{"id":55473,"date":"2020-01-21T00:00:00","date_gmt":"2020-01-20T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/samsung-predlozhil-novyj-variant-drajvera-exfat-dlya-yadra-linux"},"modified":"2020-02-18T14:03:35","modified_gmt":"2020-02-18T11:03:35","slug":"samsung-predlozhil-novyj-variant-drajvera-exfat-dlya-yadra-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/samsung-predlozhil-novyj-variant-drajvera-exfat-dlya-yadra-linux","title":{"rendered":"Samsung ha proposto una nuova versione del driver exFAT per il kernel Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Azienda Samsung <noindex><a rel=\"nofollow\" href=\"https:\/\/lkml.org\/lkml\/2020\/1\/18\/114\">ha proposto<\/a><\/noindex>  per l'inclusione nel kernel Linux di un insieme di patch per la realizzazione di un nuovo driver exFAT, basato sull'attuale codice sorgente &#171;sdfat&#187;, sviluppato per i firmware degli smartphone Samsung. Se le patch verranno accettate, entreranno a far parte del kernel Linux 5.6, la cui uscita \u00e8 prevista tra 2-3 mesi. Rispetto al driver exFAT precedentemente aggiunto al kernel, il nuovo driver garantisce un aumento delle prestazioni di circa il 10%.<\/p>\n<p>Le principali differenze della revisione del driver sdfat per il kernel Linux principale rispetto al driver utilizzato da Samsung in Android:<\/p>\n<ul>\n<li class=\"l\"> \u00c8 stato rimosso il codice per l'implementazione del file system VFAT, poich\u00e9 questo file system \u00e8 gi\u00e0 supportato separatamente nel kernel (fs\/fat);\n<li class=\"l\"> Il driver \u00e8 stato rinominato da sdfat a exfat;\n<li class=\"l\"> \u00c8 stata effettuata una refattorizzazione del codice. I testi sorgente sono stati adeguati ai requisiti di formattazione del codice per il kernel Linux;\n<li class=\"l\"> \u00c8 stata eseguita un'ottimizzazione delle operazioni con i metadati, come la creazione di file, la ricerca di elementi del file system (lookup) e la determinazione del contenuto delle directory (readdir).\n<li class=\"l\"> Sono stati corretti gli errori identificati durante i test aggiuntivi.\n<\/ul>\n<p>Ricordiamo che dopo che l'azienda Microsoft <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51374\">ha pubblicato<\/a><\/noindex> specifiche pubbliche e ha reso possibile l'uso gratuito dei brevetti su exFAT in Linux, nella sezione sperimentale &#171;staging&#187; (&#171;drivers\/staging\/&#187;) del kernel 5.4 \u00e8 stato aggiunto il driver exFAT, sviluppato anch'esso in Samsung, ma basato su  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/dorimanx\/exfat-nofuse\">un codice obsoleto<\/a><\/noindex> (versione 1.2.9). \u00c8 stato <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51490\">portato<\/a><\/noindex> un nuovo driver sdFAT (2.x), ma l'azienda Samsung ha deciso autonomamente di promuovere questo driver nel kernel principale di Linux. Inoltre, l'azienda Paragon Software ha aperto <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51724\">un driver alternativo<\/a><\/noindex>, precedentemente fornito in un pacchetto di driver proprietari.<\/p>\n<p>Il file system exFAT \u00e8 stato creato da Microsoft per superare le limitazioni di FAT32 nell'uso su unit\u00e0 flash di grande capacit\u00e0. Il supporto per il file system exFAT \u00e8 apparso in Windows Vista Service Pack 1 e in Windows XP con Service Pack 2. La dimensione massima dei file rispetto a FAT32 \u00e8 stata ampliata da 4 GB a 16 exabyte, \u00e8 stata eliminata la limitazione sulla dimensione massima delle partizioni a 32 GB, per ridurre la frammentazione e aumentare la velocit\u00e0 \u00e8 stata introdotta una bitmap dei blocchi liberi, il limite sul numero di file in una directory \u00e8 stato elevato a 65.000, ed \u00e8 stata prevista la possibilit\u00e0 di memorizzare ACL. <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52222\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Samsung \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b\u0430 \u0434\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u044f\u0434\u0440\u043e Linux \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043d\u043e\u0432\u043e\u0433\u043e \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 exFAT, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u0435 &#171;sdfat&#187;, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u043f\u0440\u043e\u0448\u0438\u0432\u043e\u043a Android-\u0441\u043c\u0430\u0440\u0442\u0444\u043e\u043d\u043e\u0432 Samsung. \u0415\u0441\u043b\u0438 \u043f\u0430\u0442\u0447\u0438 \u0431\u0443\u0434\u0443\u0442 \u043f\u0440\u0438\u043d\u044f\u0442\u044b, \u0442\u043e \u043e\u043d\u0438 \u0432\u043e\u0439\u0434\u0443\u0442 \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux 5.6, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043e\u0436\u0438\u0434\u0430\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 2-3 \u043c\u0435\u0441\u044f\u0446\u0430. \u041f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e \u0441 \u0440\u0430\u043d\u0435\u0435 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u043c \u0432 \u044f\u0434\u0440\u043e \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u043e\u043c exFAT, \u043d\u043e\u0432\u044b\u0439 \u0434\u0440\u0430\u0439\u0432\u0435\u0440 [&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-55473","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta 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