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>

diff --git a/include/linux/mm.h b/include/linux/mm.h
index e8e1afa..937bf71 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -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);

diff --git a/mm/mmap.c b/mm/mmap.c
index d681a20..ba990c2 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -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)