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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2015-02-12 00:28:11 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-12 02:06:06 +0100 |
| commit | 1e25a271c8ac1c9faebf4eb3fa609189e4e7b1b6 (patch) | |
| tree | bed90c6a138544e00ec6220737ba7516e6705240 /mm/huge_memory.c | |
| parent | mm: /proc/pid/clear_refs: avoid split_huge_page() (diff) | |
| download | linux-1e25a271c8ac1c9faebf4eb3fa609189e4e7b1b6.tar.xz linux-1e25a271c8ac1c9faebf4eb3fa609189e4e7b1b6.zip | |
mincore: apply page table walker on do_mincore()
This patch makes do_mincore() use walk_page_vma(), which reduces many
lines of code by using common page table walk code.
[daeseok.youn@gmail.com: remove unneeded variable 'err']
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 0531ea7dd7cf..29bc6e471df4 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1412,26 +1412,6 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, return ret; } -int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, - unsigned long addr, unsigned long end, - unsigned char *vec) -{ - spinlock_t *ptl; - int ret = 0; - - if (__pmd_trans_huge_lock(pmd, vma, &ptl) == 1) { - /* - * All logical pages in the range are present - * if backed by a huge page. - */ - spin_unlock(ptl); - memset(vec, 1, (end - addr) >> PAGE_SHIFT); - ret = 1; - } - - return ret; -} - int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma, unsigned long old_addr, unsigned long new_addr, unsigned long old_end, |