diff options
Diffstat (limited to 'include/linux/ksm.h')
| -rw-r--r-- | include/linux/ksm.h | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/include/linux/ksm.h b/include/linux/ksm.h index 0e26de6adb5..a485c14ecd5 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) { } |