s390/mm: page_table_realloc returns failure

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There is a possible race between setting has_pgste and reallocation of the
page_table, change the order to fix this.
Also page_table_alloc_pgste can fail, in that case we need to backpropagte this
as -ENOMEM to the caller of page_table_realloc.

Based on a patch by Christian Borntraeger <borntraeger@de.ibm.com>.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Dominik Dingel 2013-10-31 10:01:16 +01:00 • committed by Martin Schwidefsky

parent 1db9e0513d

commit be39f1968e

1 changed files with 13 additions and 8 deletions

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arch/s390/mm/pgtable.c

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