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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-01-08 16:57:48 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-01-11 15:56:37 -0800 |
| commit | d0239e1bf5204d602281f93c01d46bcf3531098d (patch) | |
| tree | e95f1b3567398de0dbe532689671050325e79eb5 /fs/f2fs/f2fs.h | |
| parent | 6beceb5427aa8731f958d2484e0fd8ff21d604dc (diff) | |
| download | linux-d0239e1bf5204d602281f93c01d46bcf3531098d.tar.bz2 | |
f2fs: detect idle time depending on user behavior
This patch adds last time that user requested filesystem operations.
This information is used to detect whether system is idle or not later.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 5bbb6a407e79..4331b9fe6f27 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -21,6 +21,7 @@ #include <linux/sched.h> #include <linux/vmalloc.h> #include <linux/bio.h> +#include <linux/blkdev.h> #ifdef CONFIG_F2FS_CHECK_FS #define f2fs_bug_on(sbi, condition) BUG_ON(condition) @@ -126,6 +127,7 @@ enum { #define BATCHED_TRIM_BLOCKS(sbi) \ (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg) #define DEF_CP_INTERVAL 60 /* 60 secs */ +#define DEF_IDLE_INTERVAL 120 /* 2 mins */ struct cp_control { int reason; @@ -723,6 +725,7 @@ enum { enum { CP_TIME, + REQ_TIME, MAX_TIME, }; @@ -856,6 +859,18 @@ static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type) return time_after(jiffies, sbi->last_time[type] + interval); } +static inline bool is_idle(struct f2fs_sb_info *sbi) +{ + struct block_device *bdev = sbi->sb->s_bdev; + struct request_queue *q = bdev_get_queue(bdev); + struct request_list *rl = &q->root_rl; + + if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC]) + return 0; + + return f2fs_time_over(sbi, REQ_TIME); +} + /* * Inline functions */ |