* [PATCH 1/1] f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
@ 2017-08-09 9:27 sunqiuyang
2017-08-10 10:45 ` Chao Yu
0 siblings, 1 reply; 6+ messages in thread
From: sunqiuyang @ 2017-08-09 9:27 UTC (permalink / raw)
To: linux-kernel, linux-fsdevel, linux-f2fs-devel; +Cc: sunqiuyang
From: Qiuyang Sun <sunqiuyang@huawei.com>
Currently, the two flags F2FS_GET_BLOCK_[READ|DIO] are totally equivalent
and can be used interchangably in all scenarios they are involved in.
Neither of the flags is referenced in f2fs_map_blocks(), making them both
the default case. To remove the ambiguity, this patch merges both flags
into F2FS_GET_BLOCK_DEFAULT, and introduces an enum for all distinct flags.
Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
---
fs/f2fs/data.c | 4 ++--
fs/f2fs/f2fs.h | 13 +++++++------
fs/f2fs/file.c | 4 ++--
3 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index c43262d..67da4f6 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1044,7 +1044,7 @@ static int get_data_block_dio(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
return __get_data_block(inode, iblock, bh_result, create,
- F2FS_GET_BLOCK_DIO, NULL);
+ F2FS_GET_BLOCK_DEFAULT, NULL);
}
static int get_data_block_bmap(struct inode *inode, sector_t iblock,
@@ -1244,7 +1244,7 @@ static int f2fs_mpage_readpages(struct address_space *mapping,
map.m_len = last_block - block_in_file;
if (f2fs_map_blocks(inode, &map, 0,
- F2FS_GET_BLOCK_READ))
+ F2FS_GET_BLOCK_DEFAULT))
goto set_error_page;
}
got_it:
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index cea329f..2f20b6b 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -514,12 +514,13 @@ struct f2fs_map_blocks {
};
/* for flag in get_data_block */
-#define F2FS_GET_BLOCK_READ 0
-#define F2FS_GET_BLOCK_DIO 1
-#define F2FS_GET_BLOCK_FIEMAP 2
-#define F2FS_GET_BLOCK_BMAP 3
-#define F2FS_GET_BLOCK_PRE_DIO 4
-#define F2FS_GET_BLOCK_PRE_AIO 5
+enum {
+ F2FS_GET_BLOCK_DEFAULT,
+ F2FS_GET_BLOCK_FIEMAP,
+ F2FS_GET_BLOCK_BMAP,
+ F2FS_GET_BLOCK_PRE_DIO,
+ F2FS_GET_BLOCK_PRE_AIO,
+};
/*
* i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index e2b33b8..3eebd49 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2074,7 +2074,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
*/
while (map.m_lblk < pg_end) {
map.m_len = pg_end - map.m_lblk;
- err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
+ err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
if (err)
goto out;
@@ -2116,7 +2116,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
do_map:
map.m_len = pg_end - map.m_lblk;
- err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
+ err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
if (err)
goto clear_out;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 1/1] f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
2017-08-09 9:27 [PATCH 1/1] f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO] sunqiuyang
@ 2017-08-10 10:45 ` Chao Yu
0 siblings, 0 replies; 6+ messages in thread
From: Chao Yu @ 2017-08-10 10:45 UTC (permalink / raw)
To: sunqiuyang, linux-kernel, linux-fsdevel, linux-f2fs-devel
On 2017/8/9 17:27, sunqiuyang wrote:
> From: Qiuyang Sun <sunqiuyang@huawei.com>
>
> Currently, the two flags F2FS_GET_BLOCK_[READ|DIO] are totally equivalent
> and can be used interchangably in all scenarios they are involved in.
> Neither of the flags is referenced in f2fs_map_blocks(), making them both
> the default case. To remove the ambiguity, this patch merges both flags
> into F2FS_GET_BLOCK_DEFAULT, and introduces an enum for all distinct flags.
