the upper applications more IO opportunities, these
applications are not blocked for too long at writing files.
Signed-off-by: Gang He
---
fs/ocfs2/alloc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 4c1b90442d6f..2cf9321919b5 100644
owner: root
group: root
user::rw-
group::r--
mask::r--
other::r--
The latest acl record("u:ivan:rw") cannot be returned via getfacl
command until remounting.
Signed-off-by: Gang He
---
fs/ocfs2/acl.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/a
Hello Joseph,
Thank for your taking the time to review the patch.
Please see my comments inline.
> -Original Message-
> From: Joseph Qi [mailto:joseph...@linux.alibaba.com]
> Sent: 2020年4月27日 17:48
> To: Gang He ; m...@fasheh.com; jl...@evilplan.org
> Cc: linux-kernel@
Hello Randy and Andrew,
>>> On 6/13/2019 at 9:18 am, in message
<20190612181813.48ad05832e05f767e7116...@linux-foundation.org>, Andrew Morton
wrote:
> On Wed, 12 Jun 2019 07:15:30 -0700 Randy Dunlap wrote:
>
>> On 6/11/19 4:59 PM, a...@linux-foundation.org wrote:
>> > The mm-of-the-moment
Hello Joseph,
>>> On 6/12/2019 at 3:03 pm, in message
, Joseph Qi
wrote:
> Hi Gang,
>
> On 19/6/11 09:54, Gang He wrote:
>> ocfs2 file system uses locking_state file under debugfs to dump
>> each ocfs2 file system's dlm lock resources, but the users ever
>
record.
Compared with v1, the main change is to use wall time in
microsecond for last pr/ex unlock time.
Signed-off-by: Gang He
Reviewed-by: Joseph Qi
---
fs/ocfs2/dlmglue.c | 18 +++---
fs/ocfs2/ocfs2.h | 1 +
2 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/fs
, ocfs2_dlm_init_debug() returns directly with
error when creating locking filter debugfs file is failed, since
ocfs2_dlm_shutdown_debug() will handle this failure perfectly.
Compared with v1, the main change is to add CONFIG_OCFS2_FS_STATS
macro definition judgment.
Signed-off-by: Gang He
Reviewed-by: Joseph Qi
these deadlock problems via
comparing the first lock wait time with the current time.
Signed-off-by: Gang He
---
fs/ocfs2/dlmglue.c | 32 +---
fs/ocfs2/ocfs2.h | 1 +
2 files changed, 30 insertions(+), 3 deletions(-)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
Hi Wengang,
>>> On 2019/5/29 at 1:22, in message
<66083663-1d25-437b-ce98-07d200f44...@oracle.com>, Wengang
wrote:
> Hi Gang,
>
> This idea sounds cool!
> Some comments in lines:
>
> On 05/23/2019 03:40 AM, Gang He wrote:
>> ocfs2 file system uses l
ess time field too.
>
> thanks,
> wengang
>
> On 2019/5/23 19:15, Gang He wrote:
>> Hello Wengang,
>>
>> This patch is used to add a filter attribute(the default value is 0), the
> kernel module can use this attribute value to filter the lock resources
>
example of outputs before patch VS that after patch?
> I think that would directly show what the patch does.
>
> thanks,
> wengang
>
> On 05/23/2019 03:40 AM, Gang He wrote:
>> Add locking filter debugfs file, which is used to filter lock
>> resources dump from loc
.
Compared with v1, the main change is to add CONFIG_OCFS2_FS_STATS
macro definition judgment.
Signed-off-by: Gang He
Reviewed-by: Joseph Qi
---
fs/ocfs2/dlmglue.c | 36
fs/ocfs2/ocfs2.h | 2 ++
2 files changed, 38 insertions(+)
diff --git a/fs/ocfs2/dlmglue.c
record.
