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slub: Separate out kmem_cache_cpu processing from deactivate_slab

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Processing on fields of kmem_cache_cpu is cleaner if code working on fields
of this struct is taken out of deactivate_slab().

Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Christoph Lameter 2012-05-09 10:09:57 -05:00 committed by Pekka Enberg
parent ec3ab083a7
commit c17dda40a6
1 changed files with 12 additions and 12 deletions
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24
mm/slub.c
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@ -1729,14 +1729,12 @@ void init_kmem_cache_cpus(struct kmem_cache *s)
/*
* Remove the cpu slab
*/
static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c)
static void deactivate_slab(struct kmem_cache *s, struct page *page, void *freelist)
{
enum slab_modes { M_NONE, M_PARTIAL, M_FULL, M_FREE };
struct page *page = c->page;
struct kmem_cache_node *n = get_node(s, page_to_nid(page));
int lock = 0;
enum slab_modes l = M_NONE, m = M_NONE;
void *freelist;
void *nextfree;
int tail = DEACTIVATE_TO_HEAD;
struct page new;
@ -1747,11 +1745,6 @@ static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c)
tail = DEACTIVATE_TO_TAIL;
}
c->tid = next_tid(c->tid);
c->page = NULL;
freelist = c->freelist;
c->freelist = NULL;
/*
* Stage one: Free all available per cpu objects back
* to the page freelist while it is still frozen. Leave the
@ -2009,7 +2002,11 @@ int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
static inline void flush_slab(struct kmem_cache *s, struct kmem_cache_cpu *c)
{
stat(s, CPUSLAB_FLUSH);
deactivate_slab(s, c);
deactivate_slab(s, c->page, c->freelist);
c->tid = next_tid(c->tid);
c->page = NULL;
c->freelist = NULL;
}
/*
@ -2229,7 +2226,9 @@ static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
if (unlikely(!node_match(c, node))) {
stat(s, ALLOC_NODE_MISMATCH);
deactivate_slab(s, c);
deactivate_slab(s, c->page, c->freelist);
c->page = NULL;
c->freelist = NULL;
goto new_slab;
}
@ -2289,8 +2288,9 @@ static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
if (!alloc_debug_processing(s, c->page, freelist, addr))
goto new_slab; /* Slab failed checks. Next slab needed */
c->freelist = get_freepointer(s, freelist);
deactivate_slab(s, c);
deactivate_slab(s, c->page, get_freepointer(s, freelist));
c->page = NULL;
c->freelist = NULL;
local_irq_restore(flags);
return freelist;
}