btrfs: introduce btrfs_is_data_reloc_root
There are several places in our codebase where we check if a root is the
root of the data reloc tree and subsequent patches will introduce more.
Factor out the check into a small helper function instead of open coding
it multiple times.
Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index bfba85d..f6e6240 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3846,6 +3846,11 @@ static inline bool btrfs_is_zoned(const struct btrfs_fs_info *fs_info)
return fs_info->zoned != 0;
}
+static inline bool btrfs_is_data_reloc_root(const struct btrfs_root *root)
+{
+ return root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID;
+}
+
/*
* We use page status Private2 to indicate there is an ordered extent with
* unfinished IO.