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android_kernel_oneplus_msm8998/Documentation/ABI/testing/sysfs-fs-f2fs

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f2fs: add sysfs support for controlling the gc_thread Add sysfs entries to control the timing parameters for f2fs gc thread. Various Sysfs options introduced are: gc_min_sleep_time: Min Sleep time for GC in ms gc_max_sleep_time: Max Sleep time for GC in ms gc_no_gc_sleep_time: Default Sleep time for GC in ms Cc: Gu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com> Reviewed-by: Gu Zheng <guz.fnst@cn.fujitsu.com> [Jaegeuk Kim: fix an umount bug and some minor changes] Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-08-04 23:09:40 +09:00
What: /sys/fs/f2fs/<disk>/gc_max_sleep_time
Date: July 2013
Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
Description:
Controls the maximun sleep time for gc_thread. Time
is in milliseconds.
What: /sys/fs/f2fs/<disk>/gc_min_sleep_time
Date: July 2013
Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
Description:
Controls the minimum sleep time for gc_thread. Time
is in milliseconds.
What: /sys/fs/f2fs/<disk>/gc_no_gc_sleep_time
Date: July 2013
Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
Description:
Controls the default sleep time for gc_thread. Time
is in milliseconds.
f2fs: add sysfs entries to select the gc policy Add sysfs entry gc_idle to control the gc policy. Where gc_idle = 1 corresponds to selecting a cost benefit approach, while gc_idle = 2 corresponds to selecting a greedy approach to garbage collection. The selection is mutually exclusive one approach will work at any point. If gc_idle = 0, then this option is disabled. Cc: Gu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com> Reviewed-by: Gu Zheng <guz.fnst@cn.fujitsu.com> [Jaegeuk Kim: change the select_gc_type() flow slightly] Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-08-04 23:10:15 +09:00
What: /sys/fs/f2fs/<disk>/gc_idle
Date: July 2013
Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
Description:
Controls the victim selection policy for garbage collection.
f2fs: update documents and a MAINTAINERS entry This patch adds missing some description of sysfs entries in - Documentation/ABI/testing/sysfs-fs-f2fs - Documentation/filesystems/f2fs.txt. And it adds a maintained document entry of F2FS in MAINTAINERS. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-01-09 21:00:06 +09:00
What: /sys/fs/f2fs/<disk>/reclaim_segments
Date: October 2013
Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description:
Controls the issue rate of segment discard commands.
What: /sys/fs/f2fs/<disk>/ipu_policy
Date: November 2013
Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description:
Controls the in-place-update policy.
What: /sys/fs/f2fs/<disk>/min_ipu_util
Date: November 2013
Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description:
Controls the FS utilization condition for the in-place-update
policies.
f2fs: give an option to enable in-place-updates during fsync to users If user wrote F2FS_IPU_FSYNC:4 in /sys/fs/f2fs/ipu_policy, f2fs_sync_file only starts to try in-place-updates. And, if the number of dirty pages is over /sys/fs/f2fs/min_fsync_blocks, it keeps out-of-order manner. Otherwise, it triggers in-place-updates. This may be used by storage showing very high random write performance. For example, it can be used when, Seq. writes (Data) + wait + Seq. writes (Node) is pretty much slower than, Rand. writes (Data) Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-09-10 16:53:02 -07:00
What: /sys/fs/f2fs/<disk>/min_fsync_blocks
Date: September 2014
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Controls the dirty page count condition for the in-place-update
policies.
