From: Matt Mackall <mpm@selenic.com>
To: Thomas Tuttle <ttuttle@google.com>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/5] pagemap: Make pagemap_read enforce reading in multiples of 8
Date: Thu, 05 Jun 2008 11:03:42 -0500 [thread overview]
Message-ID: <1212681822.3953.162.camel@calx> (raw)
In-Reply-To: <4ca0a85e0806050806r38de18dft8927e093a8e47abd@mail.gmail.com>
On Thu, 2008-06-05 at 11:06 -0400, Thomas Tuttle wrote:
> Since kpagecount and kpageflags require reads in multiples of 8, and
> it simplifies add_to_pagemap significantly, I added the same
> requirement to /proc/pid/pagemap.
I'm generally fine with this. Another approach that's perhaps more
friendly is when someone tries to do a 24-byte read, do a 16-byte read,
leaving the file pointer aligned. Not sure if that's completely kosher
though.
--
Mathematics is the supreme nostalgia of our time.
next prev parent reply other threads:[~2008-06-05 16:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-05 15:06 [PATCH 3/5] pagemap: Make pagemap_read enforce reading in multiples of 8 Thomas Tuttle
2008-06-05 16:03 ` Matt Mackall [this message]
2008-06-05 16:05 ` Thomas Tuttle
2008-06-05 16:09 ` Matt Mackall
2008-06-05 16:14 ` Thomas Tuttle
2008-06-05 16:21 ` Matt Mackall
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