Re: [PATCH 00/38] mm: remove non-linear mess
From: Felipe Balbi
Date: Fri Dec 26 2014 - 16:12:08 EST
On Wed, Dec 24, 2014 at 02:22:08PM +0200, Kirill A. Shutemov wrote:
> We have remap_file_pages(2) emulation in -mm tree for few release cycles
> and we plan to have it mainline in v3.20. This patchset removes rest of
> VM_NONLINEAR infrastructure.
> Patches 1-8 take care about generic code. They are pretty
> straight-forward and can be applied without other of patches.
> Rest patches removes pte_file()-related stuff from architecture-specific
> code. It usually frees up one bit in non-present pte. I've tried to reuse
> that bit for swap offset, where I was able to figure out how to do that.
> For obvious reason I cannot test all that arch-specific code and would
> like to see acks from maintainers.
> In total, remap_file_pages(2) required about 1.4K lines of not-so-trivial
> kernel code. That's too much for functionality nobody uses.
> git://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git remap_file_pages
have been running this for a while on a three different ARM boards I
have around, haven't noticed anything wrong.
Tested-by: Felipe Balbi <balbi@xxxxxx>
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