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authorHugh Dickins <hugh.dickins@tiscali.co.uk>2009-09-21 17:02:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-22 07:17:33 -0700
commita913e182ab9484308e870af37a14d372742d53b0 (patch)
tree0fca5598aeba4c53999ec46b6b82b46f9a981965 /include/linux/ksm.h
parent8314c4f24a0a5c9b1f7544e9fa83a1d5367ddaa7 (diff)
downloadlinux-linaro-stable-a913e182ab9484308e870af37a14d372742d53b0.tar.gz
ksm: clean up obsolete references
A few cleanups, given the munlock fix: the comment on ksm_test_exit() no longer applies, and it can be made private to ksm.c; there's no more reference to mmu_gather or tlb.h, and mmap.c doesn't need ksm.h. Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Acked-by: Izik Eidus <ieidus@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/ksm.h')
-rw-r--r--include/linux/ksm.h20
1 files changed, 0 insertions, 20 deletions
diff --git a/include/linux/ksm.h b/include/linux/ksm.h
index 0e26de6adb51..a485c14ecd5d 100644
--- a/include/linux/ksm.h
+++ b/include/linux/ksm.h
@@ -12,8 +12,6 @@
#include <linux/sched.h>
#include <linux/vmstat.h>
-struct mmu_gather;
-
#ifdef CONFIG_KSM
int ksm_madvise(struct vm_area_struct *vma, unsigned long start,
unsigned long end, int advice, unsigned long *vm_flags);
@@ -27,19 +25,6 @@ static inline int ksm_fork(struct mm_struct *mm, struct mm_struct *oldmm)
return 0;
}
-/*
- * For KSM to handle OOM without deadlock when it's breaking COW in a
- * likely victim of the OOM killer, exit_mmap() has to serialize with
- * ksm_exit() after freeing mm's pages but before freeing its page tables.
- * That leaves a window in which KSM might refault pages which have just
- * been finally unmapped: guard against that with ksm_test_exit(), and
- * use it after getting mmap_sem in ksm.c, to check if mm is exiting.
- */
-static inline bool ksm_test_exit(struct mm_struct *mm)
-{
- return atomic_read(&mm->mm_users) == 0;
-}
-
static inline void ksm_exit(struct mm_struct *mm)
{
if (test_bit(MMF_VM_MERGEABLE, &mm->flags))
@@ -79,11 +64,6 @@ static inline int ksm_fork(struct mm_struct *mm, struct mm_struct *oldmm)
return 0;
}
-static inline bool ksm_test_exit(struct mm_struct *mm)
-{
- return 0;
-}
-
static inline void ksm_exit(struct mm_struct *mm)
{
}