[PATCH 2.5.73-mm1] Make sure truncate fix has no race

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Paul McKenney pointed out that reading the truncate sequence number in
do_no_page might not be entirely safe if the ->nopage callout takes no
locks. The simple solution is to move the read before the unlock of
page_table_lock. Here's a patch that does it.

Dave McCracken

======================================================================
Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
dmccr@us.ibm.com T/L 678-3059

• text/plain attachment: trunc-2.5.73-mm1-1.diff

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