>
> Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/1] f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
2017-08-08 11:41 ` Sun Qiuyang
@ 2017-08-09 1:13 ` Chao Yu
0 siblings, 0 replies; 6+ messages in thread
From: Chao Yu @ 2017-08-09 1:13 UTC (permalink / raw)
To: Sun Qiuyang, linux-kernel, linux-fsdevel, linux-f2fs-devel
On 2017/8/8 19:41, Sun Qiuyang wrote:
>
>
>> On 2017/8/8 18:27, sunqiuyang wrote:
>>> From: Qiuyang Sun <sunqiuyang@huawei.com>
>>>
>>> Currently, the two flags F2FS_GET_BLOCK_[READ|DIO] are totally equivalent
>>> and can be used interchangably in all scenarios they are involved in. This
>>> patch deletes F2FS_GET_BLOCK_READ and uses F2FS_GET_BLOCK_DIO instead.
>>
>> Seems weird from readability point of view, so how about keeping
>> F2FS_GET_BLOCK_READ alive but sharing defined value with F2FS_GET_BLOCK_DIO?
>>
>> enum {
>> F2FS_GET_BLOCK_DIO,
>> F2FS_GET_BLOCK_READ = F2FS_GET_BLOCK_DIO,
>> F2FS_GET_BLOCK_FIEMAP,
>> ...
>> }
>>
>> Thanks,
> How about renaming both of them F2FS_GET_BLOCK_DEFAULT? Actually neither
> READ nor DIO is explicitly referenced in f2fs_map_blocks(); it is just
> the "default" case. We have no reason to limit the use of this flag to
> "read" or "direct IO" only.
Better. :)
Thanks,
>
> Thanks,
>>
>>>
>>> Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
>>> ---
>>> fs/f2fs/data.c | 2 +-
>>> fs/f2fs/f2fs.h | 1 -
>>> fs/f2fs/file.c | 4 ++--
>>> 3 files changed, 3 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
>>> index c43262d..e0a59bf 100644
>>> --- a/fs/f2fs/data.c
>>> +++ b/fs/f2fs/data.c
>>> @@ -1244,7 +1244,7 @@ static int f2fs_mpage_readpages(struct address_space *mapping,
>>> map.m_len = last_block - block_in_file;
>>>
>>> if (f2fs_map_blocks(inode, &map, 0,
>>> - F2FS_GET_BLOCK_READ))
>>> + F2FS_GET_BLOCK_DIO))
>>> goto set_error_page;
>>> }
>>> got_it:
>>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>>> index cea329f..0593ca7 100644
>>> --- a/fs/f2fs/f2fs.h
>>> +++ b/fs/f2fs/f2fs.h
>>> @@ -514,7 +514,6 @@ struct f2fs_map_blocks {
>>> };
>>>
>>> /* for flag in get_data_block */
>>> -#define F2FS_GET_BLOCK_READ 0
>>> #define F2FS_GET_BLOCK_DIO 1
>>> #define F2FS_GET_BLOCK_FIEMAP 2
>>> #define F2FS_GET_BLOCK_BMAP 3
>>> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
>>> index e2b33b8..8271cb5 100644
>>> --- a/fs/f2fs/file.c
>>> +++ b/fs/f2fs/file.c
>>> @@ -2074,7 +2074,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
>>> */
>>> while (map.m_lblk < pg_end) {
>>> map.m_len = pg_end - map.m_lblk;
>>> - err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
>>> + err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
>>> if (err)
>>> goto out;
>>>
>>> @@ -2116,7 +2116,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
>>>
>>> do_map:
>>> map.m_len = pg_end - map.m_lblk;
>>> - err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
>>> + err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
>>> if (err)
>>> goto clear_out;
>>>
>>>
>>
>>
>> .
>>
>
>
> .
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/1] f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
2017-08-08 11:24 ` Chao Yu
@ 2017-08-08 11:41 ` Sun Qiuyang
2017-08-09 1:13 ` Chao Yu
0 siblings, 1 reply; 6+ messages in thread
From: Sun Qiuyang @ 2017-08-08 11:41 UTC (permalink / raw)
To: Chao Yu, linux-kernel, linux-fsdevel, linux-f2fs-devel
> On 2017/8/8 18:27, sunqiuyang wrote:
>> From: Qiuyang Sun <sunqiuyang@huawei.com>
>>
>> Currently, the two flags F2FS_GET_BLOCK_[READ|DIO] are totally equivalent
>> and can be used interchangably in all scenarios they are involved in. This
>> patch deletes F2FS_GET_BLOCK_READ and uses F2FS_GET_BLOCK_DIO instead.
