If any loadable module uses the page_mapping() inline, we would need to
export swapper_space (again: it was exported once, but janitorially
unexported); but a filesystem sees only its own pages, so reiserfs can
use page->mapping directly without needing the page_mapping() inline.
Signed-off-by: Hugh Dickins <[email protected]>
--- 2.6.23-rc6-lbs/fs/reiserfs/stree.c 2007-09-11 20:01:08.000000000 +0100
+++ linux/fs/reiserfs/stree.c 2007-09-13 20:04:04.000000000 +0100
@@ -1440,7 +1440,7 @@ static void unmap_buffers(struct page *p
if (page) {
if (page_has_buffers(page)) {
- tail_index = page_cache_offset(page_mapping(page), pos);
+ tail_index = page_cache_offset(page->mapping, pos);
cur_index = 0;
head = page_buffers(page);
bh = head;
@@ -1461,7 +1461,7 @@ static void unmap_buffers(struct page *p
} while (bh != head);
if (PAGE_SIZE == bh->b_size) {
cancel_dirty_page(page,
- page_cache_size(page_mapping(page)));
+ page_cache_size(page->mapping));
}
}
}
-
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