diff options
| author | Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2005-09-21 20:55:38 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-21 21:11:55 +0400 |
| commit | 7e871b6c8f1f4fda41e51ef86147facecac3be9f (patch) | |
| tree | d03c9af90786ea7fa8f5e77ce1e71437ab7de4df /include | |
| parent | f875a1a6650edce859bd21051a22e1c27ac7ea63 (diff) | |
| download | linux-7e871b6c8f1f4fda41e51ef86147facecac3be9f.tar.xz | |
[PATCH] mm: update stale comment for removal of page->list
Update comment for the 2.6.6-rc1 conversion from page->list and
address_space->{clean,dirty,locked}_pages to radix tree tagging and ->lru.
I've mostly avoided to mention page lists (at least I've shortened the
comment).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 82d7024f0765..0d94c94d9d81 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -350,7 +350,8 @@ static inline void put_page(struct page *page) * only one copy in memory, at most, normally. * * For the non-reserved pages, page_count(page) denotes a reference count. - * page_count() == 0 means the page is free. + * page_count() == 0 means the page is free. page->lru is then used for + * freelist management in the buddy allocator. * page_count() == 1 means the page is used for exactly one purpose * (e.g. a private data page of one process). * @@ -376,10 +377,8 @@ static inline void put_page(struct page *page) * attaches, plus 1 if `private' contains something, plus one for * the page cache itself. * - * All pages belonging to an inode are in these doubly linked lists: - * mapping->clean_pages, mapping->dirty_pages and mapping->locked_pages; - * using the page->list list_head. These fields are also used for - * freelist managemet (when page_count()==0). + * Instead of keeping dirty/clean pages in per address-space lists, we instead + * now tag pages as dirty/under writeback in the radix tree. * * There is also a per-mapping radix tree mapping index to the page * in memory if present. The tree is rooted at mapping->root. |