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authorLee Schermerhorn <Lee.Schermerhorn@hp.com>2009-12-15 01:58:49 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 16:53:16 (GMT)
commitd4906e1aa516cc965292b43b5a26122dd4344e7e (patch)
tree78c19149282e93200d90f380a40f1e1192354936 /mm/page_io.c
parent7509765a29cfb1a4c506c09b304aaf3b4111c653 (diff)
swap: rework map_swap_page() again
Seems that page_io.c doesn't really need to know that page_private(page) is the swp_entry 'val'. Rework map_swap_page() to do what its name says and map a page to a page offset in the swap space. The only other caller of map_swap_page() is internal to mm/swapfile.c and it does want to map a swap entry to the 'sector'. So rename map_swap_page() to map_swap_entry(), make it 'static' and and implement map_swap_page() as a wrapper around that. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_io.c')
-rw-r--r--mm/page_io.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/mm/page_io.c b/mm/page_io.c
index afeed89..a19af95 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -26,9 +26,7 @@ static struct bio *get_swap_bio(gfp_t gfp_flags,
bio = bio_alloc(gfp_flags, 1);
if (bio) {
- swp_entry_t entry;
- entry.val = page_private(page);
- bio->bi_sector = map_swap_page(entry, &bio->bi_bdev);
+ bio->bi_sector = map_swap_page(page, &bio->bi_bdev);
bio->bi_sector <<= PAGE_SHIFT - 9;
bio->bi_io_vec[0].bv_page = page;
bio->bi_io_vec[0].bv_len = PAGE_SIZE;

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