Linux Kernel Daily: VFS Subsystem Fixes for Release Candidate 8
Linus Torvalds merged a comprehensive set of virtual file system fixes targeting kernel version 6.19 release candidate 8. The merge addresses critical issues across multiple filesystems including FUSE race conditions, NFS delegation handling, and writeback scheduling problems.
Duration: PT1M58S
Episode overview
This episode is a short developer briefing from Linux Kernel Daily.
It explains recent repository work in plain language.
- Show: Linux Kernel Daily
- Published: 2026-01-27T11:01:53Z
- Audio duration: PT1M58S
Transcript excerpt
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Good morning, this is Linux Kernel Daily for January 27th, 2026.
Today brings one significant merge from Linus Torvalds, pulling VFS fixes from Christian Brauner for kernel 6.19 release candidate 8. This substantial merge addresses multiple critical issues across the virtual file system layer.
The merge tackles several key areas. FUSE receives the most attention with fixes for a buggy conversion in fuse_reverse_inval_entry, improvements to stale dentry cleanup to prevent use-after-free conditions, and better handling of hash bucket scanning. The fixes also address a race condition when disposing stale…
Directory delegation handling sees widespread improvements across multiple filesystems. NFS, Ceph, GFS2, 9P, and SMB client implementations now properly disallow delegation requests for directories by setting simple_nosetlease.
The writeback subsystem receives performance and correctness fixes. The merge resolves a 100% CPU usage issue when dirtytime_expire_interval is set to zero, implements proper scheduling of dirty time work only when intervals are non-zero, and switches to rounded_jiffies_interval for better timer efficiency.
Additional fixes include requiring opt-in for readdir…
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