Date: Tue, 29 Jan 2008 00:29:28 -0800 (PST)
From: david@lang.hm
To: Theodore Tso <tytso@MIT.EDU>
cc: Pavel Machek <pavel@ucw.cz>, Valdis.Kletnieks@vt.edu,
       David Chinner <dgc@sgi.com>, Valerie Henson <val@vahconsulting.com>,
       linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
       linux-kernel@vger.kernel.org, Andreas Dilger <adilger@clusterfs.com>,
       Ric Wheeler <ric@emc.com>
Subject: Re: [RFC] Parallelize IO for e2fsck
In-Reply-To: <20080128195633.GB20528@mit.edu>
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On Mon, 28 Jan 2008, Theodore Tso wrote:

> On Mon, Jan 28, 2008 at 07:30:05PM +0000, Pavel Machek wrote:
>>
>> As user pages are always in highmem, this should be easy to decide:
>> only send SIGDANGER when highmem is full. (Yes, there are
>> inodes/dentries/file descriptors in lowmem, but I doubt apps will
>> respond to SIGDANGER by closing files).
>
> Good point; for a system with at least (say) 2GB of memory, that
> definitely makes sense.  For a system with less than 768 megs of
> memory (how quaint, but it wasn't that long ago this was a lot of
> memory :-), there wouldn't *be* any memory in highmem at all....

not to mention machines with 1G of ram (900M lowmem, 128M highmem)

David Lang
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