From: Martin Schwidefsky Date: Thu, 24 Jul 2014 09:03:41 +0000 (+0200) Subject: s390/mm: implement dirty bits for large segment table entries X-Git-Tag: omap-for-v3.17/fixes-against-rc2~136^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=152125b7a882df36a55a8eadbea6d0edf1461ee7;p=pandora-kernel.git s390/mm: implement dirty bits for large segment table entries The large segment table entry format has block of bits for the ACC/F values for the large page. These bits are valid only if another bit (AV bit 0x10000) of the segment table entry is set. The ACC/F bits do not have a meaning if the AV bit is off. This allows to put the THP splitting bit, the segment young bit and the new segment dirty bit into the ACC/F bits as long as the AV bit stays off. The dirty and young information is only available if the pmd is large. Signed-off-by: Martin Schwidefsky --- Reading git-diff-tree failed