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From: Nishanth Aravamudan <nacc@us.ibm.com>
To: Christoph Hellwig <hch@lst.de>
Cc: xfs-masters@oss.sgi.com, sfrench@samba.org, sct@redhat.com,
	okir@monad.swb.de.sgi.com, trond.myklebust@fys.uio.no,
	reiserfs-dev@namesys.com, urban@teststation.com, nathans@sgi.com,
	akpm@osdl.org, samba-technical@lists.samba.org,
	linux-kernel@vger.kernel.org, reiserfs-list@namesys.com,
	samba@samba.org, linux-xfs@oss.sgi.com
Subject: Re: [xfs-masters] [-mm PATCH 2/32] fs: fix-up schedule_timeout() usage
Date: Mon, 15 Aug 2005 11:40:13 -0700	[thread overview]
Message-ID: <20050815184013.GJ2854@us.ibm.com> (raw)
In-Reply-To: <20050815181752.GA23701@lst.de>

On 15.08.2005 [20:17:52 +0200], Christoph Hellwig wrote:
> On Mon, Aug 15, 2005 at 11:08:04AM -0700, Nishanth Aravamudan wrote:
> > Description: Use schedule_timeout_{,un}interruptible() instead of
> > set_current_state()/schedule_timeout() to reduce kernel size. Also use
> > helper functions to convert between human time units and jiffies rather
> > than constant HZ division to avoid rounding errors.
> 
> The XFS changes are still wrong for the same rason as last time,
> we actually do want the daemons to do work if they're woken earlier
> using wake_up_process.

Hrm, I got dropped from the Cc list...? No worries, I'm subscribed in
two places :)

I think your reference to "last time" is the KJ patches which probably
used msleep{,_interruptible}() instead of schedule_timeout(). This
patchset, in contrast, should result in *no* functional changes (beyond
some more precisie conversions, where appropriate).
schedule_timeout_interruptible(some_value), for instance is nothing more than:

	set_current_state(TASK_INTERRUPTIBLE);
	schedule_timeout(some_value);

Just in the form of a combine function call. No loops like msleep() &
co.

Is the patch still a problem?

Thanks,
Nish

  reply	other threads:[~2005-08-15 18:40 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-08-15 18:05 [-mm PATCH 0/32] fix-up schedule_timeout() usage Nishanth Aravamudan
2005-08-15 18:06 ` [-mm PATCH 1/32] include: update jiffies/{m,u}secs conversion functions Nishanth Aravamudan
2005-08-17 23:35   ` Andrew Morton
2005-08-18  3:19     ` Nishanth Aravamudan
2005-08-15 18:08 ` [-mm PATCH 2/32] fs: fix-up schedule_timeout() usage Nishanth Aravamudan
2005-08-15 18:17   ` [xfs-masters] " Christoph Hellwig
2005-08-15 18:40     ` Nishanth Aravamudan [this message]
2005-08-15 20:36       ` Christoph Hellwig
2005-08-15 18:37   ` Stephen C. Tweedie
2005-08-15 18:08 ` [-mm PATCH 3/32] kernel: " Nishanth Aravamudan
2005-08-15 18:09 ` [-mm PATCH 4/32] mm: " Nishanth Aravamudan
2005-08-15 18:18 ` [-mm PATCH 17/32] drivers/cdrom: " Nishanth Aravamudan
2005-08-15 18:19 ` [-mm PATCH 19/32] drivers/dlm: " Nishanth Aravamudan
2005-08-15 18:25 ` [-mm PATCH 26/32] message: " Nishanth Aravamudan
2005-08-15 18:26 ` [-mm PATCH 28/32] drivers/sbus: " Nishanth Aravamudan
2005-08-15 18:29 ` [-mm PATCH 31/32] telephony: " Nishanth Aravamudan

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