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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.
FROMLIST: f2fs: early updates queued for v4.18-rc1 Cherry-picked from: origin/upstream-f2fs-stable-linux-4.4.y 85d2070f60c6 ("f2fs: turn down IO priority of discard from background") 4738f527db84 ("f2fs: don't split checkpoint in fstrim") 31e2713935ea ("f2fs: issue discard commands proactively in high fs utilization") 70676ef73646 ("f2fs: add fsync_mode=nobarrier for non-atomic files") bb53d06b5f21 ("f2fs: let fstrim issue discard commands in lower priority") Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2018-05-24 13:57:26 -07:00
<deprecated>
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
f2fs: updates on v4.16-rc1 Pull f2fs updates from Jaegeuk Kim: "In this round, we've followed up to support some generic features such as cgroup, block reservation, linking fscrypt_ops, delivering write_hints, and some ioctls. And, we could fix some corner cases in terms of power-cut recovery and subtle deadlocks. Enhancements: - bitmap operations to handle NAT blocks - readahead to improve readdir speed - switch to use fscrypt_* - apply write hints for direct IO - add reserve_root=%u,resuid=%u,resgid=%u to reserve blocks for root/uid/gid - modify b_avail and b_free to consider root reserved blocks - support cgroup writeback - support FIEMAP_FLAG_XATTR for fibmap - add F2FS_IOC_PRECACHE_EXTENTS to pre-cache extents - add F2FS_IOC_{GET/SET}_PIN_FILE to pin LBAs for data blocks - support inode creation time Bug fixs: - sysfile-based quota operations - memory footprint accounting - allow to write data on partial preallocation case - fix deadlock case on fallocate - fix to handle fill_super errors - fix missing inode updates of fsync'ed file - recover renamed file which was fsycn'ed before - drop inmemory pages in corner error case - keep last_disk_size correctly - recover missing i_inline flags during roll-forward Various clean-up patches were added as well" Cherry-pick from origin/upstream-f2fs-stable-linux-4.4.y: 5f9b3abb911f f2fs: support inode creation time 9fb0de175172 f2fs: rebuild sit page from sit info in mem 1062a0c01829 f2fs: stop issuing discard if fs is readonly fa043fae9030 f2fs: clean up duplicated assignment in init_discard_policy b007190234d6 f2fs: use GFP_F2FS_ZERO for cleanup 35b11839a1ae f2fs: allow to recover node blocks given updated checkpoint e56500860be0 f2fs: recover some i_inline flags 64aa9569a1bf f2fs: correct removexattr behavior for null valued extended attribute 70b3a923daff f2fs: drop page cache after fs shutdown 8069a0e983d9 f2fs: stop gc/discard thread after fs shutdown bb924f777717 f2fs: hanlde error case in f2fs_ioc_shutdown 700b53f21ee8 f2fs: split need_inplace_update f31d52811c1f f2fs: fix to update last_disk_size correctly eeb0118b8340 f2fs: kill F2FS_INLINE_XATTR_ADDRS for cleanup c1b74c967092 f2fs: clean up error path of fill_super d5efd57e013b f2fs: avoid hungtask when GC encrypted block if io_bits is set c4027d08430b f2fs: allow quota to use reserved blocks 18d267c273a9 f2fs: fix to drop all inmem pages correctly 4dca47531eb0 f2fs: speed up defragment on sparse file 999f806a7c9e f2fs: support F2FS_IOC_PRECACHE_EXTENTS 84960fca96c4 f2fs: add an ioctl to disable GC for specific file 292c8e1cfd4d f2fs: prevent newly created inode from being dirtied incorrectly 58b1f5b0fcf1 f2fs: support FIEMAP_FLAG_XATTR 6afa9a94d09b f2fs: fix to cover f2fs_inline_data_fiemap with inode_lock 10f4a4140b61 f2fs: check node page again in write end io b203c58dfd55 f2fs: fix to caclulate required free section correctly d49132d45cb0 f2fs: handle newly created page when revoking inmem pages 2ce6b9d8167e f2fs: add resgid and resuid to reserve root blocks f53dcf6799ab f2fs: implement cgroup writeback support 1338f376d5a3 f2fs: remove unused pend_list_tag d4f19f6266ab f2fs: avoid high cpu usage in discard thread b78e9302e2e3 f2fs: make local functions static 62438ba87b79 f2fs: add reserved blocks for root user 06a366757ff7 f2fs: check segment type in __f2fs_replace_block 4c6bc4be375a f2fs: update inode info to inode page for new file 591b33638733 f2fs: show precise # of blocks that user/root can use b242d7edc537 f2fs: clean