diff options
| author | Shaohua Li | 2012-01-12 17:19:16 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2012-01-12 20:13:08 -0800 |
| commit | f21760b15dcd091e5afd38d0b97197b45f7ef2ea (patch) | |
| tree | 84dd0f9016b46630d6b67e48ff0382b78a1bc519 /include/linux/huge_mm.h | |
| parent | e5591307f0c1eb733d280a0b72473e01d7f88530 (diff) | |
thp: add tlb_remove_pmd_tlb_entry
We have tlb_remove_tlb_entry to indicate a pte tlb flush entry should be
flushed, but not a corresponding API for pmd entry. This isn't a
problem so far because THP is only for x86 currently and tlb_flush()
under x86 will flush entire TLB. But this is confusion and could be
missed if thp is ported to other arch.
Also convert tlb->need_flush = 1 to a VM_BUG_ON(!tlb->need_flush) in
__tlb_remove_page() as suggested by Andrea Arcangeli. The
__tlb_remove_page() function is supposed to be called after
tlb_remove_xxx_tlb_entry() and we can catch any misuse.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/huge_mm.h')
| -rw-r--r-- | include/linux/huge_mm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index a9ace9c32507..1b921299abc4 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -18,7 +18,7 @@ extern struct page *follow_trans_huge_pmd(struct mm_struct *mm, unsigned int flags); extern int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, - pmd_t *pmd); + pmd_t *pmd, unsigned long addr); extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, unsigned long end, unsigned char *vec); |