f2fs: updates on 4.15-rc1 Pull f2fs updates from Jaegeuk Kim: "In this round, we introduce sysfile-based quota support which is required for Android by default. In addition, we allow that users are able to reserve some blocks in runtime to mitigate performance drops in low free space. Enhancements: - assign proper data segments according to write_hints given by user - issue cache_flush on dirty devices only among multiple devices - exploit cp_error flag and add more faults to enhance fault injection test - conduct more readaheads during f2fs_readdir - add a range for discard commands Bug fixes: - fix zero stat->st_blocks when inline_data is set - drop crypto key and free stale memory pointer while evict_inode is failing - fix some corner cases in free space and segment management - fix wrong last_disk_size This series includes lots of clean-ups and code enhancement in terms of xattr operations, discard/flush command control. In addition, it adds versatile debugfs entries to monitor f2fs status" Cherry-picked from origin/upstream-f2fs-stable-linux-4.4.y: 56a07b070510 f2fs: deny accessing encryption policy if encryption is off c394842e26e5 f2fs: inject fault in inc_valid_node_count 926292251022 f2fs: fix to clear FI_NO_PREALLOC e6cfc5de2d05 f2fs: expose quota information in debugfs c4cd2efe835b f2fs: separate nat entry mem alloc from nat_tree_lock 48c72b4c8c50 f2fs: validate before set/clear free nat bitmap baf9275a4bbd f2fs: avoid opened loop codes in __add_ino_entry 47af6c72d944 f2fs: apply write hints to select the type of segments for buffered write ac9819160586 f2fs: introduce scan_curseg_cache for cleanup ca28e9670e80 f2fs: optimize the way of traversing free_nid_bitmap 460688b59e8b f2fs: keep scanning until enough free nids are acquired 0186182c0c4d f2fs: trace checkpoint reason in fsync() 5d4b6efcfd09 f2fs: keep isize once block is reserved cross EOF 3c8f767e1374 f2fs: avoid race in between GC and block exchange 4423778adf0e f2fs: save a multiplication for last_nid calculation 3e3b40557525 f2fs: fix summary info corruption 44889e487981 f2fs: remove dead code in update_meta_page 55c7b9595bb9 f2fs: remove unneeded semicolon 8b92814117d5 f2fs: don't bother with inode->i_version 42c7c71824fc f2fs: check curseg space before foreground GC c5470498e59b f2fs: use rw_semaphore to protect SIT cache 82750d346ab7 f2fs: support quota sys files 26dfec49b25a f2fs: add quota_ino feature infra ddb8e2ae9811 f2fs: optimize __update_nat_bits f46ae958c701 f2fs: modify for accurate fggc node io stat c713fdb5a23c Revert "f2fs: handle dirty segments inside refresh_sit_entry" 873ec505cb07 f2fs: add a function to move nid ae66786296b4 f2fs: export SSR allocation threshold 90c28a18d2a4 f2fs: give correct trimmed blocks in fstrim 5612922fb0ac f2fs: support bio allocation error injection 583b7a274c27 f2fs: support get_page error injection 09a073cc8c56 f2fs: add missing sysfs description e945474a9c1b f2fs: support soft block reservation b7b2e629b6f6 f2fs: handle error case when adding xattr entry 7368e30495c5 f2fs: support flexible inline xattr size ada4061e191b f2fs: show current cp state 5b8ff1301a61 f2fs: add missing quota_initialize 46d4a691f035 f2fs: show # of dirty segments via sysfs fc13f9d7ce1e f2fs: stop all the operations by cp_error flag 91bea0c391b3 f2fs: remove several redundant assignments 807486c79534 f2fs: avoid using timespec 03b1cb0bb4a2 f2fs: fix to correct no_fggc_candidate 5c15033ceaea Revert "f2fs: return wrong error number on f2fs_quota_write" 5f5f59322240 f2fs: remove obsolete pointer for truncate_xattr_node 032a6906825a f2fs: retry ENOMEM for quota_read|write 171b638fc49b f2fs: limit # of inmemory pages 83ed7a615f0a f2fs: update ctx->pos correctly when hitting hole in directory 4d6e68be2534 f2fs: relocate readahead codes in readdir() c8be47b54018 f2fs: allow readdir() to be interrupted 2b903fe94cd0 f2fs: trace f2fs_readdir bb0db666d4bc f2fs: trace f2fs_lookup 40d6250f046a f2fs: skip searching non-exist range in truncate_hole 8e84f379df61 f2fs: expose some sectors to user in inline data or dentry case cb98f70dea02 f2fs: avoid stale fi->gdirty_list pointer 5562a3c53963 f2fs/crypto: drop crypto key at evict_inode only 85853e7e38d7 f2fs: fix to avoid race when accessing last_disk_size 0c47a892d555 f2fs: Fix bool initialization/comparison 68e801abc520 f2fs: give up CP_TRIMMED_FLAG if it drops discards df74eacb2075 f2fs: trace f2fs_remove_discard bd502c6e3e7a f2fs: reduce cmd_lock coverage in __issue_discard_cmd a34ab5ca4f94 f2fs: split discard policy 1e65afd14d32 f2fs: wrap discard policy 684447dad138 f2fs: support issuing/waiting discard in range 27eaad09380f f2fs: fix to flush multiple device in checkpoint 08bb9d68d51b f2fs: enhance multiple device flush 9c2526ac2ecb f2fs: fix to show ino management cache size correctly 814b463d262f f2fs: drop FI_UPDATE_WRITE tag after f2fs_issue_flush f555b0a117d3 f2fs: obsolete ALLOC_NID_LIST list 75d3164ae128 f2fs: convert inline data for direct I/O & FI_NO_PREALLOC 4de0ceb6b7ef f2fs: allow readpages with NULL file pointer 322a45d17212 f2fs: show flush list status in sysfs 6d625a93b4a8 f2fs: introduce read_xattr_block 8ea6e1c327c5 f2fs: introduce read_inline_xattr dbce11e9ee5b Revert "f2fs: reuse nids more aggressively" 131bc9f6b7f9 Revert "f2fs: node segment is prior to data segment selected victim" Change-Id: I93b9cd867b859a667a448b39299ff44a2b841b8c Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-09-23 17:02:18 +08:00
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.