up unneeded declaration 87b8168e9ef0 f2fs: continue to do direct IO if we only preallocate partial blocks 2b4d859bd9d8 f2fs: enable quota at remount from r to w 54bf13a0adcd f2fs: skip stop_checkpoint for user data writes 25ef3006ba23 f2fs: fix missing error number for xattr operation cff2c7fe417b f2fs: recover directory operations by fsync e2bb618a0a6b f2fs: return error during fill_super 8a2c11d8658d f2fs: fix an error case of missing update inode page cd38d5ada5a4 f2fs: fix potential hangtask in f2fs_trace_pid e81cafbeba4b f2fs: no need return value in restore summary process 04d44000d633 f2fs: use unlikely for release case 925d0933d8f0 f2fs: don't return value in truncate_data_blocks_range f7986c416d1b f2fs: clean up f2fs_map_blocks e4f5e26cdadf f2fs: clean up hash codes 1f994d47080c f2fs: fix error handling in fill_super e7db649b5fb1 f2fs: spread f2fs_k{m,z}alloc 5d4e487b9929 f2fs: inject fault to kvmalloc 8b33886c37cd f2fs: inject fault to kzalloc d94680798786 f2fs: remove a redundant conditional expression 3bc01114a338 f2fs: apply write hints to select the type of segment for direct write c80f01959114 f2fs: switch to fscrypt_prepare_setattr() bb8b850365ff f2fs: switch to fscrypt_prepare_lookup() 9ab470eaf8a8 f2fs: switch to fscrypt_prepare_rename() aeaac517a12d f2fs: switch to fscrypt_prepare_link() 101c6a96ad1c f2fs: switch to fscrypt_file_open() 6d025237a1f8 f2fs: remove repeated f2fs_bug_on b01e03d724de f2fs: remove an excess variable e1f9be2f7c82 f2fs: fix lock dependency in between dio_rwsem & i_mmap_sem e5c7c8601030 f2fs: remove unused parameter f130dbb98a68 f2fs: still write data if preallocate only partial blocks 47ee9b259811 f2fs: introduce sysfs readdir_ra to readahead inode block in readdir 55e2f89181ce f2fs: fix concurrent problem for updating free bitmap e1398f6554b4 f2fs: remove unneeded memory footprint accounting 2d69561135f2 f2fs: no need to read nat block if nat_block_bitmap is set 4dd2d0733809 f2fs: reserve nid resource for quota sysfile Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2017-11-16 16:59:14 +08:00
What: /sys/fs/f2fs/<disk>/readdir_ra
Date: November 2017
Contact: "Sheng Yong" <shengyong1@huawei.com>
Description:
Controls readahead inode block in readdir.
f2fs/fscrypt: updates to v4.17-rc1 Pull f2fs update from Jaegeuk Kim: "In this round, we've mainly focused on performance tuning and critical bug fixes occurred in low-end devices. Sheng Yong introduced lost_found feature to keep missing files during recovery instead of thrashing them. We're preparing coming fsverity implementation. And, we've got more features to communicate with users for better performance. In low-end devices, some memory-related issues were fixed, and subtle race condtions and corner cases were addressed as well. Enhancements: - large nat bitmaps for more free node ids - add three block allocation policies to pass down write hints given by user - expose extension list to user and introduce hot file extension - tune small devices seamlessly for low-end devices - set readdir_ra by default - give more resources under gc_urgent mode regarding to discard and cleaning - introduce fsync_mode to enforce posix or not - nowait aio support - add lost_found feature to keep dangling inodes - reserve bits for future fsverity feature - add test_dummy_encryption for FBE Bug fixes: - don't use highmem for dentry pages - align memory boundary for bitops - truncate preallocated blocks in write errors - guarantee i_times on fsync call - clear CP_TRIMMED_FLAG correctly - prevent node chain loop during recovery - avoid data race between atomic write and background cleaning - avoid unnecessary selinux violation warnings on resgid option - GFP_NOFS to avoid deadlock in quota and read paths - fix f2fs_skip_inode_update to allow i_size recovery In addition to the above, there are several minor bug fixes and clean-ups" Cherry-pick from origin/upstream-f2fs-stable-linux-4.4.y: 42bf67fc543b f2fs: remain written times to update inode during fsync 6cb5aa02bfbd f2fs: make assignment of t->dentry_bitmap more readable a8d07f1f9c62 f2fs: truncate preallocated blocks in error case 86444d600692 f2fs: fix a wrong condition in f2fs_skip_inode_update db2188a68704 