Signed-off-by: Gang He
Reviewed-by: Joseph Qi
---
fs/ocfs2/dlmglue.c | 21 +
fs/ocfs2/ocfs2.h | 1 +
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index af405586c5b1..dccf4136f8c1 100644
--- a/fs/ocfs2
Hello ChangWei,
>>> On 2019/1/15 at 16:00, in message
<63adc13fd55d6546b7dece290d39e3730127826...@h3cmlb12-ex.srv.huawei-3com.com>,
Changwei Ge wrote:
> On 2019/1/15 13:49, Gang He wrote:
>> Hello Changewei,
>>
>>>>> On 2019/1/15 at 11:50, in messag
Hello Changewei,
>>> On 2019/1/15 at 11:50, in message
<63adc13fd55d6546b7dece290d39e3730127825...@h3cmlb12-ex.srv.huawei-3com.com>,
Changwei Ge wrote:
> Hi Gang,
>
> Most parts of this patch look sane to me, just a tiny question...
>
> On 2019/1/11 17:01, Gang
meta-file.
Signed-off-by: Gang He
---
fs/ocfs2/alloc.c | 159 +
fs/ocfs2/dlmglue.c | 5 ++
fs/ocfs2/ocfs2.h | 1 +
fs/ocfs2/ocfs2_trace.h | 2 +
fs/ocfs2/super.c | 2 +
5 files changed, 106 insertions(+), 63 deletions(-)
diff
Hello Larry,
>>> On 2018/8/16 at 19:24, in message <20180816112426.12218-1-lc...@suse.com>,
Larry Chen wrote:
> ocfs2_duplicate_clusters_by_page may crash if an extent's page is dirty.
> When a page has not been written back, it is still in dirty state. If at
> that moment,
Hello Larry,
>>> On 2018/8/16 at 19:24, in message <20180816112426.12218-1-lc...@suse.com>,
Larry Chen wrote:
> ocfs2_duplicate_clusters_by_page may crash if an extent's page is dirty.
> When a page has not been written back, it is still in dirty state. If at
> that moment,
process 2
ocfs2_inode_lock_tracker(ex=0)
<== ocfs2_inode_lock_tracker(ex=1)
ocfs2_inode_lock_tracker(ex=1)
Signed-off-by: Larry Chen <lc...@suse.com>
Reviewed-by: Gang He <g...@sus
process 2
ocfs2_inode_lock_tracker(ex=0)
<== ocfs2_inode_lock_tracker(ex=1)
ocfs2_inode_lock_tracker(ex=1)
Signed-off-by: Larry Chen
Reviewed-by: Gang He
---
fs/ocfs2/dlmglue.c | 119 +++--
fs/ocfs2/dlmglue.h | 1 +
, the time is spent in sock->ops->connect()
function before returns ETIMEDOUT(-110) error, since O_NONBLOCK
argument in connect() function does not work here, then we should
make sock->ops->connect() function return in specified time via
setting socket SO_SNDTIMEO atrribute.
Signed-off-by
, the time is spent in sock->ops->connect()
function before returns ETIMEDOUT(-110) error, since O_NONBLOCK
argument in connect() function does not work here, then we should
make sock->ops->connect() function return in specified time via
setting socket SO_SNDTIMEO atrribute.
Signed-off-by: Gang
Hi David,
>>>
> On Thu, Mar 22, 2018 at 10:27:56PM -0600, Gang He wrote:
>> Hello David,
>>
>> Do you agree to add this prompt to the user?
>> Since sometimes customers attempted to setup SCTP protocol with two rings,
>> but they could not get the
Hi David,
>>>
> On Thu, Mar 22, 2018 at 10:27:56PM -0600, Gang He wrote:
>> Hello David,
>>
>> Do you agree to add this prompt to the user?
>> Since sometimes customers attempted to setup SCTP protocol with two rings,
>> but they could not get the
ut 5mins hang in case
> one connection(ring) is broken.
> Then, I suggest to add a kernel print, which prompts the user SCTP
> protocol for DLM should be considered experimental, it is not
> recommended in production environment.
>
> Signed-off-by: Gang He <g...@suse.com>
&g
ut 5mins hang in case
> one connection(ring) is broken.
> Then, I suggest to add a kernel print, which prompts the user SCTP
> protocol for DLM should be considered experimental, it is not
> recommended in production environment.
