[S390] pgtable_list corruption
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 31 Jan 2011 10:30:04 +0000 (11:30 +0100)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>
Mon, 31 Jan 2011 10:30:20 +0000 (11:30 +0100)
After page_table_free_rcu removed a page from the pgtable_list
page_table_free better not add it again. Otherwise a page_table_alloc
can reuse a page table fragment that is still in the rcu process.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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