[$] Improving FUSE writeback performance
In a combined filesystem and memory-management session at
the 2025 Linux Storage, Filesystem, Memory
Management, and BPF Summit (LSFMM+BPF), Joanne Koong led a discussion on
improving the writeback performance for the
Filesystem in
Userspace (FUSE) layer. Writeback is how data that is written to the
filesystem is actually flushed to the disk; it is the process of writing
dirty pages from the page cache to storage. The current FUSE
implementation allocates unmovable memory, then copies the dirty data to it
before initiating writeback, which is slow; Koong wanted to change that
behavior. Since the session, she has
posted a
patch set that has been https://lwn.net/ml/all/CAJfpegveOFoL-XzDKQZZ4U6UF_AetNwTUDbfmf7rdJasRFm3xA@mail.gmail.com/
by FUSE maintainer Miklos Szeredi.
https://lwn.net/Articles/1019522/
@ LWN.net (RSS Feed)
2025-05-06 18:55:52[$] Improving FUSE writeback performance In a combined filesystem and memory-management session at the 2025 Linux Storage, Filesystem, Memory Management, and BPF Summit (LSFMM+BPF), Joanne Koong led a discussion on improving the writeback performance for the Filesystem in Userspace (FUSE) layer. Writeback is how data that is written to the filesystem is actually flushed to the disk; it is the process of writing dirty pages from the page cache to storage. The current FUSE implementation allocates unmovable memory, then copies the dirty data to it before initiating writeback, which is slow; Koong wanted to change that behavior. Since the session, she has posted a patch set that has been https://lwn.net/ml/all/CAJfpegveOFoL-XzDKQZZ4U6UF_AetNwTUDbfmf7rdJasRFm3xA@mail.gmail.com/ by FUSE maintainer Miklos Szeredi. https://lwn.net/Articles/1019522/