f2fs: update documents and a MAINTAINERS entry This patch adds missing some description of sysfs entries in - Documentation/ABI/testing/sysfs-fs-f2fs - Documentation/filesystems/f2fs.txt. And it adds a maintained document entry of F2FS in MAINTAINERS. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-01-09 21:00:06 +09:00
What: /sys/fs/f2fs/<disk>/max_small_discards
Date: November 2013
Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description:
Controls the issue rate of small discard commands.
f2fs: catch up to v4.14-rc1 This is cherry-picked from upstrea-f2fs-stable-linux-4.4.y. Changes include: commit c7fd9e2b4a6876 ("f2fs: hurry up to issue discard after io interruption") commit 603dde39653d6d ("f2fs: fix to show correct discard_granularity in sysfs") ... commit 565f0225f95f15 ("f2fs: factor out discard command info into discard_cmd_control") commit c4cc29d19eaf01 ("f2fs: remove batched discard in f2fs_trim_fs") Change-Id: Icd8a85ac0c19a8aa25cd2591a12b4e9b85bdf1c5 Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-01-09 18:16:29 -08:00
What: /sys/fs/f2fs/<disk>/discard_granularity
Date: July 2017
Contact: "Chao Yu" <yuchao0@huawei.com>
Description:
Controls discard granularity of inner discard thread, inner thread
will not issue discards with size that is smaller than granularity.
The unit size is one block, now only support configuring in range
of [1, 512].
f2fs: update documents and a MAINTAINERS entry This patch adds missing some description of sysfs entries in - Documentation/ABI/testing/sysfs-fs-f2fs - Documentation/filesystems/f2fs.txt. And it adds a maintained document entry of F2FS in MAINTAINERS. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-01-09 21:00:06 +09:00
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.
f2fs: throttle the memory footprint with a sysfs entry This patch introduces ram_thresh, a sysfs entry, which controls the memory footprint used by the free nid list and the nat cache. Previously, the free nid list was controlled by MAX_FREE_NIDS, while the nat cache was managed by NM_WOUT_THRESHOLD. However, this approach cannot be applied dynamically according to the system. So, this patch adds ram_thresh that users can specify the threshold, which is in order of 1 / 1024. For example, if the total ram size is 4GB and the value is set to 10 by default, f2fs tries to control the number of free nids and nat caches not to consume over 10 * (4GB / 1024) = 10MB. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-03-19 13:31:37 +09:00
f2fs: add missing documentation for dir_level This patch adds missing dir_level documentation. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-03-19 13:40:09 +09:00
What: /sys/fs/f2fs/<disk>/dir_level
Date: March 2014
Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description:
Controls the directory level for large directory.
f2fs: throttle the memory footprint with a sysfs entry This patch introduces ram_thresh, a sysfs entry, which controls the memory footprint used by the free nid list and the nat cache. Previously, the free nid list was controlled by MAX_FREE_NIDS, while the nat cache was managed by NM_WOUT_THRESHOLD. However, this approach cannot be applied dynamically according to the system. So, this patch adds ram_thresh that users can specify the threshold, which is in order of 1 / 1024. For example, if the total ram size is 4GB and the value is set to 10 by default, f2fs tries to control the number of free nids and nat caches not to consume over 10 * (4GB / 1024) = 10MB. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-03-19 13:31:37 +09:00
What: /sys/fs/f2fs/<disk>/ram_thresh
Date: March 2014
Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description:
Controls the memory footprint used by f2fs.
f2fs: introduce a batched trim This patch introduces a batched trimming feature, which submits split discard commands. This is to avoid long latency due to huge trim commands. If fstrim was triggered ranging from 0 to the end of device, we should lock all the checkpoint-related mutexes, resulting in very long latency. Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-01-26 17:41:23 -08:00
What: /sys/fs/f2fs/<disk>/trim_sections
Date: February 2015
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Controls the trimming rate in batch mode.
f2fs: introduce a periodic checkpoint flow This patch introduces a periodic checkpoint feature. Note that, this is not enforcing to conduct checkpoints very strictly in terms of trigger timing, instead just hope to help user experiences. The default value is 60 seconds. Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-10-05 14:49:57 -07:00
What: /sys/fs/f2fs/<disk>/cp_interval
Date: October 2015
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Controls the checkpoint timing.
