Btrfs: kill the start argument to read_extent_buffer_pages

Nobody uses this, it makes no sense to do partial reads of extent buffers.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 6 insertions, 7 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index f92bfa8ffd41..e4c2428cee85 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -442,7 +442,7 @@ static int btrfs_check_super_csum(char *raw_disk_sb)
  */
 static int btree_read_extent_buffer_pages(struct btrfs_root *root,
                                           struct extent_buffer *eb,
-                                          u64 start, u64 parent_transid)
+                                          u64 parent_transid)
 {
         struct extent_io_tree *io_tree;
         int failed = 0;
@@ -454,8 +454,7 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root,
         clear_bit(EXTENT_BUFFER_CORRUPT, &eb->bflags);
         io_tree = &BTRFS_I(root->fs_info->btree_inode)->io_tree;
         while (1) {
-                ret = read_extent_buffer_pages(io_tree, eb, start,
-                                               WAIT_COMPLETE,
+                ret = read_extent_buffer_pages(io_tree, eb, WAIT_COMPLETE,
                                                btree_get_extent, mirror_num);
                 if (!ret) {
                         if (!verify_parent_transid(io_tree, eb,
@@ -1132,7 +1131,7 @@ void readahead_tree_block(struct btrfs_root *root, u64 bytenr)
         if (IS_ERR(buf))
                 return;
         read_extent_buffer_pages(&BTRFS_I(btree_inode)->io_tree,
-                                 buf, 0, WAIT_NONE, btree_get_extent, 0);
+                                 buf, WAIT_NONE, btree_get_extent, 0);
         free_extent_buffer(buf);
 }
 
@@ -1150,7 +1149,7 @@ int reada_tree_block_flagged(struct btrfs_root *root, u64 bytenr,
 
         set_bit(EXTENT_BUFFER_READAHEAD, &buf->bflags);
 
-        ret = read_extent_buffer_pages(io_tree, buf, 0, WAIT_PAGE_LOCK,
+        ret = read_extent_buffer_pages(io_tree, buf, WAIT_PAGE_LOCK,
                                        btree_get_extent, mirror_num);
         if (ret) {
                 free_extent_buffer(buf);
@@ -1206,7 +1205,7 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
         if (IS_ERR(buf))
                 return buf;
 
-        ret = btree_read_extent_buffer_pages(root, buf, 0, parent_transid);
+        ret = btree_read_extent_buffer_pages(root, buf, parent_transid);
         if (ret) {
                 free_extent_buffer(buf);
                 return ERR_PTR(ret);
@@ -4081,7 +4080,7 @@ void btrfs_btree_balance_dirty_nodelay(struct btrfs_root *root)
 int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid)
 {
         struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
-        return btree_read_extent_buffer_pages(root, buf, 0, parent_transid);
+        return btree_read_extent_buffer_pages(root, buf, parent_transid);
 }
 
 static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info,