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authorChris Mason <chris.mason@oracle.com>2009-04-27 07:29:04 -0400
committerChris Mason <chris.mason@oracle.com>2009-04-27 07:40:52 -0400
commitb7967db75a38df4891b22efe1b0969b9357eb946 (patch)
tree63ce1e5394446d65111fbc768e44845c295c1049 /fs/btrfs/extent_io.c
parentd6397baee468809ef311e763dfc6e9f73418f8a6 (diff)
Btrfs: remove #if 0 code
Btrfs had some old code sitting around under #if 0, this drops it. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
-rw-r--r--fs/btrfs/extent_io.c63
1 files changed, 0 insertions, 63 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index c33b54029d7..fe9eb990e44 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1401,69 +1401,6 @@ out:
return total_bytes;
}
-#if 0
-/*
- * helper function to lock both pages and extents in the tree.
- * pages must be locked first.
- */
-static int lock_range(struct extent_io_tree *tree, u64 start, u64 end)
-{
- unsigned long index = start >> PAGE_CACHE_SHIFT;
- unsigned long end_index = end >> PAGE_CACHE_SHIFT;
- struct page *page;
- int err;
-
- while (index <= end_index) {
- page = grab_cache_page(tree->mapping, index);
- if (!page) {
- err = -ENOMEM;
- goto failed;
- }
- if (IS_ERR(page)) {
- err = PTR_ERR(page);
- goto failed;
- }
- index++;
- }
- lock_extent(tree, start, end, GFP_NOFS);
- return 0;
-
-failed:
- /*
- * we failed above in getting the page at 'index', so we undo here
- * up to but not including the page at 'index'
- */
- end_index = index;
- index = start >> PAGE_CACHE_SHIFT;
- while (index < end_index) {
- page = find_get_page(tree->mapping, index);
- unlock_page(page);
- page_cache_release(page);
- index++;
- }
- return err;
-}
-
-/*
- * helper function to unlock both pages and extents in the tree.
- */
-static int unlock_range(struct extent_io_tree *tree, u64 start, u64 end)
-{
- unsigned long index = start >> PAGE_CACHE_SHIFT;
- unsigned long end_index = end >> PAGE_CACHE_SHIFT;
- struct page *page;
-
- while (index <= end_index) {
- page = find_get_page(tree->mapping, index);
- unlock_page(page);
- page_cache_release(page);
- index++;
- }
- unlock_extent(tree, start, end, GFP_NOFS);
- return 0;
-}
-#endif
-
/*
* set the private field for a given byte offset in the tree. If there isn't
* an extent_state there already, this does nothing.