f2fs: export ra_nid_pages to sysfs After finishing building free nid cache, we will try to readahead asynchronously 4 more pages for the next reloading, the count of readahead nid pages is fixed. In some case, like SMR drive, read less sectors with fixed count each time we trigger RA may be low efficient, since we will face high seeking overhead, so we'd better let user to configure this parameter from sysfs in specific workload. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-10-12 17:08:48 +08:00
f2fs: updates on 4.15-rc1 Pull f2fs updates from Jaegeuk Kim: "In this round, we introduce sysfile-based quota support which is required for Android by default. In addition, we allow that users are able to reserve some blocks in runtime to mitigate performance drops in low free space. Enhancements: - assign proper data segments according to write_hints given by user - issue cache_flush on dirty devices only among multiple devices - exploit cp_error flag and add more faults to enhance fault injection test - conduct more readaheads during f2fs_readdir - add a range for discard commands Bug fixes: - fix zero stat->st_blocks when inline_data is set - drop crypto key and free stale memory pointer while evict_inode is failing - fix some corner cases in free space and segment management - fix wrong last_disk_size This series includes lots of clean-ups and code enhancement in terms of xattr operations, discard/flush command control. In addition, it adds versatile debugfs entries to monitor f2fs status" Cherry-picked from origin/upstream-f2fs-stable-linux-4.4.y: 56a07b070510 f2fs: deny accessing encryption policy if encryption is off c394842e26e5 f2fs: inject fault in inc_valid_node_count 926292251022 f2fs: fix to clear FI_NO_PREALLOC e6cfc5de2d05 f2fs: expose quota information in debugfs c4cd2efe835b f2fs: separate nat entry mem alloc from nat_tree_lock 48c72b4c8c50 f2fs: validate before set/clear free nat bitmap baf9275a4bbd f2fs: avoid opened loop codes in __add_ino_entry 47af6c72d944 f2fs: apply write hints to select the type of segments for buffered write ac9819160586 f2fs: introduce scan_curseg_cache for cleanup ca28e9670e80 f2fs: optimize the way of traversing free_nid_bitmap 460688b59e8b f2fs: keep scanning until enough free nids are acquired 0186182c0c4d f2fs: trace checkpoint reason in fsync() 5d4b6efcfd09 f2fs: keep isize once block is reserved cross EOF 3c8f767e1374 f2fs: avoid race in between GC and block exchange 4423778adf0e f2fs: save a multiplication for last_nid calculation 3e3b40557525 f2fs: fix summary info corruption 44889e487981 f2fs: remove dead code in update_meta_page 55c7b9595bb9 f2fs: remove unneeded semicolon 8b92814117d5 f2fs: don't bother with inode->i_version 42c7c71824fc f2fs: check curseg space before foreground GC c5470498e59b f2fs: use rw_semaphore to protect SIT cache 82750d346ab7 f2fs: support quota sys files 26dfec49b25a f2fs: add quota_ino feature infra ddb8e2ae9811 f2fs: optimize __update_nat_bits f46ae958c701 f2fs: modify for accurate fggc node io stat c713fdb5a23c Revert "f2fs: handle dirty segments inside refresh_sit_entry" 873ec505cb07 f2fs: add a function to move nid ae66786296b4 f2fs: export SSR allocation threshold 90c28a18d2a4 f2fs: give correct trimmed blocks in fstrim 5612922fb0ac f2fs: support bio allocation error injection 583b7a274c27 f2fs: support get_page error injection 09a073cc8c56 f2fs: add missing sysfs description e945474a9c1b f2fs: support soft block reservation b7b2e629b6f6 f2fs: handle error case when adding xattr entry 7368e30495c5 f2fs: support flexible inline xattr size ada4061e191b f2fs: show current cp state 5b8ff1301a61 f2fs: add missing quota_initialize 46d4a691f035 f2fs: show # of dirty segments via sysfs fc13f9d7ce1e f2fs: stop all the operations by cp_error flag 91bea0c391b3 f2fs: remove several redundant assignments 807486c79534 f2fs: avoid using timespec 03b1cb0bb4a2 f2fs: fix to correct no_fggc_candidate 5c15033ceaea Revert "f2fs: return wrong error number on f2fs_quota_write" 5f5f59322240 f2fs: remove obsolete pointer for truncate_xattr_node 032a6906825a f2fs: retry ENOMEM for quota_read|write 171b638fc49b f2fs: limit # of inmemory pages 83ed7a615f0a f2fs: update ctx->pos correctly when hitting hole in directory 4d6e68be2534 f2fs: relocate readahead codes in readdir() c8be47b54018 f2fs: allow readdir() to be interrupted 2b903fe94cd0 f2fs: trace f2fs_readdir bb0db666d4bc f2fs: trace f2fs_lookup 40d6250f046a f2fs: skip searching non-exist range in truncate_hole 8e84f379df61 f2fs: expose some sectors to user in inline data or dentry case cb98f70dea02 f2fs: avoid stale fi->gdirty_list pointer 5562a3c53963 f2fs/crypto: drop crypto key at evict_inode only 85853e7e38d7 f2fs: fix to avoid race when accessing last_disk_size 0c47a892d555 f2fs: Fix bool initialization/comparison 68e801abc520 f2fs: give up CP_TRIMMED_FLAG if it drops discards df74eacb2075 f2fs: trace f2fs_remove_discard bd502c6e3e7a f2fs: reduce cmd_lock coverage in __issue_discard_cmd a34ab5ca4f94 f2fs: split discard policy 1e65afd14d32 f2fs: wrap discard policy 684447dad138 f2fs: support issuing/waiting discard in range 27eaad09380f f2fs: fix to flush multiple device in checkpoint 08bb9d68d51b f2fs: enhance multiple device flush 9c2526ac2ecb f2fs: fix to show ino management cache size correctly 814b463d262f f2fs: drop FI_UPDATE_WRITE tag after f2fs_issue_flush f555b0a117d3 f2fs: obsolete ALLOC_NID_LIST list 75d3164ae128 f2fs: convert inline data for direct I/O & FI_NO_PREALLOC 4de0ceb6b7ef f2fs: allow readpages with NULL file pointer 322a45d17212 f2fs: show flush list status in sysfs 6d625a93b4a8 f2fs: introduce read_xattr_block 8ea6e1c327c5 f2fs: introduce read_inline_xattr dbce11e9ee5b Revert "f2fs: reuse nids more aggressively" 131bc9f6b7f9 Revert "f2fs: node segment is prior to data segment selected victim" Change-Id: I93b9cd867b859a667a448b39299ff44a2b841b8c Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-09-23 17:02:18 +08:00
What: /sys/fs/f2fs/<disk>/idle_interval
Date: January 2016
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Controls the idle timing.
What: /sys/fs/f2fs/<disk>/iostat_enable
Date: August 2017
Contact: "Chao Yu" <yuchao0@huawei.com>
Description:
Controls to enable/disable IO stat.
f2fs: export ra_nid_pages to sysfs After finishing building free nid cache, we will try to readahead asynchronously 4 more pages for the next reloading, the count of readahead nid pages is fixed. In some case, like SMR drive, read less sectors with fixed count each time we trigger RA may be low efficient, since we will face high seeking overhead, so we'd better let user to configure this parameter from sysfs in specific workload. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-10-12 17:08:48 +08:00
What: /sys/fs/f2fs/<disk>/ra_nid_pages
Date: October 2015
Contact: "Chao Yu" <chao2.yu@samsung.com>
Description:
Controls the count of nid pages to be readaheaded.
f2fs: catch up to v4.14-rc1 This is cherry-picked from upstrea-f2fs-stable-linux-4.4.y. Changes include: commit c7fd9e2b4a6876 ("f2fs: hurry up to issue discard after io interruption") commit 603dde39653d6d ("f2fs: fix to show correct discard_granularity in sysfs") ... commit 565f0225f95f15 ("f2fs: factor out discard command info into discard_cmd_control") commit c4cc29d19eaf01 ("f2fs: remove batched discard in f2fs_trim_fs") Change-Id: Icd8a85ac0c19a8aa25cd2591a12b4e9b85bdf1c5 Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-01-09 18:16:29 -08:00
What: /sys/fs/f2fs/<disk>/dirty_nats_ratio
Date: January 2016
Contact: "Chao Yu" <chao2.yu@samsung.com>
Description:
Controls dirty nat entries ratio threshold, if current
ratio exceeds configured threshold, checkpoint will
be triggered for flushing dirty nat entries.
What: /sys/fs/f2fs/<disk>/lifetime_write_kbytes
Date: January 2016
Contact: "Shuoran Liu" <liushuoran@huawei.com>
Description:
Shows total written kbytes issued to disk.
