cleancache_filekey 27 include/linux/cleancache.h int (*get_page)(int, struct cleancache_filekey, cleancache_filekey 29 include/linux/cleancache.h void (*put_page)(int, struct cleancache_filekey, cleancache_filekey 31 include/linux/cleancache.h void (*invalidate_page)(int, struct cleancache_filekey, pgoff_t); cleancache_filekey 32 include/linux/cleancache.h void (*invalidate_inode)(int, struct cleancache_filekey);