Btrfs: Add writepages support

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0c65141b9993..25f32d7c7ee8 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1747,6 +1747,15 @@ static int btrfs_writepage(struct page *page, struct writeback_control *wbc)
         return extent_write_full_page(tree, page, btrfs_get_extent, wbc);
 }
 
+
+static int btrfs_writepages(struct address_space *mapping,
+                            struct writeback_control *wbc)
+{
+        struct extent_map_tree *tree;
+        tree = &BTRFS_I(mapping->host)->extent_tree;
+        return extent_writepages(tree, mapping, btrfs_get_extent, wbc);
+}
+
 static int btrfs_releasepage(struct page *page, gfp_t unused_gfp_flags)
 {
         struct extent_map_tree *tree;
@@ -2526,6 +2535,7 @@ static struct extent_map_ops btrfs_extent_map_ops = {
 static struct address_space_operations btrfs_aops = {
         .readpage       = btrfs_readpage,
         .writepage      = btrfs_writepage,
+        .writepages     = btrfs_writepages,
         .sync_page      = block_sync_page,
         .prepare_write  = btrfs_prepare_write,
         .commit_write   = btrfs_commit_write,