f2fs: updates on 4.15-rc1 Pull f2fs updates from Jaegeuk Kim: "In this round, we introduce sysfile-based quota support which is required for Android by default. In addition, we allow that users are able to reserve some blocks in runtime to mitigate performance drops in low free space. Enhancements: - assign proper data segments according to write_hints given by user - issue cache_flush on dirty devices only among multiple devices - exploit cp_error flag and add more faults to enhance fault injection test - conduct more readaheads during f2fs_readdir - add a range for discard commands Bug fixes: - fix zero stat->st_blocks when inline_data is set - drop crypto key and free stale memory pointer while evict_inode is failing - fix some corner cases in free space and segment management - fix wrong last_disk_size This series includes lots of clean-ups and code enhancement in terms of xattr operations, discard/flush command control. In addition, it adds versatile debugfs entries to monitor f2fs status" Cherry-picked from origin/upstream-f2fs-stable-linux-4.4.y: 56a07b070510 f2fs: deny accessing encryption policy if encryption is off c394842e26e5 f2fs: inject fault in inc_valid_node_count 926292251022 f2fs: fix to clear FI_NO_PREALLOC e6cfc5de2d05 f2fs: expose quota information in debugfs c4cd2efe835b f2fs: separate nat entry mem alloc from nat_tree_lock 48c72b4c8c50 f2fs: validate before set/clear free nat bitmap baf9275a4bbd f2fs: avoid opened loop codes in __add_ino_entry 47af6c72d944 f2fs: apply write hints to select the type of segments for buffered write ac9819160586 f2fs: introduce scan_curseg_cache for cleanup ca28e9670e80 f2fs: optimize the way of traversing free_nid_bitmap 460688b59e8b f2fs: keep scanning until enough free nids are acquired 0186182c0c4d f2fs: trace checkpoint reason in fsync() 5d4b6efcfd09 f2fs: keep isize once block is reserved cross EOF 3c8f767e1374 f2fs: avoid race in between GC and block exchange 4423778adf0e f2fs: save a multiplication for last_nid calculation 3e3b40557525 f2fs: fix summary info corruption 44889e487981 f2fs: remove dead code in update_meta_page 55c7b9595bb9 f2fs: remove unneeded semicolon 8b92814117d5 f2fs: don't bother with inode->i_version 42c7c71824fc f2fs: check curseg space before foreground GC c5470498e59b f2fs: use rw_semaphore to protect SIT cache 82750d346ab7 f2fs: support quota sys files 26dfec49b25a f2fs: add quota_ino feature infra ddb8e2ae9811 f2fs: optimize __update_nat_bits f46ae958c701 f2fs: modify for accurate fggc node io stat c713fdb5a23c Revert "f2fs: handle dirty segments inside refresh_sit_entry" 873ec505cb07 f2fs: add a function to move nid ae66786296b4 f2fs: export SSR allocation threshold 90c28a18d2a4 f2fs: give correct trimmed blocks in fstrim 5612922fb0ac f2fs: support bio allocation error injection 583b7a274c27 f2fs: support get_page error injection 09a073cc8c56 f2fs: add missing sysfs description e945474a9c1b f2fs: support soft block reservation b7b2e629b6f6 f2fs: handle error case when adding xattr entry 7368e30495c5 f2fs: support flexible inline xattr size ada4061e191b f2fs: show current cp state 5b8ff1301a61 f2fs: add missing quota_initialize 46d4a691f035 f2fs: show # of dirty segments via sysfs fc13f9d7ce1e f2fs: stop all the operations by cp_error flag 91bea0c391b3 f2fs: remove several redundant assignments 807486c79534 f2fs: avoid using timespec 03b1cb0bb4a2 f2fs: fix to correct no_fggc_candidate 5c15033ceaea Revert "f2fs: return wrong error number on f2fs_quota_write" 5f5f59322240 f2fs: remove obsolete pointer for truncate_xattr_node 032a6906825a f2fs: retry ENOMEM for quota_read|write 171b638fc49b f2fs: limit # of inmemory pages 83ed7a615f0a f2fs: update ctx->pos correctly when hitting hole in directory 4d6e68be2534 f2fs: relocate readahead codes in readdir() c8be47b54018 f2fs: allow readdir() to be interrupted 2b903fe94cd0 f2fs: trace f2fs_readdir bb0db666d4bc f2fs: trace f2fs_lookup 40d6250f046a f2fs: skip searching non-exist range in truncate_hole 8e84f379df61 f2fs: expose some sectors to user in inline data or dentry case cb98f70dea02 f2fs: avoid stale fi->gdirty_list pointer 5562a3c53963 f2fs/crypto: drop crypto key at evict_inode only 85853e7e38d7 f2fs: fix to avoid race when accessing last_disk_size 0c47a892d555 f2fs: Fix bool initialization/comparison 68e801abc520 f2fs: give up CP_TRIMMED_FLAG if it drops discards df74eacb2075 f2fs: trace f2fs_remove_discard bd502c6e3e7a f2fs: reduce cmd_lock coverage in __issue_discard_cmd a34ab5ca4f94 f2fs: split discard policy 1e65afd14d32 f2fs: wrap discard policy 684447dad138 f2fs: support issuing/waiting discard in range 27eaad09380f f2fs: fix to flush multiple device in checkpoint 08bb9d68d51b f2fs: enhance multiple device flush 9c2526ac2ecb f2fs: fix to show ino management cache size correctly 814b463d262f f2fs: drop FI_UPDATE_WRITE tag after f2fs_issue_flush f555b0a117d3 f2fs: obsolete ALLOC_NID_LIST list 75d3164ae128 f2fs: convert inline data for direct I/O & FI_NO_PREALLOC 4de0ceb6b7ef f2fs: allow readpages with NULL file pointer 322a45d17212 f2fs: show flush list status in sysfs 6d625a93b4a8 f2fs: introduce read_xattr_block 8ea6e1c327c5 f2fs: introduce read_inline_xattr dbce11e9ee5b Revert "f2fs: reuse nids more aggressively" 131bc9f6b7f9 Revert "f2fs: node segment is prior to data segment selected victim" Change-Id: I93b9cd867b859a667a448b39299ff44a2b841b8c Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-09-23 17:02:18 +08:00
What: /sys/fs/f2fs/<disk>/feature
Date: July 2017
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Shows all enabled features in current device.
