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Groups > linux.kernel > #1348670
| From | Xishi Qiu <qiuxishi@huawei.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: a question about slub in function __slab_free() |
| Date | 2016-03-03 02:40 +0100 |
| Message-ID | <r8qpb-89F-1@gated-at.bofh.it> (permalink) |
| References | <r8eel-7A8-5@gated-at.bofh.it> <r8g6u-uK-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 2016/3/2 22:38, Joonsoo Kim wrote: > 2016-03-02 21:26 GMT+09:00 Xishi Qiu <qiuxishi@huawei.com>: >> ___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! >
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a question about slub in function __slab_free() Xishi Qiu <qiuxishi@huawei.com> - 2016-03-02 13:40 +0100
Re: a question about slub in function __slab_free() Joonsoo Kim <js1304@gmail.com> - 2016-03-02 15:40 +0100
Re: a question about slub in function __slab_free() Xishi Qiu <qiuxishi@huawei.com> - 2016-03-03 02:40 +0100
Re: a question about slub in function __slab_free() Jianyu Zhan <nasa4836@gmail.com> - 2016-03-02 16:20 +0100
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