[PATCH 0/3] rbd: header read/refresh improvements

2015-04-23 Thread Douglas Fuller
Support multiple class op calls in one ceph_msg and consolidate rbd header
read and refresh processes to use this feature to reduce the number of
ceph_msgs sent for that process. Refresh features on header refresh and
begin returning EIO if features have changed since mapping.

Douglas Fuller (3):
  ceph: support multiple class method calls in one ceph_msg
  rbd: combine object method calls in header refresh using fewer
ceph_msgs
  rbd: re-read features during header refresh and detect changes.

 drivers/block/rbd.c | 518 +---
 include/linux/ceph/osd_client.h |   3 +-
 net/ceph/messenger.c|   4 +
 net/ceph/osd_client.c   |  92 ++-
 4 files changed, 470 insertions(+), 147 deletions(-)

-- 
1.9.3

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Re: [PATCH 0/3] rbd: header read/refresh improvements

2015-04-24 Thread Alex Elder

On 04/23/2015 02:06 PM, Douglas Fuller wrote:

Support multiple class op calls in one ceph_msg and consolidate rbd header
read and refresh processes to use this feature to reduce the number of
ceph_msgs sent for that process. Refresh features on header refresh and
begin returning EIO if features have changed since mapping.

Douglas Fuller (3):
   ceph: support multiple class method calls in one ceph_msg
   rbd: combine object method calls in header refresh using fewer
 ceph_msgs
   rbd: re-read features during header refresh and detect changes.

  drivers/block/rbd.c | 518 +---
  include/linux/ceph/osd_client.h |   3 +-
  net/ceph/messenger.c|   4 +
  net/ceph/osd_client.c   |  92 ++-
  4 files changed, 470 insertions(+), 147 deletions(-)



In case Ilya or others don't get to it soon, I plan to review this
series tomorrow.

-Alex
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Re: [PATCH 0/3] rbd: header read/refresh improvements

2015-04-24 Thread Douglas Fuller

> On Apr 24, 2015, at 9:11 AM, Alex Elder  wrote:
> 
> On 04/23/2015 02:06 PM, Douglas Fuller wrote:
>> Support multiple class op calls in one ceph_msg and consolidate rbd header
>> read and refresh processes to use this feature to reduce the number of
>> ceph_msgs sent for that process. Refresh features on header refresh and
>> begin returning EIO if features have changed since mapping.
>> 
>> Douglas Fuller (3):
>>   ceph: support multiple class method calls in one ceph_msg
>>   rbd: combine object method calls in header refresh using fewer
>> ceph_msgs
>>   rbd: re-read features during header refresh and detect changes.
>> 
>>  drivers/block/rbd.c | 518 
>> +---
>>  include/linux/ceph/osd_client.h |   3 +-
>>  net/ceph/messenger.c|   4 +
>>  net/ceph/osd_client.c   |  92 ++-
>>  4 files changed, 470 insertions(+), 147 deletions(-)
>> 
> 
> In case Ilya or others don't get to it soon, I plan to review this
> series tomorrow.
> 
>   -Alex

Much appreciated. I sent an update this morning, as well.

—Doug--
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Re: [PATCH 0/3] rbd: header read/refresh improvements

2015-04-24 Thread Ilya Dryomov
On Fri, Apr 24, 2015 at 4:11 PM, Alex Elder  wrote:
> On 04/23/2015 02:06 PM, Douglas Fuller wrote:
>>
>> Support multiple class op calls in one ceph_msg and consolidate rbd header
>> read and refresh processes to use this feature to reduce the number of
>> ceph_msgs sent for that process. Refresh features on header refresh and
>> begin returning EIO if features have changed since mapping.
>>
>> Douglas Fuller (3):
>>ceph: support multiple class method calls in one ceph_msg
>>rbd: combine object method calls in header refresh using fewer
>>  ceph_msgs
>>rbd: re-read features during header refresh and detect changes.
>>
>>   drivers/block/rbd.c | 518
>> +---
>>   include/linux/ceph/osd_client.h |   3 +-
>>   net/ceph/messenger.c|   4 +
>>   net/ceph/osd_client.c   |  92 ++-
>>   4 files changed, 470 insertions(+), 147 deletions(-)
>>
>
> In case Ilya or others don't get to it soon, I plan to review this
> series tomorrow.

