From 6ac47520063b230641a64062b8a229201cd0a3a8 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Mon, 25 Jul 2011 17:12:16 -0700 Subject: [PATCH] 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index 9b8a01d..a58bbeb 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. -- 2.7.4