On 2016/3/2 22:38, Joonsoo Kim wrote: > 2016-03-02 21:26 GMT+09:00 Xishi Qiu <[email protected]>: >> ___slab_alloc() >> deactivate_slab() >> add_full(s, n, page); >> The page will be added to full list and the frozen is 0, right? >> >> __slab_free() >> prior = page->freelist; // prior is NULL >> was_frozen = new.frozen; // was_frozen is 0 >> ... >> /* >> * Slab was on no list before and will be >> * partially empty >> * We can defer the list move and instead >> * freeze it. >> */ >> new.frozen = 1; >> ... >> >> I don't understand why "Slab was on no list before"? > > add_full() is defined only for CONFIG_SLUB_DEBUG. > And, actual add happens if slub_debug=u is enabled. > In other cases, fully used slab isn't attached on any list. > > Thanks. >
Hi Joonsoo, You are right, thank you very much! >
