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  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]
Date:	Thu, 04 Apr 2013 17:30:32 -0500
From:	Seth Jennings <>
To:	Seth Jennings <>
CC:	Andrew Morton <>,
	Greg Kroah-Hartman <>,
	Nitin Gupta <>,
	Minchan Kim <>,
	Konrad Rzeszutek Wilk <>,
	Dan Magenheimer <>,
	Robert Jennings <>,
	Jenifer Hopper <>,
	Mel Gorman <>,
	Johannes Weiner <>,
	Rik van Riel <>,
	Larry Woodman <>,
	Benjamin Herrenschmidt <>,
	Dave Hansen <>,
	Joe Perches <>,
	Joonsoo Kim <>,
	Cody P Schafer <>,
	Hugh Dickens <>,
	Paul Mackerras <>,,,,
	Bob Liu <>
Subject: Re: [PATCHv8 5/8] mm: break up swap_writepage() for frontswap backends

On 04/04/2013 05:10 PM, Seth Jennings wrote:
> swap_writepage() is currently where frontswap hooks into the swap
> write path to capture pages with the frontswap_store() function.
> However, if a frontswap backend wants to "resume" the writeback of
> a page to the swap device, it can't call swap_writepage() as
> the page will simply reenter the backend.
> This patch separates swap_writepage() into a top and bottom half, the
> bottom half named __swap_writepage() to allow a frontswap backend,
> like zswap, to resume writeback beyond the frontswap_store() hook.
> __add_to_swap_cache() is also made non-static so that the page for
> which writeback is to be resumed can be added to the swap cache.
> Acked-by: Minchan Kim <>
> Signed-off-by: Seth Jennings <>

Adding Cc Bob Liu.

I just remembered that Bob had done a repost of the 5 and 6 patches,
outside the zswap thread,  with a small change to avoid a checkpatch
warning.  I didn't pull that change into my version, but I should have.

It doesn't make a functional difference, so this patch can still go
forward and the checkpatch warning can be cleaned up in a subsequent
patch.  If another revision of the patchset is needed for other
reasons, I'll pull this change into the next version.

I think Dan and Bob would be ok with their tags being applied to 5 and 6:

Acked-by: Bob Liu <>
Reviewed-by: Dan Magenheimer <>

That ok?


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists