F2FS Integrates FSERROR Reporting, Reduces Memory Footprint In Linux 7.2
([Linux Storage] 5 Hours Ago
Linux 7.2 F2FS)
- Reference: 0001642949
- News link: https://www.phoronix.com/news/Linux-7.2-F2FS
- Source link:
The Flash-Friendly File-System ( [1]F2FS ) changes have landed for Linux 7.2.
One of the most notable changes for F2FS in Linux 7.2 is [2]FSERROR error reporting support . The FSERROR framework was merged in Linux 7.0 for handling [3]generic I/O error reporting that can be common across Linux file-systems rather than each file-system rolling their own reporting implementation. Now with Linux 7.2, F2FS has joined the FSERROR party for standardizing I/O error reporting.
F2FS with Linux 7.2 also reduces the memory footprint of using this file-system by reverting in-memory data structures that are used for runtime validation. Plus a variety of other improvements too. F2FS is now honoring per-I/O write streams for direct writess, mapping data writes to FDP streams, and other optimizations.
The in-memory block bitmap was dropped after being present in the kernel for a decade but the developers in this time never saw any reported cases of in-memory corruption. Thus just wasting memory. The in-memory sit version bitmap was also in F2FS for about a decade without having proven any real-world benefit too and thus dropped for saving memory.
More details on the F2FS feature changes as well as a variety of bug fixes for this flash-optimized file-system can be found via [4]this pull request that has since been merged for Linux 7.2.
[1] https://www.phoronix.com/search/F2FS
[2] https://www.phoronix.com/news/F2FS-FSERROR
[3] https://www.phoronix.com/news/Linux-7.0-VFS
[4] https://lore.kernel.org/lkml/ajrLmn16uMPcc4Lv@google.com/
One of the most notable changes for F2FS in Linux 7.2 is [2]FSERROR error reporting support . The FSERROR framework was merged in Linux 7.0 for handling [3]generic I/O error reporting that can be common across Linux file-systems rather than each file-system rolling their own reporting implementation. Now with Linux 7.2, F2FS has joined the FSERROR party for standardizing I/O error reporting.
F2FS with Linux 7.2 also reduces the memory footprint of using this file-system by reverting in-memory data structures that are used for runtime validation. Plus a variety of other improvements too. F2FS is now honoring per-I/O write streams for direct writess, mapping data writes to FDP streams, and other optimizations.
The in-memory block bitmap was dropped after being present in the kernel for a decade but the developers in this time never saw any reported cases of in-memory corruption. Thus just wasting memory. The in-memory sit version bitmap was also in F2FS for about a decade without having proven any real-world benefit too and thus dropped for saving memory.
More details on the F2FS feature changes as well as a variety of bug fixes for this flash-optimized file-system can be found via [4]this pull request that has since been merged for Linux 7.2.
[1] https://www.phoronix.com/search/F2FS
[2] https://www.phoronix.com/news/F2FS-FSERROR
[3] https://www.phoronix.com/news/Linux-7.0-VFS
[4] https://lore.kernel.org/lkml/ajrLmn16uMPcc4Lv@google.com/