>
> Signed-off-by: Gang He
> ---
> fs/
in case
one connection(ring) is broken.
Then, I suggest to add a kernel print, which prompts the user SCTP
protocol for DLM should be considered experimental, it is not
recommended in production environment.
Signed-off-by: Gang He <g...@suse.com>
---
fs/dlm/lowcomms.c | 1 +
1 file chan
in case
one connection(ring) is broken.
Then, I suggest to add a kernel print, which prompts the user SCTP
protocol for DLM should be considered experimental, it is not
recommended in production environment.
Signed-off-by: Gang He
---
fs/dlm/lowcomms.c | 1 +
1 file changed, 1 insertion(+)
diff
Return -EAGAIN if any of the following checks fail for
direct I/O with nowait flag:
Can not get the related locks immediately,
Blocks are not allocated at the write location, it will trigger
block allocation, this will block IO operations.
Signed-off-by: Gang He <g...@suse.com>
---
fs
Add ocfs2_overwrite_io function, which is used to judge if
overwrite allocated blocks, otherwise, the write will bring extra
block allocation overhead.
Reviewed-by: Alex Chen <alex.c...@huawei.com>
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/exten
Add ocfs2_overwrite_io function, which is used to judge if
overwrite allocated blocks, otherwise, the write will bring extra
block allocation overhead.
Reviewed-by: Alex Chen
Signed-off-by: Gang He
---
fs/ocfs2/extent_map.c | 45 +
fs/ocfs2
Return -EAGAIN if any of the following checks fail for
direct I/O with nowait flag:
Can not get the related locks immediately,
Blocks are not allocated at the write location, it will trigger
block allocation, this will block IO operations.
Signed-off-by: Gang He
---
fs/ocfs2/dir.c | 2
to the upper code,
move invoking ocfs2_overwrite_io() function from
ocfs2_file_write_iter() to ocfs2_prepare_inode_for_write(),
this change can combine acquiring the related locks.
Gang He (3):
ocfs2: add ocfs2_try_rw_lock and ocfs2_try_inode_lock
ocfs2: add ocfs2_overwrite_io function
ocfs2
to the upper code,
move invoking ocfs2_overwrite_io() function from
ocfs2_file_write_iter() to ocfs2_prepare_inode_for_write(),
this change can combine acquiring the related locks.
Gang He (3):
ocfs2: add ocfs2_try_rw_lock and ocfs2_try_inode_lock
ocfs2: add ocfs2_overwrite_io function
ocfs2
Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
will be used in non-block IO scenarios.
Reviewed-by: Alex Chen <alex.c...@huawei.com>
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/dlmglue.c | 21 +
fs/ocfs2/dlmglue.h | 4
2 files
Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
will be used in non-block IO scenarios.
Reviewed-by: Alex Chen
Signed-off-by: Gang He
---
fs/ocfs2/dlmglue.c | 21 +
fs/ocfs2/dlmglue.h | 4
2 files changed, 25 insertions(+)
diff --git a/fs/ocfs2
>>>
> On 2018/1/11 15:19, Gang He wrote:
>>
>>
>>
>>>>>
>>> On 2018/1/11 12:31, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>> On 2018/1/11 11:
>>>
> On 2018/1/11 15:19, Gang He wrote:
>>
>>
>>
>>>>>
>>> On 2018/1/11 12:31, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>> On 2018/1/11 11:
>>>
> On 2018/1/11 12:31, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> On 2018/1/11 11:33, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>> On 2018/1/11 10:
>>>
> On 2018/1/11 12:31, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> On 2018/1/11 11:33, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>> On 2018/1/11 10:
Hi Changwei,
>>>
> On 2018/1/11 11:33, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> On 2018/1/11 10:07, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>
Hi Changwei,
>>>
> On 2018/1/11 11:33, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> On 2018/1/11 10:07, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>
Hi Changwei,
>>>
> On 2018/1/11 10:07, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> On 2018/1/10 18:14, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>> On
Hi Changwei,
>>>
> On 2018/1/11 10:07, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> On 2018/1/10 18:14, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>> On
Hi Alex,
>>>
> Hi Gang,
>
> On 2017/12/28 18:07, Gang He wrote:
>> Return -EAGAIN if any of the following checks fail for
>> direct I/O with nowait flag:
>> Can not get the related locks immediately,
>> Blocks are not allocated at the write loc
Hi Alex,
>>>
> Hi Gang,
>
> On 2017/12/28 18:07, Gang He wrote:
>> Return -EAGAIN if any of the following checks fail for
>> direct I/O with nowait flag:
>> Can not get the related locks immediately,
>> Blocks are not allocated at the write loc
Hi Changwei,
>>>
> On 2018/1/10 18:14, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> On 2018/1/10 17:05, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>&g
Hi Changwei,
>>>
> On 2018/1/10 18:14, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> On 2018/1/10 17:05, Gang He wrote:
>>>> Hi Changwei,
>>>>
>>>>
>>>>>>>
>>>>&g
Hi Changwei,
>>>
> On 2018/1/10 17:05, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> Hi Gang,
>>>
>>> On 2017/12/14 13:16, Gang He wrote:
>>>> As you know, ocfs2 has support trim the underlying disk via
&
Hi Changwei,
>>>
> On 2018/1/10 17:05, Gang He wrote:
>> Hi Changwei,
>>
>>
>>>>>
>>> Hi Gang,
>>>
>>> On 2017/12/14 13:16, Gang He wrote:
>>>> As you know, ocfs2 has support trim the underlying disk via
&
Hi Changwei,
>>>
> Hi Gang,
>
> On 2017/12/14 13:16, Gang He wrote:
>> As you know, ocfs2 has support trim the underlying disk via
>> fstrim command. But there is a problem, ocfs2 is a shared disk
>> cluster file system, if the user configures a scheduled fs
Hi Changwei,
>>>
> Hi Gang,
>
> On 2017/12/14 13:16, Gang He wrote:
>> As you know, ocfs2 has support trim the underlying disk via
>> fstrim command. But there is a problem, ocfs2 is a shared disk
>> cluster file system, if the user configures a scheduled fs
Hi Changwei,
>>>
> Hi Gang,
>
> On 2017/12/14 13:16, Gang He wrote:
>> Introduce a new dlm lock resource, which will be used to
>> communicate during fstrim a ocfs2 device from cluster nodes.
>>
>> Signed-off-by: Gang He <g...@suse.
Hi Changwei,
>>>
> Hi Gang,
>
> On 2017/12/14 13:16, Gang He wrote:
>> Introduce a new dlm lock resource, which will be used to
>> communicate during fstrim a ocfs2 device from cluster nodes.
>>
>> Signed-off-by: Gang He
Hi Andrew,
>>> Andrew Morton <a...@linux-foundation.org> 01/06/18 4:50 AM >>>
On Thu, 04 Jan 2018 23:31:12 -0700 "Gang He" <g...@suse.com> wrote:
> Happy new year.
> Could you help to pick up this patch, which is used to fix a old patch
>
Hi Andrew,
>>> Andrew Morton 01/06/18 4:50 AM >>>
On Thu, 04 Jan 2018 23:31:12 -0700 "Gang He" wrote:
> Happy new year.
> Could you help to pick up this patch, which is used to fix a old patch
> 1cce4df04f37.
> If we have not this patch, so
to be fenced.
Thanks
Gang
>>>
>
> On 17/12/28 15:48, Gang He wrote:
>> If we can't get inode lock immediately in the function
>> ocfs2_inode_lock_with_page() when reading a page, we should not
>> return directly here, since this will lead to a softlockup problem
to be fenced.
