{"id":122097,"date":"2025-02-26T08:22:05","date_gmt":"2025-02-26T06:22:05","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kristof-helvig-ushyol-s-posta-mejntejnera-dma-mapping-i-configfs-posle-forsirovaniya-rust"},"modified":"2025-02-26T08:22:05","modified_gmt":"2025-02-26T06:22:05","slug":"kristof-helvig-ushyol-s-posta-mejntejnera-dma-mapping-i-configfs-posle-forsirovaniya-rust","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/kristof-helvig-ushyol-s-posta-mejntejnera-dma-mapping-i-configfs-posle-forsirovaniya-rust","title":{"rendered":"Christoph Helwig zrezygnowa\u0142 z pozycji g\u0142\u00f3wnego konserwatora DMA Mapping i ConfigFS po wymuszonej aktualizacji Rust.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u041a\u0440\u0438\u0441\u0442\u043e\u0444 \u0425\u0435\u043b\u0432\u0438\u0433 (Christoph Hellwig) \u0443\u0448\u0451\u043b \u0441 \u043f\u043e\u0437\u0438\u0446\u0438\u0438 \u043c\u044d\u0439\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c dma-mapping \u0438 configfs. \u0423\u0445\u043e\u0434 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u043b\u0441\u044f \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u043e\u0439 \u0437\u0430\u044f\u0432\u043a\u0438 \u043d\u0430 \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u0435 \u0438\u0437 \u0441\u043f\u0438\u0441\u043a\u0430 \u043c\u044d\u0439\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u043e\u0432 \u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435\u043c \u043e \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043e\u0441\u0442\u0430\u0432\u0448\u0438\u043c\u0441\u044f \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u043c. \u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 dma-mapping \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0442 \u041c\u0430\u0440\u0435\u043a \u0428\u0438\u043f\u0440\u043e\u0432\u0441\u043a\u0438 (Marek Szyprowski) \u0438\u0437 Samsung, \u0430 \u0432 configfs — \u0414\u0436\u043e\u044d\u043b \u0411\u0435\u043a\u043a\u0435\u0440 (Joel Becker) \u0438\u0437 Oracle. <\/p>\n

Christoph Hellwig wci\u0105\u017c pozostaje w gronie maintener\u00f3w podsystem\u00f3w NVM Express, vmalloc oraz FreeVXFS. W przesz\u0142o\u015bci Christoph by\u0142 cz\u0142onkiem zarz\u0105du technicznego fundacji Linux Foundation i bra\u0142 udzia\u0142 w rozwoju takich podsystem\u00f3w jak XFS, KVM<\/a>, Trace events, SCSI oraz Slab Allocator, a tak\u017ce zajmowa\u0142 si\u0119 wsparciem architektury PowerPC w j\u0105drze Linux. Ponadto Christoph by\u0142 powodem post\u0119powania s\u0105dowego przeciwko VMware w zwi\u0105zku z naruszeniem licencji GPL. <\/p>\n

Zako\u0144czenie wsparcia dla podsystem\u00f3w dma-mapping i configfs by\u0142o spowodowane o\u015bwiadczeniem Linusa Torvaldsa o zamiarze w\u0142\u0105czenia do j\u0105dra wi\u0105za\u0144 w j\u0119zyku Rust niezale\u017cnie od zgody maintener\u00f3w podsystem\u00f3w, dla kt\u00f3rych te wi\u0105zania zosta\u0142y stworzone. W styczniu Christoph stanowczo odm\u00f3wi\u0142 przyj\u0119cia wi\u0105zania Rust do funkcji zajmuj\u0105cych si\u0119 DMA, co doprowadzi\u0142o do konfliktu, w wyniku kt\u00f3rego z j\u0105dra odeszli maintenerzy podsystem\u00f3w Nouveau i ARM\/Apple. 24 lutego programi\u015bci projektu Rust for Linux zaproponowali \u0142atk\u0119 z warstw\u0105 abstrakcji dla FS configfs, kt\u00f3rej wsparciem zajmowa\u0142 si\u0119 Christoph Hellwig. Christoph nie wzi\u0105\u0142 udzia\u0142u w dyskusji na temat nowego wi\u0105zania Rust do swojego podsystemu, a kilka dni p\u00f3\u017aniej usun\u0105\u0142 si\u0119 z listy maintener\u00f3w dma-mapping i configfs. <\/p>\n

