From: Dave Chinner <david@fromorbit.com>
Date: Sat, 2 Jan 2010 02:39:40 +0000 (+0000)
Subject: xfs: Don't flush stale inodes
X-Git-Tag: v2.6.33-rc4~13^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=44e08c45cc14e6190a424be8d450070c8e508fad;p=pandora-kernel.git

xfs: Don't flush stale inodes

Because inodes remain in cache much longer than inode buffers do
under memory pressure, we can get the situation where we have
stale, dirty inodes being reclaimed but the backing storage has
been freed.  Hence we should never, ever flush XFS_ISTALE inodes
to disk as there is no guarantee that the backing buffer is in
cache and still marked stale when the flush occurs.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
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