diff options
| author | Stefan Bader <stefan.bader@canonical.com> | 2010-08-31 15:52:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-28 21:44:18 -0700 |
| commit | 78b8fca43dc4f315aa0b59b788902a4b60bee93d (patch) | |
| tree | 397156fd58ce4153ad2b79eba5af20d1a07d286a | |
| parent | 8e983dfe01d58fc808736e8a6ecafa96762ee0e1 (diff) | |
mm: Move vma_stack_continue into mm.h
commit 39aa3cb3e8250db9188a6f1e3fb62ffa1a717678 upstream.
So it can be used by all that need to check for that.
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/proc/task_mmu.c | 3 | ||||
| -rw-r--r-- | include/linux/mm.h | 6 | ||||
| -rw-r--r-- | mm/mlock.c | 6 |
3 files changed, 8 insertions, 7 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 899145d48207..e10ef0452847 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -220,7 +220,8 @@ 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 */ start = vma->vm_start; 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", start, diff --git a/include/linux/mm.h b/include/linux/mm.h index a8d25e43f9cf..11e5be6e72ce 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -841,6 +841,12 @@ int set_page_dirty(struct page *page); int set_page_dirty_lock(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, unsigned long old_addr, struct vm_area_struct *new_vma, unsigned long new_addr, unsigned long len); diff --git a/mm/mlock.c b/mm/mlock.c index 380ea896c17b..2d846cfe3990 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -138,12 +138,6 @@ 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) { return (vma->vm_flags & VM_GROWSDOWN) && |