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Btrfs: replace tree->mapping with tree->private_data

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For extent_io tree's we have carried the address_mapping of the inode
around in the io tree in order to pull the inode back out for calling
into various tree ops hooks.  This works fine when everything that has
an extent_io_tree has an inode.  But we are going to remove the
btree_inode, so we need to change this.  Instead just have a generic
void * for private data that we can initialize with, and have all the
tree ops use that instead.  This had a lot of cascading changes but
should be relatively straightforward.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ minor reordering of the callback prototypes ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik
2017-05-05 11:57:13 -04:00
committed by David Sterba
parent 2723480a0f
commit c6100a4b4e
9 changed files with 128 additions and 91 deletions
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3
fs/btrfs/relocation.c
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@@ -4269,8 +4269,7 @@ static struct reloc_control *alloc_reloc_control(struct btrfs_fs_info *fs_info)
INIT_LIST_HEAD(&rc->reloc_roots);
backref_cache_init(&rc->backref_cache);
mapping_tree_init(&rc->reloc_root_tree);
extent_io_tree_init(&rc->processed_blocks,
fs_info->btree_inode->i_mapping);
extent_io_tree_init(&rc->processed_blocks, NULL);
return rc;
}