Thanks
Gang
>>>
>
> On 17/12/28 15:48, Gang He wrote:
>> If we can't get inode lock immediately in the function
>> ocfs2_inode_lock_with_page() when reading a page, we should not
>> return directly here, since this will lead to a softlockup problem
Hi Alex,
>>>
> Hi Gang,
>
> On 2018/1/3 13:14, Gang He wrote:
>> Hi Alex,
>>
>>
>>>>>
>>> Hi Gang,
>>>
>>> On 2017/12/28 18:07, Gang He wrote:
>>>> Add ocfs2_overwrite_io function, which is used to
Hi Alex,
>>>
> Hi Gang,
>
> On 2018/1/3 13:14, Gang He wrote:
>> Hi Alex,
>>
>>
>>>>>
>>> Hi Gang,
>>>
>>> On 2017/12/28 18:07, Gang He wrote:
>>>> Add ocfs2_overwrite_io function, which is used to
Hi Alex,
>>>
> Hi Gang,
>
> On 2017/12/14 13:14, Gang He wrote:
>> As you know, ocfs2 has support trim the underlying disk via
>> fstrim command. But there is a problem, ocfs2 is a shared disk
>> cluster file system, if the user configures a scheduled fs
Hi Alex,
>>>
> Hi Gang,
>
> On 2017/12/14 13:14, Gang He wrote:
>> As you know, ocfs2 has support trim the underlying disk via
>> fstrim command. But there is a problem, ocfs2 is a shared disk
>> cluster file system, if the user configures a scheduled fs
Hi Alex,
>>>
> Hi Gang,
>
> On 2017/12/28 18:07, Gang He wrote:
>> Add ocfs2_overwrite_io function, which is used to judge if
>> overwrite allocated blocks, otherwise, the write will bring extra
>> block allocation overhead.
>>
>> Signed-off
Hi Alex,
>>>
> Hi Gang,
>
> On 2017/12/28 18:07, Gang He wrote:
>> Add ocfs2_overwrite_io function, which is used to judge if
>> overwrite allocated blocks, otherwise, the write will bring extra
>> block allocation overhead.
>>
>> Signed-off-by
Add ocfs2_overwrite_io function, which is used to judge if
overwrite allocated blocks, otherwise, the write will bring extra
block allocation overhead.
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/extent_map.c | 45 +
fs/ocfs2/extent_map.
Add ocfs2_overwrite_io function, which is used to judge if
overwrite allocated blocks, otherwise, the write will bring extra
block allocation overhead.
Signed-off-by: Gang He
---
fs/ocfs2/extent_map.c | 45 +
fs/ocfs2/extent_map.h | 3 +++
2 files
.
Gang He (3):
ocfs2: add ocfs2_try_rw_lock and ocfs2_try_inode_lock
ocfs2: add ocfs2_overwrite_io function
ocfs2: nowait aio support
fs/ocfs2/dir.c | 2 +-
fs/ocfs2/dlmglue.c | 41 +++---
fs/ocfs2/dlmglue.h | 6 +++-
fs/ocfs2/extent_map.c | 45
Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
will be used in non-block IO scenarios.
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/dlmglue.c | 21 +
fs/ocfs2/dlmglue.h | 4
2 files changed, 25 insertions(+)
diff --git a/fs/ocfs2/dlmglue.
.
Gang He (3):
ocfs2: add ocfs2_try_rw_lock and ocfs2_try_inode_lock
ocfs2: add ocfs2_overwrite_io function
ocfs2: nowait aio support
fs/ocfs2/dir.c | 2 +-
fs/ocfs2/dlmglue.c | 41 +++---
fs/ocfs2/dlmglue.h | 6 +++-
fs/ocfs2/extent_map.c | 45
Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
will be used in non-block IO scenarios.
Signed-off-by: Gang He
---
fs/ocfs2/dlmglue.c | 21 +
fs/ocfs2/dlmglue.h | 4
2 files changed, 25 insertions(+)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
Return -EAGAIN if any of the following checks fail for
direct I/O with nowait flag:
Can not get the related locks immediately,
Blocks are not allocated at the write location, it will trigger
block allocation, this will block IO operations.
Signed-off-by: Gang He <g...@suse.com>
---
fs
Return -EAGAIN if any of the following checks fail for
direct I/O with nowait flag:
Can not get the related locks immediately,
Blocks are not allocated at the write location, it will trigger
block allocation, this will block IO operations.
