kmem_cache_ *是否创建连续内存? [英] kmem_cache_* creates contiguous memory?

问题描述

我是对的，假设用kmem_cache_create和kmem_cache_alloc创建并分配的内存平板是连续的吗?

Am I right assuming that a memory slab created and allocated with kmem_cache_create and kmem_cache_alloc is contiguous?

推荐答案

• kmem_cache由1个或多个平板组成.
• 一个平板由1个或多个连续的页面组成.

因此，当您调用kmem_cache_alloc时，它将在包含1个或多个连续页面的slab中返回一块内存.

So when you call kmem_cache_alloc, it returns you a piece of memory in a slab which consists of 1 or more contiguous pages.

但是，如果您两次调用kmem_cache_alloc，则您获得的2条内存可能是不连续的.

But if you call kmem_cache_alloc twice, the 2 pieces of memory you get may not contiguous.

kmem_cache_create仅创建和初始化kmem_cache的数据结构，不分配内存.

And kmem_cache_create only creates and initializes the data structure for a kmem_cache and do not allocate the memories.

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