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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-29 19:58:42 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-30 18:58:59 +0300 |
| commit | 8bb4f2535cf7c3e3aeaed8b3c7c7a116844c41db (patch) | |
| tree | 4d0c2001d6637b42bc12bd072b2a58740fb1eda5 /fs/f2fs/f2fs.h | |
| parent | d6290814b018aa9a81163b4c806935b315041833 (diff) | |
| download | linux-8bb4f2535cf7c3e3aeaed8b3c7c7a116844c41db.tar.xz | |
f2fs: issue discard commands proactively in high fs utilization
In the high utilization like over 80%, we don't expect huge # of large discard
commands, but do many small pending discards which affects FTL GCs a lot.
Let's issue them in that case.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e852ac9472c6..27231fe8a6b2 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -186,6 +186,7 @@ enum { #define DEF_MAX_DISCARD_LEN 512 /* Max. 2MB per discard */ #define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */ #define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */ +#define DEF_DISCARD_URGENT_UTIL 80 /* do more discard over 80% */ #define DEF_CP_INTERVAL 60 /* 60 secs */ #define DEF_IDLE_INTERVAL 5 /* 5 secs */ @@ -2777,8 +2778,6 @@ int f2fs_flush_device_cache(struct f2fs_sb_info *sbi); void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free); void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr); bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr); -void init_discard_policy(struct discard_policy *dpolicy, int discard_type, - unsigned int granularity); void drop_discard_cmd(struct f2fs_sb_info *sbi); void stop_discard_thread(struct f2fs_sb_info *sbi); bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi); |