From 86d912f41dca32eca8827f2f878139735e69dc28 Mon Sep 17 00:00:00 2001
From: Hugh Dickins <hugh@veritas.com>
Date: Sat, 29 Oct 2005 18:16:14 -0700
Subject: [PATCH] [PATCH] mm: zap_pte_range dec rss
Small adjustment: zap_pte_range decrement its rss counts from 0 then finally
add, avoiding negations - we don't have or need a sub_mm_rss.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
mm/memory.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index 7893eb4bb8c0..bc6296398f8b 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -609,13 +609,13 @@ static void zap_pte_range(struct mmu_gather *tlb,
set_pte_at(mm, addr, pte,
pgoff_to_pte(page->index));
if (PageAnon(page))
- anon_rss++;
+ anon_rss--;
else {
if (pte_dirty(ptent))
set_page_dirty(page);
if (pte_young(ptent))
mark_page_accessed(page);
- file_rss++;
+ file_rss--;
}
page_remove_rmap(page);
tlb_remove_page(tlb, page);
@@ -632,7 +632,7 @@ static void zap_pte_range(struct mmu_gather *tlb,
pte_clear_full(mm, addr, pte, tlb->fullmm);
} while (pte++, addr += PAGE_SIZE, addr != end);
- add_mm_rss(mm, -file_rss, -anon_rss);
+ add_mm_rss(mm, file_rss, anon_rss);
pte_unmap(pte - 1);
}