On Thu, Nov 22, 2012 at 9:39 AM, Mulyadi Santosa <mulyadi.santosa@gmail.com> wrote:
On Thu, Nov 22, 2012 at 10:12 AM, horse_rivers <horse_rivers@126.com> wrote:
thanks!
kmalloc allocates memory from slab cache. It tends to be physically contigous and you can get memory size smaller than page size.
vmalloc, on the other hand, is when you need only virtually contigous memory area. Example of such usage is for allocating memory to load kernel module.
Is it necessary that vmalloc always allocate virtually contiguous memory and not physically contiguous? Except large size memory allocation why one needs to use vmalloc? Can we say that use kmalloc and if it fails retry with kmalloc? regards Vijay
-- regards,
Mulyadi Santosa Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com
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