On 2020/3/4 上午5:22, Josef Bacik wrote: > On 3/3/20 2:13 AM, Qu Wenruo wrote: >> The patchset is based on previous backref_cache_refactor branch, which >> is further based on misc-next. >> >> The whole series can be fetched from github: >> https://github.com/adam900710/linux/tree/backref_cache_code_move >> >> All the patches in previous branch is not touched at all, thus they are >> not re-sent in this patchset. >> >> >> Currently there are 3 major parts of build_backref_tree(): >> - ITERATION >> This will do a breadth-first search, starts from the target bytenr, >> and queue all parents into the backref cache. >> The result is a temporary map, which is only single-directional, and >> involved new backref nodes are not yet inserted into the cache. >> >> - WEAVING >> Finish the map to make it bi-directional, and insert new nodes into >> the cache. >> >> - CLEANUP >> Cleanup the useless nodes, either remove it completely or add them >> into the cache as detached. >> > > I've found a bunch of bugs in the backref code while fixing Zygo's > problem, you are probably going to want to wait for my patches to go in > before you start moving things around, because it's going to conflict a > bunch. Thanks, No problem, it's expected to have some comments even for previous patchset. So rebasing is expected. Thanks, Qu > > Josef
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