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From: Nick Piggin <npiggin@suse.de>
To: Andi Kleen <andi@firstfloor.org>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, fengguang.wu@intel.com,
	hidehiro.kawai.ez@hitachi.com, linux-arch@vger.kernel.org
Subject: Re: [PATCH] [11/19] HWPOISON: Refactor truncate to allow direct truncating of page v2
Date: Wed, 5 Aug 2009 16:44:02 +0200	[thread overview]
Message-ID: <20090805144402.GD23992@wotan.suse.de> (raw)
In-Reply-To: <20090805144112.GM11385@basil.fritz.box>

On Wed, Aug 05, 2009 at 04:41:12PM +0200, Andi Kleen wrote:
> > One question I had for the others (Andrew? other mm guys?) what is the
> > feelings of merging this feature? Leaving aside exact implementation
> > and just considering the high level design and cost/benefit. Last time
> > there were some people objecting, so I wonder the situation now? So
> > does anybody need more convincing? :)
> 
> The main objection last time was that it was a bit too late in the 
> release schedule.
> 
> I can't remember anyone really questioning the basic feature itself.

I can't exactly remember. Maybe it was in a thread with Alan and/or
Arjan ;) I don't think the feature itself was questioned as much as
cost/benefit. Maybe I was wrong...

I just want to see everyone is happy with the basic idea ;)


> > Also I will just cc linux-arch. It would be interesting to know whether
> > powerpc, ia64, or s390 or others would be interested to use this feature?
> 
> ia64 is interested (but no code so far) I talked to DaveM and he seems to be 
> interested for sparc too.  I would expect other server architectures to 
> eventually use it as they get around to writing the necessary architecture 
> specific glue.

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  reply	other threads:[~2009-08-05 14:44 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-08-05  9:36 [PATCH] [0/19] HWPOISON: Intro Andi Kleen
2009-08-05  9:36 ` [PATCH] [1/19] HWPOISON: Add page flag for poisoned pages Andi Kleen
2009-08-05  9:36 ` [PATCH] [2/19] HWPOISON: Export some rmap vma locking to outside world Andi Kleen
2009-08-05  9:36 ` [PATCH] [3/19] HWPOISON: Add support for poison swap entries v2 Andi Kleen
2009-08-05  9:36 ` [PATCH] [4/19] HWPOISON: Add new SIGBUS error codes for hardware poison signals Andi Kleen
2009-08-05  9:36 ` [PATCH] [5/19] HWPOISON: Add basic support for poisoned pages in fault handler v3 Andi Kleen
2009-08-05  9:36 ` [PATCH] [6/19] HWPOISON: Add various poison checks in mm/memory.c v2 Andi Kleen
2009-08-05  9:36 ` [PATCH] [7/19] HWPOISON: x86: Add VM_FAULT_HWPOISON handling to x86 page fault handler v2 Andi Kleen
2009-08-05  9:36 ` [PATCH] [8/19] HWPOISON: Use bitmask/action code for try_to_unmap behaviour Andi Kleen
2009-08-05  9:36 ` [PATCH] [9/19] HWPOISON: Handle hardware poisoned pages in try_to_unmap Andi Kleen
2009-08-05  9:36 ` [PATCH] [10/19] HWPOISON: check and isolate corrupted free pages v2 Andi Kleen
2009-08-05  9:36 ` [PATCH] [11/19] HWPOISON: Refactor truncate to allow direct truncating of page v2 Andi Kleen
2009-08-05 10:20   ` Nick Piggin
2009-08-05 12:37     ` Wu Fengguang
2009-08-05 13:46     ` Andi Kleen
2009-08-05 14:01       ` Nick Piggin
2009-08-05 14:10         ` Andi Kleen
2009-08-05 14:16           ` Nick Piggin
2009-08-05 14:41             ` Andi Kleen
2009-08-05 14:44               ` Nick Piggin [this message]
2009-08-05 15:00               ` Matthew Wilcox
2009-08-06 11:48             ` Martin Schwidefsky
2009-08-06 12:04               ` Andi Kleen
2009-08-05 15:12         ` Wu Fengguang
2009-08-05  9:36 ` [PATCH] [12/19] HWPOISON: Add invalidate_inode_page Andi Kleen
2009-08-05  9:36 ` [PATCH] [13/19] HWPOISON: Define a new error_remove_page address space op for async truncation Andi Kleen
2009-08-05  9:36 ` [PATCH] [14/19] HWPOISON: Add PR_MCE_KILL prctl to control early kill behaviour per process Andi Kleen
2009-08-05  9:36 ` [PATCH] [15/19] HWPOISON: The high level memory error handler in the VM v7 Andi Kleen
2009-08-05  9:36 ` [PATCH] [16/19] HWPOISON: Enable .remove_error_page for migration aware file systems Andi Kleen
2009-08-05 11:12   ` Christoph Hellwig
2009-08-05 11:52     ` Wu Fengguang
2009-08-05 13:50     ` Andi Kleen
2009-08-10  6:36   ` Hidehiro Kawai
2009-08-10  7:07     ` Wu Fengguang
2009-08-11  3:48       ` Hidehiro Kawai
2009-08-11  6:59         ` Andi Kleen
2009-08-11 12:38         ` Wu Fengguang
2009-08-10  7:44     ` Andi Kleen
2009-08-11  3:50       ` Hidehiro Kawai
2009-08-11  7:17         ` Andi Kleen
2009-08-12  2:49           ` Hidehiro Kawai
2009-08-12  7:46             ` Andi Kleen
2009-08-12  9:52               ` Hidehiro Kawai
2009-08-12 10:16                 ` Andi Kleen
2009-08-12  8:05           ` Nick Piggin
2009-08-12  8:23             ` Andi Kleen
2009-08-12  8:46               ` Nick Piggin
2009-08-12  8:57                 ` Andi Kleen
2009-08-12  9:05                   ` Nick Piggin
2009-08-12  9:39                     ` Wu Fengguang
2009-08-05  9:36 ` [PATCH] [17/19] HWPOISON: Enable error_remove_page for NFS Andi Kleen
2009-08-05  9:36 ` [PATCH] [18/19] HWPOISON: Add madvise() based injector for hardware poisoned pages v3 Andi Kleen
2009-08-05  9:36 ` [PATCH] [19/19] HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs Andi Kleen

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