Btrfs: factor page private preparations into a helper
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 88b3ef2..0df325f 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -652,12 +652,7 @@
u64 page_start = page->index << PAGE_CACHE_SHIFT;
u64 page_end = page_start + PAGE_CACHE_SIZE - 1;
- if (!PagePrivate(page)) {
- SetPagePrivate(page);
- set_page_private(page, 1);
- WARN_ON(!page->mapping->a_ops->invalidatepage);
- page_cache_get(page);
- }
+ set_page_extent_mapped(page);
lock_extent(em_tree, page_start, page_end, GFP_NOFS);
set_extent_delalloc(&BTRFS_I(inode)->extent_tree, page_start,