[PATCH 1/5] staging: zsmalloc: zsmalloc memory allocation library

[Dave Hansen]

On 02/08/2012 01:39 PM, Dan Magenheimer wrote:
>> > map_vm_area() needs 'struct vm_struct' parameter but for mapping kernel
>> > allocated pages within kernel, what should we pass here?  I think we can
>> > instead use map_kernel_range_noflush() -- surprisingly
>> > unmap_kernel_range_noflush() is exported but this one is not.
> Creating a dependency on a core kernel change (even just an EXPORT_SYMBOL)
> is probably not a good idea.  Unless Dave vehemently objects, I'd suggest
> implementing it both ways, leaving the method that relies on the
> kernel change ifdef'd out, and add this to "the list of things that
> need to be done before zcache can be promoted out of staging".

Seems like a sane approach to me.