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authorNick Piggin <npiggin@suse.de>2008-04-28 02:13:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:23 -0700
commit70688e4dd1647f0ceb502bbd5964fa344c5eb411 (patch)
treee0bd8c3b4b6050c067a453d800c2e87948d1abaf /include
parent30afcb4bd2762fa4b87b17ada9500aa46dc10b1b (diff)
xip: support non-struct page backed memory
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/fs.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index bd05f5678045..2c925747bc49 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -474,8 +474,8 @@ struct address_space_operations {
int (*releasepage) (struct page *, gfp_t);
ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
loff_t offset, unsigned long nr_segs);
- struct page* (*get_xip_page)(struct address_space *, sector_t,
- int);
+ int (*get_xip_mem)(struct address_space *, pgoff_t, int,
+ void **, unsigned long *);
/* migrate the contents of a page to the specified target */
int (*migratepage) (struct address_space *,
struct page *, struct page *);