On 2014年07月23日 05:57, David Rientjes wrote:
> On Tue, 22 Jul 2014, Wang Sheng-Hui wrote:
>
>>
>> Current struct kmem_cache has no 'lock' field, and slab page is
>> managed by struct kmem_cache_node, which has 'list_lock' field.
>>
>> Clean up the related comment.
>>
>
> I think this is fine, but not sure if the s/slab/slab page/ change makes
> anything clearer and is unmentioned in the changelog.
>
David,
I used "slab page" to mention the pages used for slab.
Hope that won't introduce any confusion/misunderstanding.
Regards,
Sheng-Hui
>> Signed-off-by: Wang Sheng-Hui <shhuiw@xxxxxxxxx>
>> ---
>> mm/slab.c | 9 +++++----
>> 1 file changed, 5 insertions(+), 4 deletions(-)
>>
>> diff --git a/mm/slab.c b/mm/slab.c
>> index 3070b92..8f7170f 100644
>> --- a/mm/slab.c
>> +++ b/mm/slab.c
>> @@ -1724,7 +1724,8 @@ slab_out_of_memory(struct kmem_cache *cachep, gfp_t gfpflags, int nodeid)
>> }
>>
>> /*
>> - * Interface to system's page allocator. No need to hold the cache-lock.
>> + * Interface to system's page allocator. No need to hold the
>> + * kmem_cache_node ->list_lock.
>> *
>> * If we requested dmaable memory, we will get it. Even if we
>> * did not request dmaable memory, we might get it, but that
>> @@ -2026,9 +2027,9 @@ static void slab_destroy_debugcheck(struct kmem_cache *cachep,
>> * @cachep: cache pointer being destroyed
>> * @page: page pointer being destroyed
>> *
>> - * Destroy all the objs in a slab, and release the mem back to the system.
>> - * Before calling the slab must have been unlinked from the cache. The
>> - * cache-lock is not held/needed.
>> + * Destroy all the objs in a slab page, and release the mem back to the system.
>> + * Before calling the slab page must have been unlinked from the cache. The
>> + * kmem_cache_node ->list_lock is not held/needed.
>> */
>> static void slab_destroy(struct kmem_cache *cachep, struct page *page)
>> {
--
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