On Wed, Jun 21, 2017 at 12:20 PM, Miklos Szeredi <miklos@xxxxxxxxxx> wrote: > On Wed, Jun 21, 2017 at 11:05 AM, Amir Goldstein <amir73il@xxxxxxxxx> wrote: >> >> Following up on your idea: >> - check in ovl_iterate() if version has changed and if dir became impure >> - if it did, populate od->cache, but keep the dir od->is_real >> - iterate upper cache entries and call ovl_cache_update_ino() >> - Then actor of real dir iterator can use the cache to ommit entries or use >> p->ino from cache if p->real_ino match real d_ino, but differs from p->ino. > > For non-merge dirs we can have a simplified cache just containing the > entries with origin, recreated when the version changes or updated in > rename, whichever is simpler. A non-merge dir will never become a > merge one, so we can keep the handling separate. > And use this cache to ommit/fix entries with actor? Just thought of another issue related to pseudo lower st_dev we need the underlying iter actor also for replacing real st_dev with pseudo st_dev. Also, just realized that with inodes index, the upper non-dir inodes with nlink == 1 are not origin suspects. Can that help us somehow? -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
