diff options
| author | Andrew Morton <akpm@linux-foundation.org> | 2011-07-25 17:12:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-25 20:57:09 -0700 |
| commit | 6ac47520063b230641a64062b8a229201cd0a3a8 (patch) | |
| tree | e26a25226f980a50468f001bbd3243d74d0d9768 | |
| parent | 32f84528fbb5177275193a3311be8756f0cbd62c (diff) | |
mm/memory.c: remove ZAP_BLOCK_SIZE
ZAP_BLOCK_SIZE became unused in the preemptible-mmu_gather work ("mm:
Remove i_mmap_lock lockbreak"). So zap it.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memory.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/mm/memory.c b/mm/memory.c index 9b8a01d941c..a58bbebb307 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1290,13 +1290,6 @@ static unsigned long unmap_page_range(struct mmu_gather *tlb, return addr; } -#ifdef CONFIG_PREEMPT -# define ZAP_BLOCK_SIZE (8 * PAGE_SIZE) -#else -/* No preempt: go for improved straight-line efficiency */ -# define ZAP_BLOCK_SIZE (1024 * PAGE_SIZE) -#endif - /** * unmap_vmas - unmap a range of memory covered by a list of vma's * @tlb: address of the caller's struct mmu_gather @@ -1310,10 +1303,6 @@ static unsigned long unmap_page_range(struct mmu_gather *tlb, * * Unmap all pages in the vma list. * - * We aim to not hold locks for too long (for scheduling latency reasons). - * So zap pages in ZAP_BLOCK_SIZE bytecounts. This means we need to - * return the ending mmu_gather to the caller. - * * Only addresses between `start' and `end' will be unmapped. * * The VMA list must be sorted in ascending virtual address order. |