Messages in this thread Patch in this message | | | From | Naoya Horiguchi <> | Subject | [PATCH 02/11] pagewalk: add walk_page_vma() | Date | Wed, 11 Dec 2013 17:08:58 -0500 |
| |
Introduces walk_page_vma(), which is useful for the callers which want to walk over a given vma. It's used by later patches.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> --- include/linux/mm.h | 1 + mm/pagewalk.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+)
diff --git v3.13-rc3-mmots-2013-12-10-16-38.orig/include/linux/mm.h v3.13-rc3-mmots-2013-12-10-16-38/include/linux/mm.h index 1cb9944c4feb..8d1a3659419d 100644 --- v3.13-rc3-mmots-2013-12-10-16-38.orig/include/linux/mm.h +++ v3.13-rc3-mmots-2013-12-10-16-38/include/linux/mm.h @@ -1101,6 +1101,7 @@ struct mm_walk { int walk_page_range(unsigned long addr, unsigned long end, struct mm_walk *walk); +int walk_page_vma(struct vm_area_struct *vma, struct mm_walk *walk); void free_pgd_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end, unsigned long floor, unsigned long ceiling); int copy_page_range(struct mm_struct *dst, struct mm_struct *src, diff --git v3.13-rc3-mmots-2013-12-10-16-38.orig/mm/pagewalk.c v3.13-rc3-mmots-2013-12-10-16-38/mm/pagewalk.c index b0cada41b80c..f4ba2c212330 100644 --- v3.13-rc3-mmots-2013-12-10-16-38.orig/mm/pagewalk.c +++ v3.13-rc3-mmots-2013-12-10-16-38/mm/pagewalk.c @@ -326,3 +326,21 @@ int walk_page_range(unsigned long start, unsigned long end, } while (start = next, start < end); return err; } + +int walk_page_vma(struct vm_area_struct *vma, struct mm_walk *walk) +{ + int err; + + if (!walk->mm) + return -EINVAL; + + VM_BUG_ON(!rwsem_is_locked(&walk->mm->mmap_sem)); + VM_BUG_ON(!vma); + walk->vma = vma; + err = walk_page_test(vma->vm_start, vma->vm_end, walk); + if (skip_check(walk)) + return 0; + if (err) + return err; + return __walk_page_range(vma->vm_start, vma->vm_end, walk); +} -- 1.8.3.1
| |