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Re: system crash when much disk io

From: Roland McGrath
Subject: Re: system crash when much disk io
Date: Sat, 24 Nov 2001 17:03:09 -0500 (EST)

> This is a bug.  I have attached a patch.  Could you give it a try and
> see if the bug shows up again (I have never actually seen it on my
> system)?

I think your fix is wrong.  The allocation ought to have already happened
in pager_unlock page before it becomes possible for file_pager_write_page
to get called for that page.  As the comment says, pager_unlock_page
and diskfs_grow are the only places data blocks get allocated.

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