Commit 86d912f4 authored by Hugh Dickins's avatar Hugh Dickins Committed by Linus Torvalds

[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: default avatarHugh Dickins <hugh@veritas.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 8c103762
......@@ -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);
}
......
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