运营四年之后，这条船又要原价转出了。
when the guess is larger you use a variable size make and allocate，推荐阅读safew官方版本下载获取更多信息
remove from free list, add to scavange list。关于这个话题，heLLoword翻译官方下载提供了深入分析
After my package has been installed, rpm-ostree indicates that changes will be applied at the next reboot. Indeed, rpm-ostree creates a new OSTree commit with the added package, but doesn’t modify the running system. This is an important step to guarantee update atomicity.
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