s390: implement pte special bit
authorNick Piggin <npiggin@suse.de>
Mon, 28 Apr 2008 09:13:03 +0000 (02:13 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 28 Apr 2008 15:58:23 +0000 (08:58 -0700)
commita08cb629f546d1cecebe955392197f226e58dbe1
tree1cbab3071f6d35a0f58abc0ad3b05641ed41df6b
parent70688e4dd1647f0ceb502bbd5964fa344c5eb411
s390: implement pte special bit

Convert XIP to support non-struct page backed memory, using VM_MIXEDMAP for
the user mappings.

This requires the get_xip_page API to be changed to an address based one.
Improve the API layering a little bit too, while we're here.

This is required in order to support XIP filesystems on memory that isn't
backed with struct page (but memory with struct page is still supported too).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Carsten Otte <cotte@de.ibm.com>
Cc: Jared Hulbert <jaredeh@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/asm-s390/pgtable.h