{"rewrite":{"id":"r_264289a5fc35be98460c1b20","clusterId":"c_0306e27b305afeb55d4360a1","slug":"linux-7-3-ships-with-time-machine-support-and-reworked-cpu-scheduler","model":"deepseek-v4-1-flash","headline":"Linux 7.3 Ships with Time Machine Support and Reworked CPU Scheduler","summary":"Linus Torvalds released Linux 7.3 on October 18, 2026. The kernel's in-kernel file server ksmbd now supports Apple's Time Machine backups over the network with the feature enabled in settings. CPU scheduling on many-core servers is reworked, sched_ext gains per-group allocation methods, and a new failfs file system with the fchroot() system call limits programs to pre-approved files. Btrfs and ext4 read/write performance improves, and ntfs3 adds alternate data streams.","whyItMatters":"The release pushes two jobs deeper into the kernel itself: Mac backups over ksmbd and file access sandboxing through failfs and fchroot(), which removes the need to bolt those functions on outside the kernel.","webCardHtml":"\u003cp\u003eThe ksmbd change matters because the backup path no longer needs Samba running alongside the kernel server. Time Machine support has to be switched on in settings, so an upgrade alone will not turn it on for existing shares.\u003c/p\u003e\u003cp\u003eThe scheduler work points the other way, toward scale. Allocation methods in sched_ext can now differ by group, and virtual machines get a mechanism that tracks frequently used memory areas so usage can be read in more detail. Graphics changes include improved memory management on GPUs with little video memory and better game performance in some GPU environments, and the kernel adds preparation for AMD\u0026#39;s Zen 6 architecture.\u003c/p\u003e","blueskyPost":"Time Machine support lands in the kernel through ksmbd, not a macOS-side update. Apple's backup protocol now runs inside Linux's own file server, which puts the compatibility burden on kernel maintainers instead of Apple.","twitterPost":"Time Machine support in Linux 7.3 runs through ksmbd, so Apple's backup protocol now lives inside the kernel's own file server.","threadsPost":"Linus Torvalds shipped Time Machine compatibility inside ksmbd, the kernel's in-kernel file server. Apple's backup protocol now depends on Linux maintainers keeping pace, not on a macOS-side update. The failfs filesystem and fchroot() call narrow what programs can touch to pre-approved files.","newsletterBlurb":"Linux 7.3 arrived on October 18, 2026, with Time Machine backup support built into the in-kernel ksmbd server. The release also reworks CPU scheduling for many-core machines, adds the failfs file system and fchroot() system call to restrict file access, and improves read/write performance on Btrfs and ext4.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20261020-linux-kernel-7-3/\",\"title\":\"Linux 7.3 released, with support for Mac backup feature Time Machine, improved CPU and memory management, and more\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4673,"outputTokens":634,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1792494438,"createdAt":"2026-10-20T11:02:52.000Z","publishedAt":"2026-10-20T11:06:11.000Z","updatedAt":"2026-10-20T11:06:11.000Z"},"cluster":{"id":"c_0306e27b305afeb55d4360a1","canonicalTitle":"Linux 7.3がリリースされる、Macのバックアップ機能「Time Machine」への対応やCPU・メモリ管理の改善など","representativeArticleId":"a_d7248dadc2c4eb7cb235ab38","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[],\"studios\":[],\"people\":[\"Linus Torvalds\"],\"type\":\"release\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-20T10:00:00.000Z","lastSeenAt":"2026-10-20T10:00:00.000Z","updatedAt":"2026-10-20T11:06:08.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20261020-linux-kernel-7-3/","title":"Linux 7.3がリリースされる、Macのバックアップ機能「Time Machine」への対応やCPU・メモリ管理の改善など"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":[],"studios":[],"people":["Linus Torvalds"],"type":"release","domain":"other","is_roundup":false},"keyFacts":null}