kernel.git/mm/slab_common.c, branch linux-3.6.y

mm: Fix build warning in kmem_cache_create()

2012-07-30T10:15:40Z

The label oops is used in CONFIG_DEBUG_VM ifdef block and is defined outside ifdef CONFIG_DEBUG_VM block. This results in the following build warning when built with CONFIG_DEBUG_VM disabled. Fix to move label oops definition to inside a CONFIG_DEBUG_VM block. mm/slab_common.c: In function ‘kmem_cache_create’: mm/slab_common.c:101:1: warning: label ‘oops’ defined but not used [-Wunused-label] Signed-off-by: Shuah Khan Signed-off-by: Pekka Enberg

mm, sl[aou]b: Move kmem_cache_create mutex handling to common code

2012-07-09T09:13:42Z

Move the mutex handling into the common kmem_cache_create() function. Then we can also move more checks out of SLAB's kmem_cache_create() into the common code. Reviewed-by: Glauber Costa Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg

mm, sl[aou]b: Use a common mutex definition

2012-07-09T09:13:41Z

Use the mutex definition from SLAB and make it the common way to take a sleeping lock. This has the effect of using a mutex instead of a rw semaphore for SLUB. SLOB gains the use of a mutex for kmem_cache_create serialization. Not needed now but SLOB may acquire some more features later (like slabinfo / sysfs support) through the expansion of the common code that will need this. Reviewed-by: Glauber Costa Reviewed-by: Joonsoo Kim Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg

mm, sl[aou]b: Common definition for boot state of the slab allocators

2012-07-09T09:13:35Z

All allocators have some sort of support for the bootstrap status. Setup a common definition for the boot states and make all slab allocators use that definition. Reviewed-by: Glauber Costa Reviewed-by: Joonsoo Kim Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg

mm, sl[aou]b: Extract common code for kmem_cache_create()

2012-07-09T09:13:30Z

Kmem_cache_create() does a variety of sanity checks but those vary depending on the allocator. Use the strictest tests and put them into a slab_common file. Make the tests conditional on CONFIG_DEBUG_VM. This patch has the effect of adding sanity checks for SLUB and SLOB under CONFIG_DEBUG_VM and removes the checks in SLAB for !CONFIG_DEBUG_VM. Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg