From: Dave Chinner <dchinner@redhat.com>
Date: Sun, 29 Apr 2012 12:43:19 +0000 (+1000)
Subject: xfs: limit specualtive delalloc to maxioffset
X-Git-Tag: v3.5-rc1~91^2~30
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ed9116e8a3e9c0870b2076340b3da9b8f900f3b;p=pandora-kernel.git

xfs: limit specualtive delalloc to maxioffset

Speculative delayed allocation beyond EOF near the maximum supported
file offset can result in creating delalloc extents beyond
mp->m_maxioffset (8EB). These can never be trimmed during
xfs_free_eof_blocks() because they are beyond mp->m_maxioffset, and
that results in assert failures in xfs_fs_destroy_inode() due to
delalloc blocks still being present. xfstests 071 exposes this
problem.

Limit speculative delalloc to mp->m_maxioffset to avoid this
problem.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
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