Hi, this patch set adds following functions - page_inode(page) ... returns inode from page, (page->mapping->host) - page_mapping_cache(page) ... returns addrees_space from page - page_mapping_anon(page) ... return anon_vma from page - page_is_pagecache(page) ... returns 1 if the page is page cache - pagecache_consistent(page, mapping) ... returns if page_mapping_cache(page) equals to mapping.
By adding aboves, this patch set removes all *direct* references to page->mapping in usual codes. (compile tested with all mod config.) I think this can improve VM/FS dependency and make things robust. In addition, page->mapping is not a just address_space, now. (And we can hide page->mapping details from moduled FSs.) patch set is structured as [1] ... new interface definition [2] ... changes in /mm [3] ... changes in /kernel and /fs [4...] ... changes in each FSs. (most of patches are very small.) Any comments are welcome. Thanks, -Kame - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
