Re: [RFC] kmem_cache_zalloc

Dipankar Sarma (
Thu, 28 Mar 2002 16:51:42 +0530

In article <> Christoph Hellwig wrote:

> I'd really go for k(mem_)zalloc, but a kmem_cache_alloc leads people toward
> writing bad code. The purpose of the slab allocator is to allow caching
> readily constructed objects, a _zalloc destroys them on alloc.

I thought that the life span of an object is between
kmem_cache_alloc and kmem_cache_free. If you are expecting caching
beyond this, you may not get correct data. kmem_cache allocator
is supposed to quickly allocate fixed size structures avoiding
the need for frequent splitting and coalescing in the allocator.

Am I missing something here ?


Dipankar Sarma  <>
Linux Technology Center, IBM Software Lab, Bangalore, India.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at