From: Hyunchul Lee
Because xattr_permission already checks CAP_SYS_ADMIN
capability, we don't need to check it.
Signed-off-by: Hyunchul Lee
---
fs/f2fs/xattr.c | 6 --
1 file changed, 6 deletions(-)
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index 708271871f94..4b34244dcc69 1
From: Hyunchul Lee
This patch adds nowait aio support[1].
Return EAGAIN if any of the following checks fail for direct I/O:
- i_rwsem is not lockable
- Blocks are not allocated at the write location
And xfstests generic/471 is passed.
[1]: 6be96d "Introduce RWF_NOWAI
From: Hyunchul Lee
This patch adds nowait aio support[1].
Return EAGAIN if any of the following checks fail for direct I/O:
- i_rwsem is not lockable
- Blocks are not allocated at the write location
And xfstests generic/471 is passed.
[1]: 6be96d "Introduce RWF_NOWAI
From: Hyunchul Lee
Add the 'whint_mode' mount option that controls which write
hints are passed down to block layer. There are "off" and
"user-based" mode. The default mode is "off".
1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
2) whint_
From: Hyunchul Lee
Add 'whint_mode=fs-based' mount option. In this mode, F2FS passes
down write hints with its policy.
* whint_mode=fs-based. F2FS passes down hints with its policy.
User F2FS
From: Hyunchul Lee
Signed-off-by: Hyunchul Lee
---
Documentation/filesystems/f2fs.txt | 6 ++
1 file changed, 6 insertions(+)
diff --git a/Documentation/filesystems/f2fs.txt
b/Documentation/filesystems/f2fs.txt
index 13c2ff0..414a160 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b
From: Hyunchul Lee
Changes since version 1:
- Set 'whint_mode' to off if 'active_logs' is two or four
- Minor fixes suggested by Chao
This set implements passing down write hints to block layer with the
following mapping. This mapping equals the conclusion from discussio
On 01/26/2018 11:10 AM, Chao Yu wrote:
> On 2018/1/26 7:46, Hyunchul Lee wrote:
>> On 01/25/2018 05:01 PM, Chao Yu wrote:
>>> Hi Hyunchul,
>>>
>>> On 2018/1/25 10:47, Hyunchul Lee wrote:
>>>> Hi Chao,
>>>>
>>>> On 01/25/20
On 01/25/2018 05:01 PM, Chao Yu wrote:
> Hi Hyunchul,
>
> On 2018/1/25 10:47, Hyunchul Lee wrote:
>> Hi Chao,
>>
>> On 01/25/2018 12:32 AM, Chao Yu wrote:
>>> On 2018/1/22 18:49, Hyunchul Lee wrote:
>>>> From: Hyunchul Lee
>>>>
>
Hi Chao,
On 01/25/2018 12:32 AM, Chao Yu wrote:
> On 2018/1/22 18:49, Hyunchul Lee wrote:
>> From: Hyunchul Lee
>>
>> Add the 'whint_mode' mount option that controls which write
>> hints are passed down to block layer. There are "off" and
>>
From: Hyunchul Lee
This set implements passing down write hints to block layer with the
following mapping. This mapping equals the conclusion from discussion in
the link, https://sourceforge.net/p/linux-f2fs/mailman/message/36170969/
But there are two exceptions. (1) the 'iohint_mode&#
From: Hyunchul Lee
Add the 'whint_mode' mount option that controls which write
hints are passed down to block layer. There are "off" and
"user-based" mode. The default mode is "off".
1) whint_mode=user-based. F2FS tries to pass down hints giv
From: Hyunchul Lee
Add 'whint_mode=fs-based' mount option. In this mode, F2FS passes
down write hints with its policy.
* whint_mode=fs-based. F2FS passes down hints with its policy.
User F2FS
From: Hyunchul Lee
Signed-off-by: Hyunchul Lee
---
Documentation/filesystems/f2fs.txt | 6 ++
1 file changed, 6 insertions(+)
diff --git a/Documentation/filesystems/f2fs.txt
b/Documentation/filesystems/f2fs.txt
index 13c2ff0..414a160 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b
Hi Jaegeuk,
On 12/28/2017 12:26 PM, Jaegeuk Kim wrote:
> On 12/23, Chao Yu wrote:
>> On 2017/12/15 10:06, Jaegeuk Kim wrote:
>>> On 12/14, Hyunchul Lee wrote:
>>>> Hi Jaegeuk,
>>>>
>>>> I need your comment about the fs_iohint mount option.
&
Hi Jaegeuk,
Agreed. If Chao agrees with this policy, I will implement it.
Thanks for the comment.
On 12/15/2017 11:06 AM, Jaegeuk Kim wrote:
> On 12/14, Hyunchul Lee wrote:
>> Hi Jaegeuk,
>>
>> I need your comment about the fs_iohint mount option.
>>
>> a) w/o f
for users, and LIFE_SHORT and LIFE_EXTREME is converted to different
hints by F2FS.
Thanks.