f2fs: reserve bits for fs-verity ee2e74b3f00e f2fs: Add a segment type check in inplace write 0192e0a4502f f2fs: no need to initialize zero value for GFP_F2FS_ZERO 49338842e9b2 f2fs: don't track new nat entry in nat set d6a69d5e6568 f2fs: clean up with F2FS_BLK_ALIGN 2c8834a7a2c9 f2fs: check blkaddr more accuratly before issue a bio 6ab573a9d96f f2fs: Set GF_NOFS in read_cache_page_gfp while doing f2fs_quota_read 7419dcb8be02 f2fs: introduce a new mount option test_dummy_encryption 9321e22c038c f2fs: introduce F2FS_FEATURE_LOST_FOUND feature 8a5719615847 f2fs: release locks before return in f2fs_ioc_gc_range() 739ace131cdf f2fs: align memory boundary for bitops 4c55abe4f8d2 f2fs: remove unneeded set_cold_node() 30654507e0a2 f2fs: add nowait aio support d909e9410634 f2fs: wrap all options with f2fs_sb_info.mount_opt 5738be52b3e8 f2fs: Don't overwrite all types of node to keep node chain 0bdeb167c843 f2fs: introduce mount option for fsync mode 6bc490f0eedc f2fs: fix to restore old mount option in ->remount_fs 0c9c3e034410 f2fs: wrap sb_rdonly with f2fs_readonly 6c6611223a79 f2fs: avoid selinux denial on CAP_SYS_RESOURCE 076a6f32fe5d f2fs: support hot file extension 58edcdbca67a f2fs: fix to avoid race in between atomic write and background GC 1e0aeb0af9ed f2fs: do gc in greedy mode for whole range if gc_urgent mode is set 10b2d001d6ac f2fs: issue discard aggressively in the gc_urgent mode a5052f32b940 f2fs: set readdir_ra by default 1aa536a624cc f2fs: add auto tuning for small devices 0ffdffc8f106 f2fs: add mount option for segment allocation policy b79829891249 f2fs: don't stop GC if GC is contended 766d2321697f f2fs: expose extension_list sysfs entry 98b329de5026 f2fs: fix to set KEEP_SIZE bit in f2fs_zero_range 4d409fa3346b f2fs: introduce sb_lock to make encrypt pwsalt update exclusive 1f6bac14c100 f2fs: remove redundant initialization of pointer 'p' 946aefc7545d f2fs: flush cp pack except cp pack 2 page at first e5081a52ac09 f2fs: clean up f2fs_sb_has_xxx functions a292477154b5 f2fs: remove redundant check of page type when submit bio 190e64a819df f2fs: fix to handle looped node chain during recovery 889d98087652 f2fs: handle quota for orphan inodes 92b12bb1a23e f2fs: support passing down write hints to block layer with F2FS policy 22fa74c2b097 f2fs: support passing down write hints given by users to block layer 180900373ec1 f2fs: fix to clear CP_TRIMMED_FLAG 0671fae134bb f2fs: support large nat bitmap eceb943d5d59 f2fs: fix to check extent cache in f2fs_drop_extent_tree 2e2a339c9853 f2fs: restrict inline_xattr_size configuration 41dda1164137 f2fs: fix heap mode to reset it back 39575737bb62 f2fs: fix potential corruption in area before F2FS_SUPER_OFFSET 7e0e7995ee97 fscrypt: fix build with pre-4.6 gcc versions 31d3279a4fca fscrypt: fix up fscrypt_fname_encrypted_size() for internal use 82bec888567b fscrypt: define fscrypt_fname_alloc_buffer() to be for presented names 168a90782888 fscrypt: calculate NUL-padding length in one place only 042ae9f4cfbf fscrypt: move fscrypt_symlink_data to fscrypt_private.h f9550c24c20e fscrypt: remove fscrypt_fname_usr_to_disk() 7ac4756a2474 f2fs: switch to fscrypt_get_symlink() 6b76f58e24bd f2fs: switch to fscrypt ->symlink() helper functions fd457d2c4e04 fscrypt: new helper function - fscrypt_get_symlink() a1cdacb7ae0d fscrypt: new helper functions for ->symlink() 7f43602f4d10 fscrypt: trim down fscrypt.h includes d9cadc11bdcf fscrypt: move fscrypt_is_dot_dotdot() to fs/crypto/fname.c e6fe930580cb fscrypt: move fscrypt_valid_enc_modes() to fscrypt_private.h efefa434f47e fscrypt: move fscrypt_operations declaration to fscrypt_supp.h 7ed178bc8ae9 fscrypt: split fscrypt_dummy_context_enabled() into supp/notsupp versions 3f16e09dadfb fscrypt: move fscrypt_ctx declaration to fscrypt_supp.h 8216a0b51a3b fscrypt: move fscrypt_info_cachep declaration to fscrypt_private.h dfe0b3b1b67f fscrypt: move fscrypt_control_page() to supp/notsupp headers 3a2c79177822 fscrypt: move fscrypt_has_encryption_key() to supp/notsupp headers Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2018-01-05 10:44:52 -08:00
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
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