[Ocfs2-devel] [BUG] system hang when copying with reading

[Ling, Xiaofeng]

Step:
node A: copy a file "bb.txt" of 200M to ocfs root
node B: cd ocfs root, run "head bb.txt"
Result:
node B hangs.
by kdb, three process went into "D" status. head, ocfs2cmt, kjourand
in head, it is in ocfs_notify_truncate_on_wopen, 
in ocfs2cmt, it is in ocfs_commit_cache.

It's ok if head run on same node.
report it as bug 117
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xfling at users.sourceforge.net
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