The current pending_discard attr just only shows the discard_cmd_cnt information. More discard status can be shown so that we can check them through sysfs when needed.
Signed-off-by: Zhiguo Niu <[email protected]> --- changes of v2: Improve the patch according to Chao's suggestions. changes of v3: Add a blank line for easy reading. changes of v4: Split to three entries --- --- Documentation/ABI/testing/sysfs-fs-f2fs | 15 +++++++++++++++ fs/f2fs/sysfs.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 48 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 4f1d4e6..606a298 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -159,6 +159,21 @@ Date: November 2021 Contact: "Jaegeuk Kim" <[email protected]> Description: Shows the number of pending discard commands in the queue. +What: /sys/fs/f2fs/<disk>/issued_discard +Date: December 2023 +Contact: "Zhiguo Niu" <[email protected]> +Description: Shows the number of issued discard. + +What: /sys/fs/f2fs/<disk>/queued_discard +Date: December 2023 +Contact: "Zhiguo Niu" <[email protected]> +Description: Shows the number of queued discard. + +What: /sys/fs/f2fs/<disk>/undiscard_blks +Date: December 2023 +Contact: "Zhiguo Niu" <[email protected]> +Description: Shows the total number of undiscard blocks. + What: /sys/fs/f2fs/<disk>/max_victim_search Date: January 2014 Contact: "Jaegeuk Kim" <[email protected]> diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 7099ffa..666efdd 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -143,6 +143,33 @@ static ssize_t pending_discard_show(struct f2fs_attr *a, &SM_I(sbi)->dcc_info->discard_cmd_cnt)); } +static ssize_t issued_discard_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (!SM_I(sbi)->dcc_info) + return -EINVAL; + return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read( + &SM_I(sbi)->dcc_info->issued_discard)); +} + +static ssize_t queued_discard_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (!SM_I(sbi)->dcc_info) + return -EINVAL; + return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read( + &SM_I(sbi)->dcc_info->queued_discard)); +} + +static ssize_t undiscard_blks_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (!SM_I(sbi)->dcc_info) + return -EINVAL; + return sysfs_emit(buf, "%u\n", + SM_I(sbi)->dcc_info->undiscard_blks); +} + static ssize_t gc_mode_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { @@ -1025,6 +1052,9 @@ static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a, F2FS_GENERAL_RO_ATTR(mounted_time_sec); F2FS_GENERAL_RO_ATTR(main_blkaddr); F2FS_GENERAL_RO_ATTR(pending_discard); +F2FS_GENERAL_RO_ATTR(issued_discard); +F2FS_GENERAL_RO_ATTR(queued_discard); +F2FS_GENERAL_RO_ATTR(undiscard_blks); F2FS_GENERAL_RO_ATTR(gc_mode); #ifdef CONFIG_F2FS_STAT_FS F2FS_GENERAL_RO_ATTR(moved_blocks_background); @@ -1084,6 +1114,9 @@ static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a, ATTR_LIST(max_ordered_discard), ATTR_LIST(discard_io_aware), ATTR_LIST(pending_discard), + ATTR_LIST(issued_discard), + ATTR_LIST(queued_discard), + ATTR_LIST(undiscard_blks), ATTR_LIST(gc_mode), ATTR_LIST(ipu_policy), ATTR_LIST(min_ipu_util), -- 1.9.1 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
