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f2fs: introduce sysfs/data_io_flag to attach REQ_META/FUA

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This patch introduces a way to attach REQ_META/FUA explicitly
to all the data writes given temperature.

-> attach REQ_FUA to Hot Data writes

-> attach REQ_FUA to Hot|Warm Data writes

-> attach REQ_FUA to Hot|Warm|Cold Data writes

-> attach REQ_FUA to Hot|Warm|Cold Data writes as well as
          REQ_META to Hot Data writes

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2020-04-02 09:32:35 -07:00
parent 63bef48fd6
commit da9953b729
4 changed files with 37 additions and 1 deletions
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23
fs/f2fs/data.c
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@@ -513,6 +513,28 @@ void f2fs_submit_bio(struct f2fs_sb_info *sbi,
__submit_bio(sbi, bio, type);
}
static void __attach_data_io_flag(struct f2fs_io_info *fio)
{
struct f2fs_sb_info *sbi = fio->sbi;
unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1;
unsigned int fua_flag = sbi->data_io_flag & temp_mask;
unsigned int meta_flag = (sbi->data_io_flag >> NR_TEMP_TYPE) &
temp_mask;
/*
* data io flag bits per temp:
* REQ_META | REQ_FUA |
* 5 | 4 | 3 | 2 | 1 | 0 |
* Cold | Warm | Hot | Cold | Warm | Hot |
*/
if (fio->type != DATA)
return;
if ((1 << fio->temp) & meta_flag)
fio->op_flags |= REQ_META;
if ((1 << fio->temp) & fua_flag)
fio->op_flags |= REQ_FUA;
}
static void __submit_merged_bio(struct f2fs_bio_info *io)
{
struct f2fs_io_info *fio = &io->fio;
@@ -520,6 +542,7 @@ static void __submit_merged_bio(struct f2fs_bio_info *io)
if (!io->bio)
return;
__attach_data_io_flag(fio);
bio_set_op_attrs(io->bio, fio->op, fio->op_flags);
if (is_read_io(fio->op))