linux-kernel - Re: [PATCH 1/2] zbud: allow PAGE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMJBoFNmK94yPL7GkRPyeyETn8_dC+zCvd8efEH=ncgPDyuJuQ@mail.gmail.com>
Date:	Fri, 18 Sep 2015 10:03:22 +0200
From:	Vitaly Wool <vitalywool@...il.com>
To:	Dan Streetman <ddstreet@...e.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan@...nel.org>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Re: [PATCH 1/2] zbud: allow PAGE_SIZE allocations

> I don't know how zsmalloc handles uncompressible PAGE_SIZE allocations, but
> I wouldn't expect it to be any more clever than this? So why duplicate the
> functionality in zswap and zbud? This could be handled e.g. at the zpool
> level? Or maybe just in zram, as IIRC in zswap (frontswap) it's valid just
> to reject a page and it goes to physical swap.

>From what I can see, zsmalloc just allocates pages and puts them into
a linked list. Using the beginning of a page for storing an internal
struct is zbud-specific, and so is this patch.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/