sysv: convert to new aops

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index 5b4fedf..64c03bd 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -136,6 +136,9 @@
 
 /* itree.c */
 extern void sysv_truncate(struct inode *);
+extern int __sysv_write_begin(struct file *file, struct address_space *mapping,
+			loff_t pos, unsigned len, unsigned flags,
+			struct page **pagep, void **fsdata);
 
 /* inode.c */
 extern int sysv_write_inode(struct inode *, int);