Btrfs: Create larger bios for btree blocks

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

1 files changed, 9 insertions, 3 deletions

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index b68e57f66a96..fcae999ab712 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2859,8 +2859,8 @@ EXPORT_SYMBOL(extent_buffer_uptodate);
 
 int read_extent_buffer_pages(struct extent_io_tree *tree,
                              struct extent_buffer *eb,
-                             u64 start,
-                             int wait)
+                             u64 start, int wait,
+                             get_extent_t *get_extent)
 {
         unsigned long i;
         unsigned long start_i;
@@ -2868,6 +2868,8 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
         int err;
         int ret = 0;
         unsigned long num_pages;
+        struct bio *bio = NULL;
+
 
         if (eb->flags & EXTENT_UPTODATE)
                 return 0;
@@ -2899,7 +2901,8 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
                         lock_page(page);
                 }
                 if (!PageUptodate(page)) {
-                        err = page->mapping->a_ops->readpage(NULL, page);
+                        err = __extent_read_full_page(tree, page,
+                                                      get_extent, &bio);
                         if (err) {
                                 ret = err;
                         }
@@ -2908,6 +2911,9 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
                 }
         }
 
+        if (bio)
+                submit_one_bio(READ, bio);
+
         if (ret || !wait) {
                 return ret;
         }