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f2fs: show # of on-going flush and discard bios

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This patch adds stat information for flush and discard commands.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2017-01-11 10:20:04 -08:00
parent 1546996348
commit dcc9165dbf
3 changed files with 17 additions and 3 deletions
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6
fs/f2fs/segment.c
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@@ -653,6 +653,9 @@ static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *d
{
int err = dc->bio->bi_error;
if (dc->state == D_DONE)
atomic_dec(&(SM_I(sbi)->dcc_info->submit_discard));
if (err == -EOPNOTSUPP)
err = 0;
@@ -678,6 +681,7 @@ void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
if (dc->state == D_PREP) {
dc->state = D_SUBMIT;
submit_bio(dc->bio);
atomic_inc(&dcc->submit_discard);
}
wait_for_completion_io(&dc->wait);
@@ -723,6 +727,7 @@ repeat:
if (dc->state == D_PREP) {
dc->state = D_SUBMIT;
submit_bio(dc->bio);
atomic_inc(&dcc->submit_discard);
if (iter++ > DISCARD_ISSUE_RATE)
break;
} else if (dc->state == D_DONE) {
@@ -1049,6 +1054,7 @@ int create_discard_cmd_control(struct f2fs_sb_info *sbi)
INIT_LIST_HEAD(&dcc->discard_entry_list);
INIT_LIST_HEAD(&dcc->discard_cmd_list);
mutex_init(&dcc->cmd_lock);
atomic_set(&dcc->submit_discard, 0);
dcc->nr_discards = 0;
dcc->max_discards = 0;