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authorJiri Kosina <jkosina@suse.cz>2023-04-26 23:52:34 +0300
committerJiri Kosina <jkosina@suse.cz>2023-04-26 23:52:34 +0300
commitcdc780f044a803aff8845b949f800f0f3d095d5f (patch)
tree6695a80568f6b4aef414070f17859f434e229957 /Documentation/ABI/testing/sysfs-fs-f2fs
parent38518593ec55e897abda4b4be77b2ec8ec4447d1 (diff)
parent37386669887d3f2ccf021322c5558353d20f2387 (diff)
downloadlinux-cdc780f044a803aff8845b949f800f0f3d095d5f.tar.xz
Merge branch 'for-6.4/amd-sfh' into for-linus
- assorted functional fixes for amd-sfh driver (Basavaraj Natikar)
Diffstat (limited to 'Documentation/ABI/testing/sysfs-fs-f2fs')
-rw-r--r--Documentation/ABI/testing/sysfs-fs-f2fs80
1 files changed, 70 insertions, 10 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 9e3756625a81..94132745ecbe 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -49,16 +49,23 @@ Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description: Controls the in-place-update policy.
updates in f2fs. User can set:
- ==== =================
- 0x01 F2FS_IPU_FORCE
- 0x02 F2FS_IPU_SSR
- 0x04 F2FS_IPU_UTIL
- 0x08 F2FS_IPU_SSR_UTIL
- 0x10 F2FS_IPU_FSYNC
- 0x20 F2FS_IPU_ASYNC
- 0x40 F2FS_IPU_NOCACHE
- 0x80 F2FS_IPU_HONOR_OPU_WRITE
- ==== =================
+ ===== =============== ===================================================
+ value policy description
+ 0x00 DISABLE disable IPU(=default option in LFS mode)
+ 0x01 FORCE all the time
+ 0x02 SSR if SSR mode is activated
+ 0x04 UTIL if FS utilization is over threashold
+ 0x08 SSR_UTIL if SSR mode is activated and FS utilization is over
+ threashold
+ 0x10 FSYNC activated in fsync path only for high performance
+ flash storages. IPU will be triggered only if the
+ # of dirty pages over min_fsync_blocks.
+ (=default option)
+ 0x20 ASYNC do IPU given by asynchronous write requests
+ 0x40 NOCACHE disable IPU bio cache
+ 0x80 HONOR_OPU_WRITE use OPU write prior to IPU write if inode has
+ FI_OPU_WRITE flag
+ ===== =============== ===================================================
Refer segment.h for details.
@@ -669,3 +676,56 @@ Contact: "Ping Xiong" <xiongping1@xiaomi.com>
Description: When DATA SEPARATION is on, it controls the age threshold to indicate
the data blocks as warm. By default it was initialized as 2621440 blocks
(equals to 10GB).
+
+What: /sys/fs/f2fs/<disk>/fault_rate
+Date: May 2016
+Contact: "Sheng Yong" <shengyong@oppo.com>
+Contact: "Chao Yu" <chao@kernel.org>
+Description: Enable fault injection in all supported types with
+ specified injection rate.
+
+What: /sys/fs/f2fs/<disk>/fault_type
+Date: May 2016
+Contact: "Sheng Yong" <shengyong@oppo.com>
+Contact: "Chao Yu" <chao@kernel.org>
+Description: Support configuring fault injection type, should be
+ enabled with fault_injection option, fault type value
+ is shown below, it supports single or combined type.
+
+ =================== ===========
+ Type_Name Type_Value
+ =================== ===========
+ FAULT_KMALLOC 0x000000001
+ FAULT_KVMALLOC 0x000000002
+ FAULT_PAGE_ALLOC 0x000000004
+ FAULT_PAGE_GET 0x000000008
+ FAULT_ALLOC_BIO 0x000000010 (obsolete)
+ FAULT_ALLOC_NID 0x000000020
+ FAULT_ORPHAN 0x000000040
+ FAULT_BLOCK 0x000000080
+ FAULT_DIR_DEPTH 0x000000100
+ FAULT_EVICT_INODE 0x000000200
+ FAULT_TRUNCATE 0x000000400
+ FAULT_READ_IO 0x000000800
+ FAULT_CHECKPOINT 0x000001000
+ FAULT_DISCARD 0x000002000
+ FAULT_WRITE_IO 0x000004000
+ FAULT_SLAB_ALLOC 0x000008000
+ FAULT_DQUOT_INIT 0x000010000
+ FAULT_LOCK_OP 0x000020000
+ FAULT_BLKADDR 0x000040000
+ =================== ===========
+
+What: /sys/fs/f2fs/<disk>/discard_io_aware_gran
+Date: January 2023
+Contact: "Yangtao Li" <frank.li@vivo.com>
+Description: Controls background discard granularity of inner discard thread
+ when is not in idle. Inner thread will not issue discards with size that
+ is smaller than granularity. The unit size is one block(4KB), now only
+ support configuring in range of [0, 512].
+ Default: 512
+
+What: /sys/fs/f2fs/<disk>/last_age_weight
+Date: January 2023
+Contact: "Ping Xiong" <xiongping1@xiaomi.com>
+Description: When DATA SEPARATION is on, it controls the weight of last data block age.