diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-fs-f2fs')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 117 |
1 files changed, 115 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 11b7f4ebea7c..0cd608e3ed12 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -31,6 +31,12 @@ Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> Description: Controls the issue rate of segment discard commands. +What: /sys/fs/f2fs/<disk>/max_blkaddr +Date: November 2019 +Contact: "Ramon Pantin" <pantin@google.com> +Description: + Shows first block address of MAIN area. + What: /sys/fs/f2fs/<disk>/ipu_policy Date: November 2013 Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> @@ -51,6 +57,26 @@ Description: Controls the dirty page count condition for the in-place-update policies. +What: /sys/fs/f2fs/<disk>/min_seq_blocks +Date: August 2018 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Controls the dirty page count condition for batched sequential + writes in ->writepages. + + +What: /sys/fs/f2fs/<disk>/min_hot_blocks +Date: March 2017 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Controls the dirty page count condition for redefining hot data. + +What: /sys/fs/f2fs/<disk>/min_ssr_sections +Date: October 2017 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Controls the fee section threshold to trigger SSR allocation. + What: /sys/fs/f2fs/<disk>/max_small_discards Date: November 2013 Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> @@ -66,12 +92,28 @@ Description: The unit size is one block, now only support configuring in range of [1, 512]. +What: /sys/fs/f2fs/<disk>/umount_discard_timeout +Date: January 2019 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Set timeout to issue discard commands during umount. + Default: 5 secs + What: /sys/fs/f2fs/<disk>/max_victim_search Date: January 2014 Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> Description: Controls the number of trials to find a victim segment. +What: /sys/fs/f2fs/<disk>/migration_granularity +Date: October 2018 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Controls migration granularity of garbage collection on large + section, it can let GC move partial segment{s} of one section + in one GC cycle, so that dispersing heavy overhead GC to + multiple lightweight one. + What: /sys/fs/f2fs/<disk>/dir_level Date: March 2014 Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> @@ -89,6 +131,7 @@ Date: February 2015 Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Controls the trimming rate in batch mode. + <deprecated> What: /sys/fs/f2fs/<disk>/cp_interval Date: October 2015 @@ -100,7 +143,28 @@ What: /sys/fs/f2fs/<disk>/idle_interval Date: January 2016 Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: - Controls the idle timing. + Controls the idle timing for all paths other than + discard and gc path. + +What: /sys/fs/f2fs/<disk>/discard_idle_interval +Date: September 2018 +Contact: "Chao Yu" <yuchao0@huawei.com> +Contact: "Sahitya Tummala" <stummala@codeaurora.org> +Description: + Controls the idle timing for discard path. + +What: /sys/fs/f2fs/<disk>/gc_idle_interval +Date: September 2018 +Contact: "Chao Yu" <yuchao0@huawei.com> +Contact: "Sahitya Tummala" <stummala@codeaurora.org> +Description: + Controls the idle timing for gc path. + +What: /sys/fs/f2fs/<disk>/iostat_enable +Date: August 2017 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Controls to enable/disable IO stat. What: /sys/fs/f2fs/<disk>/ra_nid_pages Date: October 2015 @@ -122,6 +186,12 @@ Contact: "Shuoran Liu" <liushuoran@huawei.com> Description: Shows total written kbytes issued to disk. +What: /sys/fs/f2fs/<disk>/feature +Date: July 2017 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Shows all enabled features in current device. + What: /sys/fs/f2fs/<disk>/inject_rate Date: May 2016 Contact: "Sheng Yong" <shengyong1@huawei.com> @@ -138,7 +208,18 @@ What: /sys/fs/f2fs/<disk>/reserved_blocks Date: June 2017 Contact: "Chao Yu" <yuchao0@huawei.com> Description: - Controls current reserved blocks in system. + Controls target reserved blocks in system, the threshold + is soft, it could exceed current available user space. + +What: /sys/fs/f2fs/<disk>/current_reserved_blocks +Date: October 2017 +Contact: "Yunlong Song" <yunlong.song@huawei.com> +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Shows current reserved blocks in system, it may be temporarily + smaller than target_reserved_blocks, but will gradually + increase to target_reserved_blocks when more free blocks are + freed by user later. What: /sys/fs/f2fs/<disk>/gc_urgent Date: August 2017 @@ -151,3 +232,35 @@ Date: August 2017 Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Controls sleep time of GC urgent mode + +What: /sys/fs/f2fs/<disk>/readdir_ra +Date: November 2017 +Contact: "Sheng Yong" <shengyong1@huawei.com> +Description: + Controls readahead inode block in readdir. + +What: /sys/fs/f2fs/<disk>/extension_list +Date: Feburary 2018 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Used to control configure extension list: + - Query: cat /sys/fs/f2fs/<disk>/extension_list + - Add: echo '[h/c]extension' > /sys/fs/f2fs/<disk>/extension_list + - Del: echo '[h/c]!extension' > /sys/fs/f2fs/<disk>/extension_list + - [h] means add/del hot file extension + - [c] means add/del cold file extension + +What: /sys/fs/f2fs/<disk>/unusable +Date April 2019 +Contact: "Daniel Rosenberg" <drosen@google.com> +Description: + If checkpoint=disable, it displays the number of blocks that are unusable. + If checkpoint=enable it displays the enumber of blocks that would be unusable + if checkpoint=disable were to be set. + +What: /sys/fs/f2fs/<disk>/encoding +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) |