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Date: Thu, 01 Feb 2001 11:31:42 -0500
From: Chris Mason <mason@suse.com>
To: Rik van Riel <riel@conectiva.com.br>, David Ford <david@linux.com>
cc: LKML <linux-kernel@vger.kernel.org>, reiserfs-list@namesys.com
Subject: Re: [reiserfs-list] Re: VM brokenness, possibly related to reiserfs
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On Thursday, February 01, 2001 02:16:43 PM -0200 Rik van Riel <riel@conectiva.com.br> wrote:

> 
> About the system hanging completely, I wonder if it goes
> away by pressing sysrq-S (sync all disks). If it does,
> maybe Reiserfs was blocking all the pages in the inactive
> list from being written because one of the active pages
> (not a replacement candidate) needed to be written out
> first?  Or does the Reiserfs ->writepage() function handle
> this?
> 

In most cases, the reiserfs writepage func is the same as block_write_full_page.  The only difference should come when a packed tail has been mmap'd.

Since JOURNAL_MAX_BATCH was at 100, the log should have only pinned 400k.  More blocks could be pinned, but kreiserfsd should be in the process of flushing those.

I've been trying out a few things to send memory pressure down to reiserfs, but they have mostly been based on the code to make fs/buffer.c use writepage for flushing.  I should have done something simple first, I'll start on that now.

-chris

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