Signed-off-by: Gang He
---
fs/ocfs2/dir.c | 2
:04:12 CST 2017
multi_mmap..Passed.
Runtime 487 seconds.
Fixes: 1cce4df04f37 ("ocfs2: do not lock/unlock() inode DLM lock")
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/dlmglue.c | 9 +
1 file changed, 9 insertions(+)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocf
:04:12 CST 2017
multi_mmap..Passed.
Runtime 487 seconds.
Fixes: 1cce4df04f37 ("ocfs2: do not lock/unlock() inode DLM lock")
Signed-off-by: Gang He
---
fs/ocfs2/dlmglue.c | 9 +
1 file changed, 9 insertions(+)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 46
lock immediately here.
In fact, this patch does NOT add new code, just revert the old patch
1cce4df04f37, and add
more clear comments in the front of these two lines code.
Thanks
Gang
>
> thanks,
> Jun
>
> On 2017/12/28 10:11, Gang He wrote:
>> Hi Jun,
>>
>>
&
lock immediately here.
In fact, this patch does NOT add new code, just revert the old patch
1cce4df04f37, and add
more clear comments in the front of these two lines code.
Thanks
Gang
>
> thanks,
> Jun
>
> On 2017/12/28 10:11, Gang He wrote:
>> Hi Jun,
>>
>>
&
Hi Alex,
>>>
> Hi Gang,
>
> On 2017/12/27 18:37, Gang He wrote:
>> Hi Jun,
>>
>>
>>>>>
>>> Hi Gang,
>>>
>>> Do you mean that too many retrys in loop cast losts of CPU-time and
>>> block page-fault interr
Hi Alex,
>>>
> Hi Gang,
>
> On 2017/12/27 18:37, Gang He wrote:
>> Hi Jun,
>>
>>
>>>>>
>>> Hi Gang,
>>>
>>> Do you mean that too many retrys in loop cast losts of CPU-time and
>>> block page-fault interr
> Jun
>
> On 2017/12/27 18:37, Gang He wrote:
>> Hi Jun,
>>
>>
>>>>>
>>> Hi Gang,
>>>
>>> Do you mean that too many retrys in loop cast losts of CPU-time and
>>> block page-fault interrupt? We should not add any dela
> Jun
>
> On 2017/12/27 18:37, Gang He wrote:
>> Hi Jun,
>>
>>
>>>>>
>>> Hi Gang,
>>>
>>> Do you mean that too many retrys in loop cast losts of CPU-time and
>>> block page-fault interrupt? We should not add any dela
patch 1cce4df04f37 ("ocfs2: do not
lock/unlock() inode DLM lock"),
before that patch, the code is the same, this patch can be considered to revert
that patch, except adding more
clear comments.
Thanks
Gang
>
> thanks,
> Jun
>
> On 2017/12/27 17:29, Gang
patch 1cce4df04f37 ("ocfs2: do not
lock/unlock() inode DLM lock"),
before that patch, the code is the same, this patch can be considered to revert
that patch, except adding more
clear comments.
Thanks
Gang
>
> thanks,
> Jun
>
> On 2017/12/27 17:29, Gang
:
R10: 0483 R11: 7fa75ded61b0 R12: 7fa75e90a770
R13: 000e R14: 1770 R15:
Fixes: 1cce4df04f37 ("ocfs2: do not lock/unlock() inode DLM lock")
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/dlmglue.c | 9 +
:
R10: 0483 R11: 7fa75ded61b0 R12: 7fa75e90a770
R13: 000e R14: 1770 R15:
Fixes: 1cce4df04f37 ("ocfs2: do not lock/unlock() inode DLM lock")
Signed-off-by: Gang He
---
fs/ocfs2/dlmglue.c | 9 +
1 file changed, 9
on a shared disk.
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/alloc.c | 44
1 file changed, 44 insertions(+)
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index ab5105f..5c9c3e2 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -7382,6 +
on a shared disk.
