2050,6 +2050,22 @@ 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)