Christoph Hellwig uwa\u017ca, \u017ce u\u017cycie kilku j\u0119zyk\u00f3w programowania w tak z\u0142o\u017conych projektach jak j\u0105dro Linux jest niedopuszczalne. Wed\u0142ug Christoph'a mieszane bazy kodowe utrudniaj\u0105 prac\u0119 maintener\u00f3w, poniewa\u017c stawiaj\u0105 ich w zale\u017cno\u015bci od kodu w innym j\u0119zyku. W szczeg\u00f3lno\u015bci, w obecno\u015bci wi\u0105za\u0144 w Rust, programi\u015bci podsystem\u00f3w napisanych w C musz\u0105 uwzgl\u0119dnia\u0107 wp\u0142yw zmian na ci\u0105g\u0142o\u015b\u0107 dzia\u0142ania wi\u0105za\u0144. Jakiekolwiek zmiany w strukturach danych lub funkcjach wewn\u0119trznych w C mog\u0105 prowadzi\u0107 do konieczno\u015bci zmiany kodu wi\u0105za\u0144, dlatego zmiany w kodzie C, kt\u00f3re maj\u0105 wp\u0142yw na wi\u0105zania, trzeba \u015bledzi\u0107 i synchronizowa\u0107 z kodem w Rust. <\/p>\n

W procesie rozwoju j\u0105dra by\u0142y ju\u017c przypadki odrzucenia pull requesta z zmianami w podsystemie zarz\u0105dzania pami\u0119ci\u0105, poniewa\u017c ta zmiana powodowa\u0142a awari\u0119 podczas pr\u00f3by zbudowania j\u0105dra z w\u0142\u0105czeniem wsparcia dla Rust. Awarie wyst\u0105pi\u0142y z powodu desynchronizacji z kodem generuj\u0105cym wi\u0105zania Rust (bindgen) i doprowadzi\u0142y do tego, \u017ce osoby zajmuj\u0105ce si\u0119 podsystemem zarz\u0105dzania pami\u0119ci\u0105, wprowadzaj\u0105c zmiany, kt\u00f3re by\u0142y ca\u0142kowicie poprawne z punktu widzenia kodu w C i j\u0105dra w og\u00f3le, sta\u0142y si\u0119 zale\u017cne od opcjonalnego kodu zewn\u0119trznego w j\u0105drze, za kt\u00f3ry odpowiadaj\u0105 inni ludzie. <\/p>\n

Linus Torvalds uwa\u017ca, \u017ce Christoph Hellwig nie ma uprawnie\u0144 do blokowania przyjmowania wi\u0105za\u0144 Rust do j\u0105dra dla podsystemu DMA, poniewa\u017c kod tych wi\u0105za\u0144 nie dotyczy kodu podsystemu mapowania DMA i jest zrealizowany w osobnym podkatalogu, kt\u00f3rego wsparciem zajmuje si\u0119 inny maintainer. Linus por\u00f3wna\u0142 dzia\u0142ania Christopha do pr\u00f3by kontrolowania obszaru wykorzystania podsystemu DMA, podczas gdy maintainerzy odpowiadaj\u0105 jedynie za kod swojej podsystemy, a nie za to, jak i przez kogo u\u017cywany jest wynik pracy tego kodu. Na przyk\u0142ad zmiana w kodzie podstawowych podsystem\u00f3w mo\u017ce prowadzi\u0107 do problem\u00f3w z dzia\u0142aniem jakiego\u015b sterownika, ale to nie jest pow\u00f3d, aby ingerowa\u0107 w przyjmowanie nowych sterownik\u00f3w.
\n
\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u043c. \u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 dma-mapping \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0442 \u041c\u0430\u0440\u0435\u043a \u0428\u0438\u043f\u0440\u043e\u0432\u0441\u043a\u0438 (Marek Szyprowski) \u0438\u0437 Samsung, \u0430 \u0432 configfs — \u0414\u0436\u043e\u044d\u043b \u0411\u0435\u043a\u043a\u0435\u0440 (Joel Becker) \u0438\u0437 Oracle. \u041a\u0440\u0438\u0441\u0442\u043e\u0444 \u0425\u0435\u043b\u0432\u0438\u0433 \u043f\u043e\u043a\u0430 \u043e\u0441\u0442\u0430\u0451\u0442\u0441\u044f \u0432 \u0447\u0438\u0441\u043b\u0435 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-122097","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Christoph Hellwig zrezygnowa\u0142 z pe\u0142nienia roli maintenera DMA Mapping i ConfigFS po forowaniu Rust | ProHoster","description":"Christoph Hellwig zrezygnowa\u0142 z pozycji maintenera podsystemu dma-mapping oraz 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