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f2fs: add node_io_flag for bio flags likewise data_io_flag 

This patch adds another way to attach bio flags to node writes.

Description:   Give a way to attach REQ_META|FUA to node writes
               given temperature-based bits. Now the bits indicate:
               *      REQ_META     |      REQ_FUA      |
               *    5 |    4 |   3 |    2 |    1 |   0 |
               * Cold | Warm | Hot | Cold | Warm | Hot |

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2020-06-04 11:49:43 -07:00
parent bc67c5d0ce
commit 32b6aba85c
4 changed files with 27 additions and 9 deletions
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9
Documentation/ABI/testing/sysfs-fs-f2fs
View File

@ -333,6 +333,15 @@ Description: Give a way to attach REQ_META|FUA to data writes
* 5 | 4 | 3 | 2 | 1 | 0 |
* Cold | Warm | Hot | Cold | Warm | Hot |
What: /sys/fs/f2fs/<disk>/node_io_flag
Date: June 2020
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description: Give a way to attach REQ_META|FUA to node writes
given temperature-based bits. Now the bits indicate:
* REQ_META | REQ_FUA |
* 5 | 4 | 3 | 2 | 1 | 0 |
* Cold | Warm | Hot | Cold | Warm | Hot |
What: /sys/fs/f2fs/<disk>/iostat_period_ms
Date: April 2020
Contact: "Daeho Jeong" <daehojeong@google.com>

24
fs/f2fs/data.c
View File

@ -514,22 +514,28 @@ 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)
static void __attach_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;
unsigned int io_flag, fua_flag, meta_flag;
if (fio->type == DATA)
io_flag = sbi->data_io_flag;
else if (fio->type == NODE)
io_flag = sbi->node_io_flag;
else
return;
fua_flag = io_flag & temp_mask;
meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask;
/*
* data io flag bits per temp:
* data/node 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)
@ -543,7 +549,7 @@ static void __submit_merged_bio(struct f2fs_bio_info *io)
if (!io->bio)
return;
__attach_data_io_flag(fio);
__attach_io_flag(fio);
bio_set_op_attrs(io->bio, fio->op, fio->op_flags);
if (is_read_io(fio->op))

1
fs/f2fs/f2fs.h
View File

@ -1568,6 +1568,7 @@ struct f2fs_sb_info {
/* to attach REQ_META|REQ_FUA flags */
unsigned int data_io_flag;
unsigned int node_io_flag;
/* For sysfs suppport */
struct kobject s_kobj;

2
fs/f2fs/sysfs.c
View File

@ -554,6 +554,7 @@ F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
#endif
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, data_io_flag, data_io_flag);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, node_io_flag, node_io_flag);
F2FS_GENERAL_RO_ATTR(dirty_segments);
F2FS_GENERAL_RO_ATTR(free_segments);
F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
@ -635,6 +636,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(inject_type),
#endif
ATTR_LIST(data_io_flag),
ATTR_LIST(node_io_flag),
ATTR_LIST(dirty_segments),
ATTR_LIST(free_segments),
ATTR_LIST(unusable),