From 43eb5f2975848743e5b14c5bef20f40d404a7a04 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Fri, 1 Mar 2019 10:47:59 +0800 Subject: btrfs: Introduce extent_io_tree::owner to distinguish different io_trees Btrfs has the following different extent_io_trees used: - fs_info::free_extents[2] - btrfs_inode::io_tree - for both normal inodes and the btree inode - btrfs_inode::io_failure_tree - btrfs_transaction::dirty_pages - btrfs_root::dirty_log_pages If we want to trace changes in those trees, it will be pretty hard to distinguish them. Instead of using hard-to-read pointer address, this patch will introduce a new member extent_io_tree::owner to track the owner. This modification needs all the callers of extent_io_tree_init() to accept a new parameter @owner. This patch provides the basis for later trace events. Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/relocation.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/btrfs/relocation.c') diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 955da7baa665..b52fb99646dc 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -4234,7 +4234,8 @@ static struct reloc_control *alloc_reloc_control(struct btrfs_fs_info *fs_info) INIT_LIST_HEAD(&rc->dirty_subvol_roots); backref_cache_init(&rc->backref_cache); mapping_tree_init(&rc->reloc_root_tree); - extent_io_tree_init(fs_info, &rc->processed_blocks, NULL); + extent_io_tree_init(fs_info, &rc->processed_blocks, + IO_TREE_RELOC_BLOCKS, NULL); return rc; } -- cgit v1.2.3