[PATCH][nandsim]Fix RAM wasting via kmalloc (take 2)

[Artem Bityutskiy]

On Wed, 2008-10-29 at 13:14 +0000, Alexey Korolev wrote:
> Hi All,
> 
> Nandsim consumes ~2x more RAM than the density of simulated device. 
> It becomes critical if we need to simulate 256MB NAND and run stress tests 
> on it.
> 
> We investigated the reasons. nandsim allocates space for pages using kmalloc
> function. The size of LP nand page is 2112 bytes.
> kmalloc gets space from slab pools by chunks 2^n. So if we need to kmalloc
> 2112 bytes, 4096 bytes will be consumed by system.
> The best way to avoid this issue would be using kmem_cache allocations. AFAIK
> this mechanism specially designed to handle cases when arrays of allocations
> are used.

Would you please send a version which checks return pointer of
kmem_cache_alloc() for NULL?

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)