[RFC 02/26] SLUB: Move count_partial()
From: Christoph Lameter <hidden>
Date: 2007-09-01 01:41:09
Also in:
linux-fsdevel, lkml
Subsystem:
memory management, slab allocator, the rest · Maintainers:
Andrew Morton, Vlastimil Babka, Harry Yoo, Linus Torvalds
Move the counting function for objects in partial slabs so that it is placed before kmem_cache_shrink. We will need to use it to establish the fragmentation ratio of per node slab lists. Signed-off-by: Christoph Lameter <redacted> --- mm/slub.c | 26 +++++++++++++------------- 1 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 45c76fe..aad6f83 100644
--- a/mm/slub.c
+++ b/mm/slub.c@@ -2595,6 +2595,19 @@ void kfree(const void *x) } EXPORT_SYMBOL(kfree); +static unsigned long count_partial(struct kmem_cache_node *n) +{ + unsigned long flags; + unsigned long x = 0; + struct page *page; + + spin_lock_irqsave(&n->list_lock, flags); + list_for_each_entry(page, &n->partial, lru) + x += page->inuse; + spin_unlock_irqrestore(&n->list_lock, flags); + return x; +} + /* * kmem_cache_shrink removes empty slabs from the partial lists and sorts * the remaining slabs by the number of items in use. The slabs with the
@@ -3331,19 +3344,6 @@ static int list_locations(struct kmem_cache *s, char *buf, return n; } -static unsigned long count_partial(struct kmem_cache_node *n) -{ - unsigned long flags; - unsigned long x = 0; - struct page *page; - - spin_lock_irqsave(&n->list_lock, flags); - list_for_each_entry(page, &n->partial, lru) - x += page->inuse; - spin_unlock_irqrestore(&n->list_lock, flags); - return x; -} - enum slab_stat_type { SL_FULL, SL_PARTIAL,
--
1.5.2.4
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