btrfs: return void from readahead_tree_block

Errors in readahead are not fatal and ignored elsewhere in the code.

Signed-off-by: David Sterba <dsterba@suse.cz>

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index ff83748..332f635 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1062,19 +1062,17 @@ static const struct address_space_operations btree_aops = {
        .set_page_dirty = btree_set_page_dirty,
 };
 
-int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize)
+void readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize)
 {
        struct extent_buffer *buf = NULL;
        struct inode *btree_inode = root->fs_info->btree_inode;
-       int ret = 0;
 
        buf = btrfs_find_create_tree_block(root, bytenr, blocksize);
        if (!buf)
-               return 0;
+               return;
        read_extent_buffer_pages(&BTRFS_I(btree_inode)->io_tree,
                                 buf, 0, WAIT_NONE, btree_get_extent, 0);
        free_extent_buffer(buf);
-       return ret;
 }
 
 int reada_tree_block_flagged(struct btrfs_root *root, u64 bytenr, u32 blocksize,

diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 8cd6a53..0d9793f 100644 (file)
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -46,7 +46,7 @@ struct btrfs_fs_devices;
 
 struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
                                      u32 blocksize, u64 parent_transid);
-int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize);
+void readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize);
 int reada_tree_block_flagged(struct btrfs_root *root, u64 bytenr, u32 blocksize,
                         int mirror_num, struct extent_buffer **eb);
 struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 058abd0..e0468a9 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7486,9 +7486,7 @@ static noinline void reada_walk_down(struct btrfs_trans_handle *trans,
                                continue;
                }
 reada:
-               ret = readahead_tree_block(root, bytenr, blocksize);
-               if (ret)
-                       break;
+               readahead_tree_block(root, bytenr, blocksize);
                nread++;
        }
        wc->reada_slot = slot;