Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Thu, 15 Mar 2018 15:43:49 +0200
From: Igor Stoppa <>
To: Matthew Wilcox <>
CC: <>, <>, <>,
	<>, <>,
	<>, <>,
	<>, <>
Subject: Re: [RFC PATCH v19 0/8] mm: security: ro protection for dynamic data

On 14/03/2018 19:33, Matthew Wilcox wrote:
> On Wed, Mar 14, 2018 at 06:11:22PM +0200, Igor Stoppa wrote:


>> Probably page_frag does well with relatively large allocations, while
>> genalloc seems to be better for small (few allocation units) allocations.
> I don't understand why you would think that.  If you allocate 4096 1-byte
> elements, page_frag will just use up a page.  Doing the same thing with
> genalloc requires allocating two bits per byte (1kB of bitmap), plus
> other overheads.

I had misunderstood the amount of page_frag structures needed.


Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.