From: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Date: Mon, 11 Feb 2013 13:29:49 +0000 (+0100)
Subject: s390/mm: Fix crst upgrade of mmap with MAP_FIXED
X-Git-Tag: v3.9-rc1~111^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=486c0a0bc80d370471b21662bf03f04fbb37cdc6;p=pandora-kernel.git

s390/mm: Fix crst upgrade of mmap with MAP_FIXED

Right now the page table upgrade does not happen if the end address
of a fixed mapping is greater than TASK_SIZE.
Enhance s390_mmap_check() to handle MAP_FIXED mappings correctly.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

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