Re: [PATCH 1/7] genalloc: track beginning of allocations

From: Igor Stoppa
Date: Wed Mar 07 2018 - 05:52:37 EST




On 06/03/18 18:05, Igor Stoppa wrote:
> On 06/03/2018 16:10, Matthew Wilcox wrote:

[...]

>> This seems unnecessarily complicated.
>
> TBH it seemed to me a natural extension of the existing encoding :-)

BTW, to provide some background, this is where it begun:

http://www.openwall.com/lists/kernel-hardening/2017/08/18/4

Probably that comment about "keeping existing behavior and managing two
bitmaps locklessly" is what made me think of growing the 1-bit-per-unit
into a 1-word-per-unit.

--
igor