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mm: remove unused VM_<READfoo> macros and expand other in-place

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These VM_<READfoo> macros aren't used very often and three of them
aren't used at all.

Expand the ones that are used in-place, and remove all the now unused
#define VM_<foo> macros.

VM_READHINTMASK, VM_NormalReadHint and VM_ClearReadHint were added just
before 2.4 and appears have never been used.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2013-07-08 16:00:18 -07:00 • committed by Linus Torvalds
parent 73b44ff43c
commit 64363aad5f
4 changed files with 5 additions and 11 deletions
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2
mm/rmap.c
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@ -720,7 +720,7 @@ int page_referenced_one(struct page *page, struct vm_area_struct *vma,
* mapping is already gone, the unmap path will have
* set PG_referenced or activated the page.
*/
if (likely(!VM_SequentialReadHint(vma)))
if (likely(!(vma->vm_flags & VM_SEQ_READ)))
referenced++;
}
pte_unmap_unlock(pte, ptl);