diff options
| author | Shuoran Liu <liushuoran@huawei.com> | 2016-01-27 09:57:30 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-02-22 16:07:23 -0800 |
| commit | 8f1dbbbbdfe9bada7e2f8041e07c6373f787c043 (patch) | |
| tree | 25fb006ca5bc2f960722210241c0f9e14af9c0d1 /fs/f2fs/f2fs.h | |
| parent | 6fe2bc95616650104020e821ea84c086cce1e290 (diff) | |
| download | op-kernel-dev-8f1dbbbbdfe9bada7e2f8041e07c6373f787c043.zip op-kernel-dev-8f1dbbbbdfe9bada7e2f8041e07c6373f787c043.tar.gz | |
f2fs: introduce lifetime write IO statistics
This patch introduces lifetime IO write statistics exposed to the sysfs interface.
The write IO amount is obtained from block layer, accumulated in the file system and
stored in the hot node summary of checkpoint.
Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Signed-off-by: Pengyang Hou <houpengyang@huawei.com>
[Jaegeuk Kim: add sysfs documentation]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 4e7eab9..5b6fd54 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -846,8 +846,19 @@ struct f2fs_sb_info { struct list_head s_list; struct mutex umount_mutex; unsigned int shrinker_run_no; + + /* For write statistics */ + u64 sectors_written_start; + u64 kbytes_written; }; +/* For write statistics. Suppose sector size is 512 bytes, + * and the return value is in kbytes. s is of struct f2fs_sb_info. + */ +#define BD_PART_WRITTEN(s) \ +(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \ + s->sectors_written_start) >> 1) + static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type) { sbi->last_time[type] = jiffies; |