f2fs: catch up to v4.14-rc1 This is cherry-picked from upstrea-f2fs-stable-linux-4.4.y. Changes include: commit c7fd9e2b4a6876 ("f2fs: hurry up to issue discard after io interruption") commit 603dde39653d6d ("f2fs: fix to show correct discard_granularity in sysfs") ... commit 565f0225f95f15 ("f2fs: factor out discard command info into discard_cmd_control") commit c4cc29d19eaf01 ("f2fs: remove batched discard in f2fs_trim_fs") Change-Id: Icd8a85ac0c19a8aa25cd2591a12b4e9b85bdf1c5 Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-01-09 18:16:29 -08:00
What: /sys/fs/f2fs/<disk>/inject_rate
Date: May 2016
Contact: "Sheng Yong" <shengyong1@huawei.com>
Description:
Controls the injection rate.
What: /sys/fs/f2fs/<disk>/inject_type
Date: May 2016
Contact: "Sheng Yong" <shengyong1@huawei.com>
Description:
Controls the injection type.
What: /sys/fs/f2fs/<disk>/reserved_blocks
Date: June 2017
Contact: "Chao Yu" <yuchao0@huawei.com>
Description:
f2fs: updates on 4.15-rc1 Pull f2fs updates from Jaegeuk Kim: "In this round, we introduce sysfile-based quota support which is required for Android by default. In addition, we allow that users are able to reserve some blocks in runtime to mitigate performance drops in low free space. Enhancements: - assign proper data segments according to write_hints given by user - issue cache_flush on dirty devices only among multiple devices - exploit cp_error flag and add more faults to enhance fault injection test - conduct more readaheads during f2fs_readdir - add a range for discard commands Bug fixes: - fix zero stat->st_blocks when inline_data is set - drop crypto key and free stale memory pointer while evict_inode is failing - fix some corner cases in free space and segment management - fix wrong last_disk_size This series includes lots of clean-ups and code enhancement in terms of xattr operations, discard/flush command control. In addition, it adds versatile debugfs entries to monitor f2fs status" Cherry-picked from origin/upstream-f2fs-stable-linux-4.4.y: 56a07b070510 f2fs: deny accessing encryption policy if encryption is off c394842e26e5 f2fs: inject fault in inc_valid_node_count 926292251022 f2fs: fix to clear FI_NO_PREALLOC e6cfc5de2d05 f2fs: expose quota information in debugfs c4cd2efe835b f2fs: separate nat entry mem alloc from nat_tree_lock 48c72b4c8c50 f2fs: validate before set/clear free nat bitmap baf9275a4bbd f2fs: avoid opened loop codes in __add_ino_entry 47af6c72d944 f2fs: apply write hints to select the type of segments for buffered write ac9819160586 f2fs: introduce scan_curseg_cache for cleanup ca28e9670e80 f2fs: optimize the way of traversing free_nid_bitmap 460688b59e8b f2fs: keep scanning until enough free nids are acquired 0186182c0c4d f2fs: trace checkpoint reason in fsync() 5d4b6efcfd09 f2fs: keep isize once block is reserved cross EOF 3c8f767e1374 f2fs: avoid race in between GC and block exchange 4423778adf0e f2fs: save a multiplication for last_nid calculation 3e3b40557525 f2fs: fix summary info corruption 44889e487981 f2fs: remove dead code in update_meta_page 55c7b9595bb9 f2fs: remove unneeded semicolon 8b92814117d5 f2fs: don't bother with inode->i_version 42c7c71824fc f2fs: check curseg space before foreground GC c5470498e59b f2fs: use rw_semaphore to protect SIT cache 82750d346ab7 f2fs: support quota sys files 26dfec49b25a f2fs: add quota_ino feature infra ddb8e2ae9811 f2fs: optimize __update_nat_bits f46ae958c701 f2fs: modify for accurate fggc node io stat c713fdb5a23c Revert "f2fs: handle dirty segments inside refresh_sit_entry" 873ec505cb07 f2fs: add a function to move nid ae66786296b4 f2fs: export SSR allocation threshold 90c28a18d2a4 f2fs: give correct