On 3/17/20 4:10 AM, Qu Wenruo wrote:
find_reloc_root() searches reloc_control::reloc_root_tree to find the reloc root. This behavior is only useful for relocation backref cache. For the incoming more generic purposed backref cache, we don't care about who owns the reloc root, but only care if it's a reloc root. So this patch makes the following modifications to make the reloc root search more specific to relocation backref: - Add backref_node::is_reloc_root This will be an extra indicator for generic purposed backref cache. User doesn't need to read root key from backref_node::root to determine if it's a reloc root. Also for reloc tree root, it's useless and will be queued to useless list. - Add backref_cache::is_reloc This will allow backref cache code to do different behavior for generic purposed backref cache and relocation backref cache. - Make find_reloc_root() to accept fs_info Just a personal taste. - Export find_reloc_root() So backref.c can utilize this function. Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx> Thanks, Josef