>
> Seems weird from readability point of view, so how about keeping
> F2FS_GET_BLOCK_READ alive but sharing defined value with F2FS_GET_BLOCK_DIO?
>
> enum {
> F2FS_GET_BLOCK_DIO,
> F2FS_GET_BLOCK_READ = F2FS_GET_BLOCK_DIO,
> F2FS_GET_BLOCK_FIEMAP,
> ...
> }
>
> Thanks,
How about renaming both of them F2FS_GET_BLOCK_DEFAULT? Actually neither
READ nor DIO is explicitly referenced in f2fs_map_blocks(); it is just
the "default" case. We have no reason to limit the use of this flag to
"read" or "direct IO" only.
Thanks,
>
>>
>> Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
>> ---
>> fs/f2fs/data.c | 2 +-
>> fs/f2fs/f2fs.h | 1 -
>> fs/f2fs/file.c | 4 ++--
>> 3 files changed, 3 insertions(+), 4 deletions(-)
>>
>> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
>> index c43262d..e0a59bf 100644
>> --- a/fs/f2fs/data.c
>> +++ b/fs/f2fs/data.c
>> @@ -1244,7 +1244,7 @@ static int f2fs_mpage_readpages(struct address_space *mapping,
>> map.m_len = last_block - block_in_file;
>>
>> if (f2fs_map_blocks(inode, &map, 0,
>> - F2FS_GET_BLOCK_READ))
>> + F2FS_GET_BLOCK_DIO))
>> goto set_error_page;
>> }
>> got_it:
>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>> index cea329f..0593ca7 100644
>> --- a/fs/f2fs/f2fs.h
>> +++ b/fs/f2fs/f2fs.h
>> @@ -514,7 +514,6 @@ struct f2fs_map_blocks {
>> };
>>
>> /* for flag in get_data_block */
>> -#define F2FS_GET_BLOCK_READ 0
>> #define F2FS_GET_BLOCK_DIO 1
>> #define F2FS_GET_BLOCK_FIEMAP 2
>> #define F2FS_GET_BLOCK_BMAP 3
>> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
>> index e2b33b8..8271cb5 100644
>> --- a/fs/f2fs/file.c
>> +++ b/fs/f2fs/file.c
>> @@ -2074,7 +2074,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
>> */
>> while (map.m_lblk < pg_end) {
>> map.m_len = pg_end - map.m_lblk;
>> - err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
>> + err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
>> if (err)
>> goto out;
>>
>> @@ -2116,7 +2116,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
>>
>> do_map:
>> map.m_len = pg_end - map.m_lblk;
>> - err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
>> + err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
>> if (err)
>> goto clear_out;
>>
>>
>
>
> .
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/1] f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
2017-08-08 10:27 sunqiuyang
@ 2017-08-08 11:24 ` Chao Yu
2017-08-08 11:41 ` Sun Qiuyang
0 siblings, 1 reply; 6+ messages in thread
From: Chao Yu @ 2017-08-08 11:24 UTC (permalink / raw)
To: sunqiuyang, linux-kernel, linux-fsdevel, linux-f2fs-devel
On 2017/8/8 18:27, sunqiuyang wrote:
> From: Qiuyang Sun <sunqiuyang@huawei.com>
>
> Currently, the two flags F2FS_GET_BLOCK_[READ|DIO] are totally equivalent
> and can be used interchangably in all scenarios they are involved in. This
> patch deletes F2FS_GET_BLOCK_READ and uses F2FS_GET_BLOCK_DIO instead.
Seems weird from readability point of view, so how about keeping
F2FS_GET_BLOCK_READ alive but sharing defined value with F2FS_GET_BLOCK_DIO?
enum {
F2FS_GET_BLOCK_DIO,
F2FS_GET_BLOCK_READ = F2FS_GET_BLOCK_DIO,
F2FS_GET_BLOCK_FIEMAP,
...
