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| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2015-04-14 15:44:37 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-14 16:48:59 -0700 |
| commit | 84d33df279e0380995b0e03fb8aad04cef2bc29f (patch) | |
| tree | 05472b7380d74e7ff9d386a52cee4d6c8b87fea8 /mm/gup.c | |
| parent | slob: make slob_alloc_node() static and remove EXPORT_SYMBOL() (diff) | |
| download | linux-dev-84d33df279e0380995b0e03fb8aad04cef2bc29f.tar.xz linux-dev-84d33df279e0380995b0e03fb8aad04cef2bc29f.zip | |
mm: rename FOLL_MLOCK to FOLL_POPULATE
After commit a1fde08c74e9 ("VM: skip the stack guard page lookup in
get_user_pages only for mlock") FOLL_MLOCK has lost its original
meaning: we don't necessarily mlock the page if the flags is set -- we
also take VM_LOCKED into consideration.
Since we use the same codepath for __mm_populate(), let's rename
FOLL_MLOCK to FOLL_POPULATE.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/gup.c')
| -rw-r--r-- | mm/gup.c | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -92,7 +92,7 @@ retry: */ mark_page_accessed(page); } - if ((flags & FOLL_MLOCK) && (vma->vm_flags & VM_LOCKED)) { + if ((flags & FOLL_POPULATE) && (vma->vm_flags & VM_LOCKED)) { /* * The preliminary mapping check is mainly to avoid the * pointless overhead of lock_page on the ZERO_PAGE @@ -265,8 +265,8 @@ static int faultin_page(struct task_struct *tsk, struct vm_area_struct *vma, unsigned int fault_flags = 0; int ret; - /* For mlock, just skip the stack guard page. */ - if ((*flags & FOLL_MLOCK) && + /* For mm_populate(), just skip the stack guard page. */ + if ((*flags & FOLL_POPULATE) && (stack_guard_page_start(vma, address) || stack_guard_page_end(vma, address + PAGE_SIZE))) return -ENOENT; |