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[PATCH] mm: zap_pte_range dec rss

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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>
This commit is contained in:
Hugh Dickins 2005-10-29 18:16:14 -07:00 committed by Linus Torvalds
parent 8c10376271
commit 86d912f41d
1 changed files with 3 additions and 3 deletions
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6
mm/memory.c
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@ -609,13 +609,13 @@ static void zap_pte_range(struct mmu_gather *tlb,
set_pte_at(mm, addr, pte, set_pte_at(mm, addr, pte,
pgoff_to_pte(page->index)); pgoff_to_pte(page->index));
if (PageAnon(page)) if (PageAnon(page))
anon_rss++; anon_rss--;
else { else {
if (pte_dirty(ptent)) if (pte_dirty(ptent))
set_page_dirty(page); set_page_dirty(page);
if (pte_young(ptent)) if (pte_young(ptent))
mark_page_accessed(page); mark_page_accessed(page);
file_rss++; file_rss--;
} }
page_remove_rmap(page); page_remove_rmap(page);
tlb_remove_page(tlb, 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); pte_clear_full(mm, addr, pte, tlb->fullmm);
} while (pte++, addr += PAGE_SIZE, addr != end); } 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); pte_unmap(pte - 1);
} }