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authorChristoph Lameter <clameter@sgi.com>2006-06-23 02:03:38 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:51 -0700
commit442c9137de8d769053e81d325709dca72f0b5e44 (patch)
tree200e5ace0310755d88dd1c7597cc0bb540264fe1 /mm/migrate.c
parent6c5240ae7f48c83fcaa8e24fa63e7eb09aba5651 (diff)
downloadop-kernel-dev-442c9137de8d769053e81d325709dca72f0b5e44.zip
op-kernel-dev-442c9137de8d769053e81d325709dca72f0b5e44.tar.gz
[PATCH] More page migration: do not inc/dec rss counters
If we install a migration entry then the rss not really decreases since the page is just moved somewhere else. We can save ourselves the work of decrementing and later incrementing which will just eventually cause cacheline bouncing. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/migrate.c')
-rw-r--r--mm/migrate.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 8f91463..96b9546 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -164,7 +164,6 @@ static void remove_migration_pte(struct vm_area_struct *vma, unsigned long addr,
if (!is_migration_entry(entry) || migration_entry_to_page(entry) != old)
goto out;
- inc_mm_counter(mm, anon_rss);
get_page(new);
pte = pte_mkold(mk_pte(new, vma->vm_page_prot));
if (is_write_migration_entry(entry))
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