Signed-off-by: Gang He
---
fs/ocfs2/alloc.c | 44
1 file changed, 44 insertions(+)
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index ab5105f..5c9c3e2 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -7382,6 +7382,7 @@ int
Introduce a new dlm lock resource, which will be used to
communicate during fstrim a ocfs2 device from cluster nodes.
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/dlmglue.c | 86 +
fs/ocfs2/dlmglue.h | 29 +++
Introduce a new dlm lock resource, which will be used to
communicate during fstrim a ocfs2 device from cluster nodes.
Signed-off-by: Gang He
---
fs/ocfs2/dlmglue.c | 86 +
fs/ocfs2/dlmglue.h | 29 +
fs/ocfs2/ocfs2.h
Hi Changwei,
>>>
> Hi Gang,
>
> On 2017/11/30 10:45, Gang He wrote:
>> Hello Changwei,
>>
>>
>>>>>
>>> On 2017/11/29 16:38, Gang He wrote:
>>>> Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
>>
Hi Changwei,
>>>
> Hi Gang,
>
> On 2017/11/30 10:45, Gang He wrote:
>> Hello Changwei,
>>
>>
>>>>>
>>> On 2017/11/29 16:38, Gang He wrote:
>>>> Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
>&
Hello Changwei,
>>>
> On 2017/11/29 16:38, Gang He wrote:
>> Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
>> will be used in non-block IO scenarios.
>>
>> Signed-off-by: Gang He <g...@suse.com>
>> ---
>> fs/ocfs2/dlmglu
Hello Changwei,
>>>
> On 2017/11/29 16:38, Gang He wrote:
>> Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
>> will be used in non-block IO scenarios.
>>
>> Signed-off-by: Gang He
>> ---
>> fs/ocfs2/dlmglue.c | 21 ++
Add ocfs2_overwrite_io function, which is used to judge if
overwrite allocated blocks, otherwise, the write will bring extra
block allocation overhead.
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/extent_map.c | 41 +
fs/ocfs2/extent_map.
Add ocfs2_overwrite_io function, which is used to judge if
overwrite allocated blocks, otherwise, the write will bring extra
block allocation overhead.
Signed-off-by: Gang He
---
fs/ocfs2/extent_map.c | 41 +
fs/ocfs2/extent_map.h | 3 +++
2 files
Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
will be used in non-block IO scenarios.
Signed-off-by: Gang He <g...@suse.com>
---
fs/ocfs2/dlmglue.c | 21 +
fs/ocfs2/dlmglue.h | 4
2 files changed, 25 insertions(+)
diff --git a/fs/ocfs2/dlmglue.
Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which
will be used in non-block IO scenarios.
Signed-off-by: Gang He
---
fs/ocfs2/dlmglue.c | 21 +
fs/ocfs2/dlmglue.h | 4
2 files changed, 25 insertions(+)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
Return -EAGAIN if any of the following checks fail for
direct I/O with nowait flag:
Can not get the related locks immediately,
Blocks are not allocated at the write location, it will trigger
block allocation, this will block IO operations.
Signed-off-by: Gang He <g...@suse.com>
---
fs
can be returned to the upper code,
move invoking ocfs2_overwrite_io() function from
ocfs2_file_write_iter() to ocfs2_prepare_inode_for_write(),
this change can combine acquiring the related locks.
Gang He (3):
ocfs2: add ocfs2_try_rw_lock and ocfs2_try_inode_lock
ocfs2: add ocfs2_overwrite_io
Return -EAGAIN if any of the following checks fail for
direct I/O with nowait flag:
Can not get the related locks immediately,
Blocks are not allocated at the write location, it will trigger
block allocation, this will block IO operations.
Signed-off-by: Gang He
---
fs/ocfs2/dir.c | 2
can be returned to the upper code,
move invoking ocfs2_overwrite_io() function from
ocfs2_file_write_iter() to ocfs2_prepare_inode_for_write(),
this change can combine acquiring the related locks.
Gang He (3):
ocfs2: add ocfs2_try_rw_lock and ocfs2_try_inode_lock
ocfs2: add ocfs2_overwrite_io
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