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authorRik van Riel <riel@redhat.com>2008-10-18 20:26:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 08:52:31 -0700
commitba470de43188cdbff795b5da43a1474523c6c2fb (patch)
tree0477460fa8c3e61edd9f1534cd2193656e586f8b /mm/mremap.c
parent8edb08caf68184fb170f4f69c7445929e199eaea (diff)
downloadlinaro-lsk-ba470de43188cdbff795b5da43a1474523c6c2fb.tar.gz
mmap: handle mlocked pages during map, remap, unmap
Originally by Nick Piggin <npiggin@suse.de> Remove mlocked pages from the LRU using "unevictable infrastructure" during mmap(), munmap(), mremap() and truncate(). Try to move back to normal LRU lists on munmap() when last mlocked mapping removed. Remove PageMlocked() status when page truncated from file. [akpm@linux-foundation.org: cleanup] [kamezawa.hiroyu@jp.fujitsu.com: fix double unlock_page()] [kosaki.motohiro@jp.fujitsu.com: split LRU: munlock rework] [lee.schermerhorn@hp.com: mlock: fix __mlock_vma_pages_range comment block] [akpm@linux-foundation.org: remove bogus kerneldoc token] Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: KAMEZAWA Hiroyuki <kamewzawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mremap.c')
-rw-r--r--mm/mremap.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index 1a7743923c8..58a2908f42f 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -24,6 +24,8 @@
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
+#include "internal.h"
+
static pmd_t *get_old_pmd(struct mm_struct *mm, unsigned long addr)
{
pgd_t *pgd;
@@ -238,8 +240,8 @@ static unsigned long move_vma(struct vm_area_struct *vma,
if (vm_flags & VM_LOCKED) {
mm->locked_vm += new_len >> PAGE_SHIFT;
if (new_len > old_len)
- make_pages_present(new_addr + old_len,
- new_addr + new_len);
+ mlock_vma_pages_range(new_vma, new_addr + old_len,
+ new_addr + new_len);
}
return new_addr;
@@ -379,7 +381,7 @@ unsigned long do_mremap(unsigned long addr,
vm_stat_account(mm, vma->vm_flags, vma->vm_file, pages);
if (vma->vm_flags & VM_LOCKED) {
mm->locked_vm += pages;
- make_pages_present(addr + old_len,
+ mlock_vma_pages_range(vma, addr + old_len,
addr + new_len);
}
ret = addr;