diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-fs-f2fs')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 3e1630c70d8a..59adb7dc6f9e 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -347,7 +347,7 @@ Description: Used to control configure extension list: - [c] means add/del cold file extension What: /sys/fs/f2fs/<disk>/unusable -Date April 2019 +Date: April 2019 Contact: "Daniel Rosenberg" <drosen@google.com> Description: If checkpoint=disable, it displays the number of blocks that are unusable. @@ -355,7 +355,7 @@ Description: If checkpoint=disable, it displays the number of blocks that would be unusable if checkpoint=disable were to be set. What: /sys/fs/f2fs/<disk>/encoding -Date July 2019 +Date: July 2019 Contact: "Daniel Rosenberg" <drosen@google.com> Description: Displays name and version of the encoding set for the filesystem. If no encoding is set, displays (none) @@ -734,6 +734,7 @@ Description: Support configuring fault injection type, should be FAULT_BLKADDR_VALIDITY 0x000040000 FAULT_BLKADDR_CONSISTENCE 0x000080000 FAULT_NO_SEGMENT 0x000100000 + FAULT_INCONSISTENT_FOOTER 0x000200000 =========================== =========== What: /sys/fs/f2fs/<disk>/discard_io_aware_gran @@ -828,3 +829,20 @@ Date: November 2024 Contact: "Chao Yu" <chao@kernel.org> Description: It controls max read extent count for per-inode, the value of threshold is 10240 by default. + +What: /sys/fs/f2fs/tuning/reclaim_caches_kb +Date: February 2025 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: It reclaims the given KBs of file-backed pages registered by + ioctl(F2FS_IOC_DONATE_RANGE). + For example, writing N tries to drop N KBs spaces in LRU. + +What: /sys/fs/f2fs/<disk>/carve_out +Date: March 2025 +Contact: "Daeho Jeong" <daehojeong@google.com> +Description: For several zoned storage devices, vendors will provide extra space which + was used for device level GC than specs and F2FS can use this space for + filesystem level GC. To do that, we can reserve the space using + reserved_blocks. However, it is not enough, since this extra space should + not be shown to users. So, with this new sysfs node, we can hide the space + by substracting reserved_blocks from total bytes. |