trimmed blocks in fstrim 5612922fb0ac f2fs: support bio allocation error injection 583b7a274c27 f2fs: support get_page error injection 09a073cc8c56 f2fs: add missing sysfs description e945474a9c1b f2fs: support soft block reservation b7b2e629b6f6 f2fs: handle error case when adding xattr entry 7368e30495c5 f2fs: support flexible inline xattr size ada4061e191b f2fs: show current cp state 5b8ff1301a61 f2fs: add missing quota_initialize 46d4a691f035 f2fs: show # of dirty segments via sysfs fc13f9d7ce1e f2fs: stop all the operations by cp_error flag 91bea0c391b3 f2fs: remove several redundant assignments 807486c79534 f2fs: avoid using timespec 03b1cb0bb4a2 f2fs: fix to correct no_fggc_candidate 5c15033ceaea Revert "f2fs: return wrong error number on f2fs_quota_write" 5f5f59322240 f2fs: remove obsolete pointer for truncate_xattr_node 032a6906825a f2fs: retry ENOMEM for quota_read|write 171b638fc49b f2fs: limit # of inmemory pages 83ed7a615f0a f2fs: update ctx->pos correctly when hitting hole in directory 4d6e68be2534 f2fs: relocate readahead codes in readdir() c8be47b54018 f2fs: allow readdir() to be interrupted 2b903fe94cd0 f2fs: trace f2fs_readdir bb0db666d4bc f2fs: trace f2fs_lookup 40d6250f046a f2fs: skip searching non-exist range in truncate_hole 8e84f379df61 f2fs: expose some sectors to user in inline data or dentry case cb98f70dea02 f2fs: avoid stale fi->gdirty_list pointer 5562a3c53963 f2fs/crypto: drop crypto key at evict_inode only 85853e7e38d7 f2fs: fix to avoid race when accessing last_disk_size 0c47a892d555 f2fs: Fix bool initialization/comparison 68e801abc520 f2fs: give up CP_TRIMMED_FLAG if it drops discards df74eacb2075 f2fs: trace f2fs_remove_discard bd502c6e3e7a f2fs: reduce cmd_lock coverage in __issue_discard_cmd a34ab5ca4f94 f2fs: split discard policy 1e65afd14d32 f2fs: wrap discard policy 684447dad138 f2fs: support issuing/waiting discard in range 27eaad09380f f2fs: fix to flush multiple device in checkpoint 08bb9d68d51b f2fs: enhance multiple device flush 9c2526ac2ecb f2fs: fix to show ino management cache size correctly 814b463d262f f2fs: drop FI_UPDATE_WRITE tag after f2fs_issue_flush f555b0a117d3 f2fs: obsolete ALLOC_NID_LIST list 75d3164ae128 f2fs: convert inline data for direct I/O & FI_NO_PREALLOC 4de0ceb6b7ef f2fs: allow readpages with NULL file pointer 322a45d17212 f2fs: show flush list status in sysfs 6d625a93b4a8 f2fs: introduce read_xattr_block 8ea6e1c327c5 f2fs: introduce read_inline_xattr dbce11e9ee5b Revert "f2fs: reuse nids more aggressively" 131bc9f6b7f9 Revert "f2fs: node segment is prior to data segment selected victim" Change-Id: I93b9cd867b859a667a448b39299ff44a2b841b8c Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-09-23 17:02:18 +08:00
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.
f2fs: catch up to v4.14-rc1 This is cherry-picked from upstrea-f2fs-stable-linux-4.4.y. Changes include: commit c7fd9e2b4a6876 ("f2fs: hurry up to issue discard after io interruption") commit 603dde39653d6d ("f2fs: fix to show correct discard_granularity in sysfs") ... commit 565f0225f95f15 ("f2fs: factor out discard command info into discard_cmd_control") commit c4cc29d19eaf01 ("f2fs: remove batched discard in f2fs_trim_fs") Change-Id: Icd8a85ac0c19a8aa25cd2591a12b4e9b85bdf1c5 Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-01-09 18:16:29 -08:00
What: /sys/fs/f2fs/<disk>/gc_urgent
Date: August 2017
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Do background GC agressively
What: /sys/fs/f2fs/<disk>/gc_urgent_sleep_time
Date: August 2017
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Controls sleep time of GC urgent mode
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