{"id":53168,"date":"2019-12-06T00:00:00","date_gmt":"2019-12-05T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/reliz-yadra-linux-5-4"},"modified":"2020-02-18T14:01:33","modified_gmt":"2020-02-18T11:01:33","slug":"reliz-yadra-linux-5-4-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/reliz-yadra-linux-5-4-2","title":{"rendered":"Uvoln\u011bn\u00ed j\u00e1dra Linux 5.4","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><strong>Nejv\u00fdznamn\u011bj\u0161\u00ed zm\u011bny:<\/strong><\/p>\n<ul>\n<noindex><\/p>\n<li>Modul lockdown, kter\u00fd omezuje p\u0159\u00edstup u\u017eivatele root k soubor\u016fm a rozhran\u00edm j\u00e1dra. <a rel=\"nofollow\" href=\"https:\/\/lwn.net\/Articles\/791863\/\">Podrobnosti.<\/a><\/li>\n<p><\/noindex><\/p>\n<li>Souborov\u00fd syst\u00e9m virtiofs pro p\u0159ed\u00e1n\u00ed vybran\u00fdch slo\u017eek hostitele do virtu\u00e1ln\u00edch syst\u00e9m\u016f. Komunikace prob\u00edh\u00e1 podle sch\u00e9matu \u201eklient-server\u201c p\u0159es FUSE. <a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/doc\/html\/latest\/filesystems\/virtiofs.html\">Podrobnosti.<\/a><\/li>\n<li>Mechanismus kontroly integrity soubor\u016f fs-verity. Podobn\u00fd dm-verity, ale funguje na \u00farovni souborov\u00fdch syst\u00e9m\u016f Ext4 a F2FS, nikoli blokov\u00fdch za\u0159\u00edzen\u00ed. <a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/doc\/html\/latest\/filesystems\/fsverity.html\">Podrobnosti.<\/a><\/li>\n<li>Modul dm-clone pro kop\u00edrov\u00e1n\u00ed blokov\u00fdch za\u0159\u00edzen\u00ed, kter\u00e1 jsou dostupn\u00e1 pouze pro \u010dten\u00ed, p\u0159i\u010dem\u017e na kopii lze zapisovat data p\u0159\u00edmo v pr\u016fb\u011bhu klonov\u00e1n\u00ed. <a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/doc\/html\/latest\/admin-guide\/device-mapper\/dm-clone.html\">Podrobnosti.<\/a><\/li>\n<li>Podpora grafick\u00fdch procesor\u016f AMD Navi 12\/14 a APU rodin Arcturus a Renoir. Tak\u00e9 byla zah\u00e1jena pr\u00e1ce na podpo\u0159e budouc\u00ed grafiky Intel Tiger Lake.<\/li>\n<li>P\u0159\u00edznaky MADV_COLD a MADV_PAGEOUT pro syst\u00e9mov\u00fd vol\u00e1n\u00ed madvise(). Umo\u017e\u0148uj\u00ed ur\u010dit, kter\u00e1 data v pam\u011bti nejsou kritick\u00e1 pro funkci procesu nebo nebudou dlouho pot\u0159ebn\u00e1, aby mohla b\u00fdt tato data vy\u0159azena do swapu a uvolnila tak pam\u011b\u0165.<\/li>\n<li>Ze sekce Staging byla p\u0159esunuta souborov\u00fd syst\u00e9m EROFS - velmi lehk\u00fd a rychl\u00fd FS pro \u010dten\u00ed, v\u00fdhodn\u00fd pro ukl\u00e1d\u00e1n\u00ed firmwaru a livecd. <a rel=\"nofollow\" href=\"https:\/\/lwn.net\/Articles\/796687\/\">Podrobnosti.<\/a><\/li>\n<li>Do sekce Staging byl p\u0159id\u00e1n ovlada\u010d souborov\u00e9ho syst\u00e9mu exFAT, vyvinut\u00fd spole\u010dnost\u00ed Samsung.<\/li>\n<li>Mechanismus haltpoll pro zv\u00fd\u0161en\u00ed v\u00fdkonu hostitelsk\u00fdch syst\u00e9m\u016f. Umo\u017e\u0148uje host\u016fm z\u00edskat dodate\u010dn\u00fd procesorov\u00fd \u010das p\u0159ed n\u00e1vratem CPU hypervizorovi. <a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/plain\/Documentation\/virtual\/guest-halt-polling.txt?id=2cffe9f6b96fece065ee8522673c90e92ef2085d\">Podrobnosti.<\/a><\/li>\n<li>Kontroler blk-iocost pro rozd\u011blov\u00e1n\u00ed vstup\u016f a v\u00fdstup\u016f mezi cgroup. Nov\u00fd kontroler se zam\u011b\u0159uje na n\u00e1ro\u010dnost budouc\u00ed operace I\/O. <a rel=\"nofollow\" href=\"https:\/\/lwn.net\/Articles\/792256\/\">Podrobnosti.<\/a><\/li>\n<li>Jmenn\u00e9 prostory pro symboly modul\u016f j\u00e1dra. <a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/doc\/html\/latest\/core-api\/symbol-namespaces.html\">Podrobnosti.<\/a><\/li>\n<li>Pokra\u010duje pr\u00e1ce na integraci patch\u016f re\u00e1ln\u00e9ho \u010dasu do j\u00e1dra.<\/li>\n<li>Vylep\u0161en mechanismus io_uring.<\/li>\n<li>Zrychlena pr\u00e1ce s velk\u00fdmi slo\u017ekami na XFS.<\/li>\n<li>Des\u00edtky dal\u0161\u00edch zm\u011bn.<\/li>\n<\/ul>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"http:\/\/www.linux.org.ru\/news\/kernel\/15371555\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0437\u0430\u043c\u0435\u0442\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u041c\u043e\u0434\u0443\u043b\u044c lockdown, \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f root \u043a \u0444\u0430\u0439\u043b\u0430\u043c \u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430\u043c \u044f\u0434\u0440\u0430. \u041f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0441\u0442\u0438. \u0424\u0430\u0439\u043b\u043e\u0432\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 virtiofs \u0434\u043b\u044f \u043f\u0440\u043e\u0431\u0440\u043e\u0441\u0430 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u043e\u0432 \u0445\u043e\u0441\u0442\u0430 \u0432 \u0433\u043e\u0441\u0442\u0435\u0432\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b. \u0412\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u0438\u0434\u0451\u0442 \u043f\u043e \u0441\u0445\u0435\u043c\u0435 &laquo;\u043a\u043b\u0438\u0435\u043d\u0442-\u0441\u0435\u0440\u0432\u0435\u0440&raquo; \u0447\u0435\u0440\u0435\u0437 FUSE. \u041f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0441\u0442\u0438. \u041c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044f \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 \u0444\u0430\u0439\u043b\u043e\u0432 fs-verity. \u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u0435\u043d dm-verity, \u043d\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u0444\u0430\u0439\u043b\u043e\u0432\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c Ext4 \u0438 F2FS, \u0430 \u043d\u0435 \u0431\u043b\u043e\u0447\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432. \u041f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0441\u0442\u0438. [&hellip;]<\/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-53168","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0437\u0430\u043c\u0435\u0442\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u041c\u043e\u0434\u0443\u043b\u044c lockdown, \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f root \u043a \u0444\u0430\u0439\u043b\u0430\u043c \u0438 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