diff options
| author | Wei Yang <richard.weiyang@gmail.com> | 2017-07-07 00:36:25 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-07 01:24:30 +0200 |
| commit | d4ff6d35f618023f7b2edc5ce1a2f84362f1e7fe (patch) | |
| tree | cb4e877feda5ff87970bc765ff121a3d149817c1 /mm/slub.c | |
| parent | mm/slub.c: remove a redundant assignment in ___slab_alloc() (diff) | |
| download | linux-d4ff6d35f618023f7b2edc5ce1a2f84362f1e7fe.tar.xz linux-d4ff6d35f618023f7b2edc5ce1a2f84362f1e7fe.zip | |
mm/slub: reset cpu_slab's pointer in deactivate_slab()
Each time a slab is deactivated, the page and freelist pointer should be
reset.
This patch just merges these two options into deactivate_slab().
Link: http://lkml.kernel.org/r/20170507031215.3130-2-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
| -rw-r--r-- | mm/slub.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/mm/slub.c b/mm/slub.c index b6b637503d77..7234e0e03bdc 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1993,7 +1993,7 @@ static void init_kmem_cache_cpus(struct kmem_cache *s) * Remove the cpu slab */ static void deactivate_slab(struct kmem_cache *s, struct page *page, - void *freelist) + void *freelist, struct kmem_cache_cpu *c) { enum slab_modes { M_NONE, M_PARTIAL, M_FULL, M_FREE }; struct kmem_cache_node *n = get_node(s, page_to_nid(page)); @@ -2132,6 +2132,9 @@ redo: discard_slab(s, page); stat(s, FREE_SLAB); } + + c->page = NULL; + c->freelist = NULL; } /* @@ -2266,11 +2269,9 @@ static void 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->page, c->freelist); + deactivate_slab(s, c->page, c->freelist, c); c->tid = next_tid(c->tid); - c->page = NULL; - c->freelist = NULL; } /* @@ -2521,9 +2522,7 @@ redo: if (unlikely(!node_match(page, searchnode))) { stat(s, ALLOC_NODE_MISMATCH); - deactivate_slab(s, page, c->freelist); - c->page = NULL; - c->freelist = NULL; + deactivate_slab(s, page, c->freelist, c); goto new_slab; } } @@ -2534,9 +2533,7 @@ redo: * information when the page leaves the per-cpu allocator */ if (unlikely(!pfmemalloc_match(page, gfpflags))) { - deactivate_slab(s, page, c->freelist); - c->page = NULL; - c->freelist = NULL; + deactivate_slab(s, page, c->freelist, c); goto new_slab; } @@ -2591,9 +2588,7 @@ new_slab: !alloc_debug_processing(s, page, freelist, addr)) goto new_slab; /* Slab failed checks. Next slab needed */ - deactivate_slab(s, page, get_freepointer(s, freelist)); - c->page = NULL; - c->freelist = NULL; + deactivate_slab(s, page, get_freepointer(s, freelist), c); return freelist; } |