From ce71e27c6fdc43c29f36d307b9100bde70c947fc Mon Sep 17 00:00:00 2001 From: Eduard - Gabriel Munteanu Date: Tue, 19 Aug 2008 20:43:25 +0300 Subject: SLUB: Replace __builtin_return_address(0) with _RET_IP_. This patch replaces __builtin_return_address(0) with _RET_IP_, since a previous patch moved _RET_IP_ and _THIS_IP_ to include/linux/kernel.h and they're widely available now. This makes for shorter and easier to read code. [penberg@cs.helsinki.fi: remove _RET_IP_ casts to void pointer] Signed-off-by: Eduard - Gabriel Munteanu Signed-off-by: Pekka Enberg --- mm/slab.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'mm/slab.c') diff --git a/mm/slab.c b/mm/slab.c index 09187517f9dc..a14787799014 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3686,9 +3686,9 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) EXPORT_SYMBOL(__kmalloc_node); void *__kmalloc_node_track_caller(size_t size, gfp_t flags, - int node, void *caller) + int node, unsigned long caller) { - return __do_kmalloc_node(size, flags, node, caller); + return __do_kmalloc_node(size, flags, node, (void *)caller); } EXPORT_SYMBOL(__kmalloc_node_track_caller); #else @@ -3730,9 +3730,9 @@ void *__kmalloc(size_t size, gfp_t flags) } EXPORT_SYMBOL(__kmalloc); -void *__kmalloc_track_caller(size_t size, gfp_t flags, void *caller) +void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller) { - return __do_kmalloc(size, flags, caller); + return __do_kmalloc(size, flags, (void *)caller); } EXPORT_SYMBOL(__kmalloc_track_caller); -- cgit v1.2.3 From 249b9f331ec162af5a1fdb80f90cce77c2043985 Mon Sep 17 00:00:00 2001 From: roel kluin Date: Wed, 29 Oct 2008 17:18:07 -0400 Subject: slab: unsigned slabp->inuse cannot be less than 0 unsigned slabp->inuse cannot be less than 0 Acked-by: Christoph Lameter Signed-off-by: Pekka Enberg --- mm/slab.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'mm/slab.c') diff --git a/mm/slab.c b/mm/slab.c index a14787799014..445bcc87b346 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2997,7 +2997,7 @@ retry: * there must be at least one object available for * allocation. */ - BUG_ON(slabp->inuse < 0 || slabp->inuse >= cachep->num); + BUG_ON(slabp->inuse >= cachep->num); while (slabp->inuse < cachep->num && batchcount--) { STATS_INC_ALLOCED(cachep); -- cgit v1.2.3 From 249da166582801648432d0198be9407fb5ccf9f5 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 21 Nov 2008 12:56:22 +0000 Subject: slab: Update the kmem_cache_create documentation regarding the name parameter kmem_cache implementations like slub are allowed to merge multiple caches but only the initial name is preserved. Therefore, kmem_cache_name() is not guaranteed to return the same pointer passed to the former function. This patch updates the documentation to make this clearer. Signed-off-by: Catalin Marinas Signed-off-by: Pekka Enberg --- mm/slab.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'mm/slab.c') diff --git a/mm/slab.c b/mm/slab.c index 09187517f9dc..c366e3910e89 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2123,6 +2123,8 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep) * * @name must be valid until the cache is destroyed. This implies that * the module calling this has to destroy the cache before getting unloaded. + * Note that kmem_cache_name() is not guaranteed to return the same pointer, + * therefore applications must manage it themselves. * * The flags are * -- cgit v1.2.3