On 12/12/2017 11:45 AM, Chao Yu wrote:
> Hi Hyunchul,
>
> On 2017/12/12 10:15, Hyunchul Lee wrote:
>> Hi Chao,
>>
>> On 12/11/2017 10:15 PM, Chao Yu wrote:
>>> Hi
Hi Chao,
On 12/11/2017 10:15 PM, Chao Yu wrote:
> Hi Hyunchul,
>
> On 2017/12/1 16:28, Hyunchul Lee wrote:
>> Hi Chao,
>>
>> On 11/30/2017 04:06 PM, Chao Yu wrote:
>>> Hi Hyunchul,
>>>
>>> On 2017/11/28 8:23, Hyunchul Lee wrote:
>>&g
Hi Jaegeuk,
On 12/01/2017 04:28 PM, Jaegeuk Kim wrote:
> On 11/30, Chao Yu wrote:
>> On 2017/11/28 8:23, Hyunchul Lee wrote:
>>> From: Hyunchul Lee
>>>
>>> This implements which hint is passed down to block layer
>>> for datas from th
Hi Chao,
On 11/30/2017 04:06 PM, Chao Yu wrote:
> Hi Hyunchul,
>
> On 2017/11/28 8:23, Hyunchul Lee wrote:
>> From: Hyunchul Lee
>>
>> This implements which hint is passed down to block layer
>> for datas from the specific segment type.
>>
&g
From: Hyunchul Lee
This implements which hint is passed down to block layer
for direct write.
(allocated
file hintsegment type) io hint
--
WRITE_LIFE_SHORT HOT_DATAWRITE_LIFE_MEDIUM
WRITE_LIFE_EXTREME
From: Hyunchul Lee
When blocks are allocated for direct write, select the type of
segment using the kiocb hint. But if an inode has FI_NO_ALLOC,
use the inode hint.
Signed-off-by: Hyunchul Lee
---
v2:
- Add a new member, m_seg_type to struct f2fs_map_blocks.
- Assign the segment type to
From: Hyunchul Lee
This implements which hint is passed down to block layer
for datas from the specific segment type.
segment type hints
-
COLD_NODE & COLD_DATAWRITE_LIFE_EXTREME
WARM_
On 11/18/2017 03:53 AM, Jaegeuk Kim wrote:
> ...
>>>>>>>>>>>>>>>>> From: Hyunchul Lee
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Using write hi
On 11/16/2017 12:58 PM, Jaegeuk Kim wrote:
> On 11/16, Chao Yu wrote:
>> On 2017/11/16 8:56, Hyunchul Lee wrote:
>>>
>>> On 11/16/2017 01:27 AM, Jaegeuk Kim wrote:
>>>> On 11/14, Chao Yu wrote:
>>>>> On 2017/11/14 12:20, Jaegeuk Kim wrote:
>
On 11/16/2017 01:27 AM, Jaegeuk Kim wrote:
> On 11/14, Chao Yu wrote:
>> On 2017/11/14 12:20, Jaegeuk Kim wrote:
>>> On 11/13, Hyunchul Lee wrote:
>>>> On 11/13/2017 10:59 AM, Chao Yu wrote:
>>>>> On 2017/11/13 9:35, Hyunchul Lee wrote:
>>>
On 11/13/2017 10:59 AM, Chao Yu wrote:
> On 2017/11/13 9:35, Hyunchul Lee wrote:
>> On 11/13/2017 10:26 AM, Chao Yu wrote:
>>> On 2017/11/13 8:24, Hyunchul Lee wrote:
>>>> On 11/10/2017 03:42 PM, Chao Yu wrote:
>>>>> On 2017/11/10 8:23, Hyunchul Lee wro
On 11/13/2017 10:24 AM, Chao Yu wrote:
> On 2017/11/13 8:07, Hyunchul Lee wrote:
>> On 11/11/2017 09:38 AM, Chao Yu wrote:
>>> On 2017/11/9 13:51, Hyunchul Lee wrote:
>>>> From: Hyunchul Lee
>>>>
>>>> Select the type of the segment using
On 11/13/2017 10:26 AM, Chao Yu wrote:
> On 2017/11/13 8:24, Hyunchul Lee wrote:
>> On 11/10/2017 03:42 PM, Chao Yu wrote:
>>> On 2017/11/10 8:23, Hyunchul Lee wrote:
>>>> Hello, Chao
>>>>
>>>> On 11/09/2017 06:12 PM, Chao Yu wrote:
>
On 11/10/2017 03:42 PM, Chao Yu wrote:
> On 2017/11/10 8:23, Hyunchul Lee wrote:
>> Hello, Chao
>>
>> On 11/09/2017 06:12 PM, Chao Yu wrote:
>>> On 2017/11/9 13:51, Hyunchul Lee wrote:
>>>> From: Hyunchul Lee
>>>>
>>>> Using
On 11/11/2017 09:38 AM, Chao Yu wrote:
> On 2017/11/9 13:51, Hyunchul Lee wrote:
>> From: Hyunchul Lee
>>
>> Select the type of the segment using write hints, when blocks are
>> allocated for direct write.
>>
>> There are unhandled corner cases. Hints are
Hello, Chao
On 11/09/2017 06:12 PM, Chao Yu wrote:
> On 2017/11/9 13:51, Hyunchul Lee wrote:
>> From: Hyunchul Lee
>>
>> Using write hints[1], applications can inform the life time of the data
>> written to devices. and this[2] reported that the write hints patch
>
From: Hyunchul Lee
Using write hints[1], applications can inform the life time of the data
written to devices. and this[2] reported that the write hints patch
decreased writes in NAND by 25%.
This hints help F2FS to determine the followings.
1) the segment types where the data will be written
From: Hyunchul Lee
Select the type of the segment using write hints, when blocks are
allocated for direct write.
There are unhandled corner cases. Hints are not applied in
in-place update. And if the blocks of a file is not pre-allocated
because of the invalid user buffer, CURSEG_WARM_DATA
From: Hyunchul Lee
Write hints helps F2FS to determine which type of segments would be
selected for buffered write.
This patch implements the mapping from write hints to segment types
as shown below.
hints segment type
-
WRITE_LIFE_SHORT
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