}
Thanks,
>
> Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
> ---
> fs/f2fs/data.c | 2 +-
> fs/f2fs/f2fs.h | 1 -
> fs/f2fs/file.c | 4 ++--
> 3 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index c43262d..e0a59bf 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -1244,7 +1244,7 @@ static int f2fs_mpage_readpages(struct address_space *mapping,
> map.m_len = last_block - block_in_file;
>
> if (f2fs_map_blocks(inode, &map, 0,
> - F2FS_GET_BLOCK_READ))
> + F2FS_GET_BLOCK_DIO))
> goto set_error_page;
> }
> got_it:
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index cea329f..0593ca7 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -514,7 +514,6 @@ struct f2fs_map_blocks {
> };
>
> /* for flag in get_data_block */
> -#define F2FS_GET_BLOCK_READ 0
> #define F2FS_GET_BLOCK_DIO 1
> #define F2FS_GET_BLOCK_FIEMAP 2
> #define F2FS_GET_BLOCK_BMAP 3
> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> index e2b33b8..8271cb5 100644
> --- a/fs/f2fs/file.c
> +++ b/fs/f2fs/file.c
> @@ -2074,7 +2074,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
> */
> while (map.m_lblk < pg_end) {
> map.m_len = pg_end - map.m_lblk;
> - err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
> + err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
> if (err)
> goto out;
>
> @@ -2116,7 +2116,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
>
> do_map:
> map.m_len = pg_end - map.m_lblk;
> - err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
> + err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
> if (err)
> goto clear_out;
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/1] f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
@ 2017-08-08 10:27 sunqiuyang
2017-08-08 11:24 ` Chao Yu
0 siblings, 1 reply; 6+ messages in thread
From: sunqiuyang @ 2017-08-08 10:27 UTC (permalink / raw)
To: linux-kernel, linux-fsdevel, linux-f2fs-devel; +Cc: sunqiuyang
From: Qiuyang Sun <sunqiuyang@huawei.com>
Currently, the two flags F2FS_GET_BLOCK_[READ|DIO] are totally equivalent
and can be used interchangably in all scenarios they are involved in. This
patch deletes F2FS_GET_BLOCK_READ and uses F2FS_GET_BLOCK_DIO instead.
Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
---
fs/f2fs/data.c | 2 +-
fs/f2fs/f2fs.h | 1 -
fs/f2fs/file.c | 4 ++--
3 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index c43262d..e0a59bf 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1244,7 +1244,7 @@ static int f2fs_mpage_readpages(struct address_space *mapping,
map.m_len = last_block - block_in_file;
if (f2fs_map_blocks(inode, &map, 0,
- F2FS_GET_BLOCK_READ))
+ F2FS_GET_BLOCK_DIO))
goto set_error_page;
}
got_it:
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index cea329f..0593ca7 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -514,7 +514,6 @@ struct f2fs_map_blocks {
};
/* for flag in get_data_block */
-#define F2FS_GET_BLOCK_READ 0
#define F2FS_GET_BLOCK_DIO 1
#define F2FS_GET_BLOCK_FIEMAP 2
#define F2FS_GET_BLOCK_BMAP 3
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index e2b33b8..8271cb5 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2074,7 +2074,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
*/
while (map.m_lblk < pg_end) {
map.m_len = pg_end - map.m_lblk;
- err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
+ err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
if (err)
goto out;
@@ -2116,7 +2116,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
do_map:
map.m_len = pg_end - map.m_lblk;
- err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
+ err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
if (err)
goto clear_out;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2017-08-10 10:45 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-08-09 9:27 [PATCH 1/1] f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO] sunqiuyang
2017-08-10 10:45 ` Chao Yu
-- strict thread matches above, loose matches on Subject: below --
2017-08-08 10:27 sunqiuyang
2017-08-08 11:24 ` Chao Yu
2017-08-08 11:41 ` Sun Qiuyang
2017-08-09 1:13 ` Chao Yu
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).