{"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, un insieme di patch con l'implementazione di un nuovo driver exFAT, basato sull'attuale codice sorgente &#171;sdfat&#187;, sviluppato per i firmware degli smartphone Android Samsung. Se le patch saranno accettate, entreranno a far parte del kernel Linux 5.6, il cui rilascio \u00e8 previsto tra 2-3 mesi. Rispetto al driver exFAT precedentemente aggiunto al kernel, il nuovo driver offre un aumento delle prestazioni di circa il 10%.<\/p>\n<p>Le principali differenze della revisione del driver sdfat per il kernel principale di Linux rispetto al driver utilizzato da Samsung in Android sono:<\/p>\n<ul>\n<li class=\"l\"> 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\"> Effettuato il refactoring del codice. I sorgenti sono stati adeguati alle specifiche di formattazione del codice per il kernel Linux;\n<li class=\"l\"> Ottimizzate le operazioni sui metadati, come la creazione di file, la ricerca di elementi del file system (lookup) e la determinazione del contenuto della directory (readdir).\n<li class=\"l\"> Corrette le anomalie riscontrate durante ulteriori test.\n<\/ul>\n<p>Ricordiamo che dopo che Microsoft <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51374\">ha pubblicato<\/a><\/noindex> specifiche pubbliche e ha fornito la possibilit\u00e0 di utilizzo gratuito dei diritti sui brevetti exFAT in Linux, nella sezione sperimentale &#171;staging&#187; (&#171;drivers\/staging\/&#187;) del kernel 5.4 \u00e8 stato aggiunto un driver exFAT, anch'esso sviluppato in Samsung, ma basato su  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/dorimanx\/exfat-nofuse\">codice obsoleto<\/a><\/noindex> (versione 1.2.9). Gli appassionati dei firmware Android hanno <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51490\">portato<\/a><\/noindex> nuovo driver sdFAT (2.x), ma Samsung ha deciso autonomamente di occuparsi della promozione di questo driver nel kernel principale di Linux. Inoltre, la 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 driver proprietario.<\/p>\n<p>Il file system exFAT \u00e8 stato creato da Microsoft per superare le limitazioni di FAT32 per l'uso su unit\u00e0 Flash di grande capacit\u00e0. Il supporto per il file system exFAT \u00e8 stato introdotto in Windows Vista Service Pack 1 e Windows XP con Service Pack 2. La dimensione massima del file rispetto a FAT32 \u00e8 stata ampliata da 4 GB a 16 exabyte, eliminata la limitazione sulla dimensione massima della partizione di 32 GB, per ridurre la frammentazione e aumentare la velocit\u00e0 \u00e8 stata introdotta una bitmap di blocchi liberi, il limite del numero di file in una directory \u00e8 stato elevato a 65.000, ed \u00e8 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 5.0.0.1 - aioseo.com -->\n\t<meta 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