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f2fs: count discard command entry

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Adds to count discard command entry and show the number in debugfs,
also fix to add cost of discard command cache into total comsumed
memory footprint.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2017-03-25 17:19:59 +08:00
committed by Jaegeuk Kim
parent 8b8dd65f72
commit 5f32366a29
3 changed files with 15 additions and 3 deletions
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4
fs/f2fs/segment.c
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@@ -693,6 +693,8 @@ static void __add_discard_cmd(struct f2fs_sb_info *sbi,
mutex_lock(&dcc->cmd_lock);
list_add_tail(&dc->list, cmd_list);
mutex_unlock(&dcc->cmd_lock);
atomic_inc(&dcc->discard_cmd_cnt);
}
static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *dc)
@@ -708,6 +710,7 @@ static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *d
"Issue discard failed, ret: %d", dc->error);
list_del(&dc->list);
kmem_cache_free(discard_cmd_slab, dc);
atomic_dec(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
}
static void f2fs_submit_discard_endio(struct bio *bio)
@@ -1145,6 +1148,7 @@ static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
mutex_init(&dcc->cmd_lock);
atomic_set(&dcc->issued_discard, 0);
atomic_set(&dcc->issing_discard, 0);
atomic_set(&dcc->discard_cmd_cnt, 0);
dcc->nr_discards = 0;
dcc->max_discards = 0;