Commit 39aa3cb3 authored by Stefan Bader's avatar Stefan Bader Committed by Linus Torvalds

mm: Move vma_stack_continue into mm.h

So it can be used by all that need to check for that.
Signed-off-by: default avatarStefan Bader <stefan.bader@canonical.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 26a94e81
...@@ -224,7 +224,8 @@ static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma) ...@@ -224,7 +224,8 @@ static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma)
/* We don't show the stack guard page in /proc/maps */ /* We don't show the stack guard page in /proc/maps */
start = vma->vm_start; start = vma->vm_start;
if (vma->vm_flags & VM_GROWSDOWN) if (vma->vm_flags & VM_GROWSDOWN)
start += PAGE_SIZE; if (!vma_stack_continue(vma->vm_prev, vma->vm_start))
start += PAGE_SIZE;
seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n", seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
start, start,
......
...@@ -864,6 +864,12 @@ int set_page_dirty(struct page *page); ...@@ -864,6 +864,12 @@ int set_page_dirty(struct page *page);
int set_page_dirty_lock(struct page *page); int set_page_dirty_lock(struct page *page);
int clear_page_dirty_for_io(struct page *page); int clear_page_dirty_for_io(struct page *page);
/* Is the vma a continuation of the stack vma above it? */
static inline int vma_stack_continue(struct vm_area_struct *vma, unsigned long addr)
{
return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN);
}
extern unsigned long move_page_tables(struct vm_area_struct *vma, extern unsigned long move_page_tables(struct vm_area_struct *vma,
unsigned long old_addr, struct vm_area_struct *new_vma, unsigned long old_addr, struct vm_area_struct *new_vma,
unsigned long new_addr, unsigned long len); unsigned long new_addr, unsigned long len);
......
...@@ -135,12 +135,6 @@ void munlock_vma_page(struct page *page) ...@@ -135,12 +135,6 @@ void munlock_vma_page(struct page *page)
} }
} }
/* Is the vma a continuation of the stack vma above it? */
static inline int vma_stack_continue(struct vm_area_struct *vma, unsigned long addr)
{
return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN);
}
static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long addr) static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long addr)
{ {
return (vma->vm_flags & VM_GROWSDOWN) && return (vma->vm_flags & VM_GROWSDOWN) &&
......
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