I was planning take a look while I'm the road during the weekend.

Doug, from a quick look this revision still has a bunch of style
issues, most notably the alignment of function parameters and braces
around if / else.  See Documentation/CodingStyle in the kernel tree for
examples.

You might also want to run your patches through scripts/checkpatch.pl,
but take it with a grain of salt - it can be a bit too extreme at
times.  No need to post v3 with just style fixes, wait for more feedback.

Thanks,

Ilya
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Re: [PATCH 0/3] rbd: header read/refresh improvements

2015-04-24 Thread Douglas Fuller

> On Apr 24, 2015, at 10:17 AM, Ilya Dryomov  wrote:
> 
> On Fri, Apr 24, 2015 at 4:11 PM, Alex Elder  wrote:
>> On 04/23/2015 02:06 PM, Douglas Fuller wrote:
>>> 
>>> Support multiple class op calls in one ceph_msg and consolidate rbd header
>>> read and refresh processes to use this feature to reduce the number of
>>> ceph_msgs sent for that process. Refresh features on header refresh and
>>> begin returning EIO if features have changed since mapping.
>>> 
>>> Douglas Fuller (3):
>>>   ceph: support multiple class method calls in one ceph_msg
>>>   rbd: combine object method calls in header refresh using fewer
>>> ceph_msgs
>>>   rbd: re-read features during header refresh and detect changes.
>>> 
>>>  drivers/block/rbd.c | 518
>>> +---
>>>  include/linux/ceph/osd_client.h |   3 +-
>>>  net/ceph/messenger.c|   4 +
>>>  net/ceph/osd_client.c   |  92 ++-
>>>  4 files changed, 470 insertions(+), 147 deletions(-)
>>> 
>> 
>> In case Ilya or others don't get to it soon, I plan to review this
>> series tomorrow.
> 
> I was planning take a look while I'm the road during the weekend.
> 
> Doug, from a quick look this revision still has a bunch of style
> issues, most notably the alignment of function parameters and braces
> around if / else.  See Documentation/CodingStyle in the kernel tree for
> examples.

I needed to put out v2 in part because I squashed a couple fixup commits in the 
wrong place, leaving some things behind in #2 that were corrected in #3.

I changed the braces in that version, but the function parameter indents are 
inconsistent throughout the code. I’ll try to come up with a compromise.

> 
> You might also want to run your patches through scripts/checkpatch.pl,
> but take it with a grain of salt - it can be a bit too extreme at
> times.  No need to post v3 with just style fixes, wait for more feedback.

Thanks again for all feedback.

> 
> Thanks,
> 
>Ilya

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Re: [PATCH 0/3] rbd: header read/refresh improvements

2015-04-24 Thread Alex Elder

On 04/24/2015 09:40 AM, Douglas Fuller wrote:



On Apr 24, 2015, at 10:17 AM, Ilya Dryomov 
wrote:

On Fri, Apr 24, 2015 at 4:11 PM, Alex Elder 
wrote:

On 04/23/2015 02:06 PM, Douglas Fuller wrote:


Support multiple class op calls in one ceph_msg and consolidate
rbd header read and refresh processes to use this feature to
reduce the number of ceph_msgs sent for that process. Refresh
features on header refresh and begin returning EIO if features
have changed since mapping.

Douglas Fuller (3): ceph: support multiple class method calls
in one ceph_msg rbd: combine object method calls in header
refresh using fewer ceph_msgs rbd: re-read features during
header refresh and detect changes.

drivers/block/rbd.c | 518
+---
include/linux/ceph/osd_client.h |   3 +- net/ceph/messenger.c
|   4 + net/ceph/osd_client.c   |  92 ++- 4 files
changed, 470 insertions(+), 147 deletions(-)



In case Ilya or others don't get to it soon, I plan to review
this series tomorrow.


I was planning take a look while I'm the road during the weekend.

Doug, from a quick look this revision still has a bunch of style
issues, most notably the alignment of function parameters and
braces around if / else.  See Documentation/CodingStyle in the
kernel tree for examples.


I needed to put out v2 in part because I squashed a couple fixup
commits in the wrong place, leaving some things behind in #2 that
were corrected in #3.

I changed the braces in that version, but the function parameter
indents are inconsistent throughout the code. I’ll try to come up
with a compromise.


When in doubt, lean toward the style used in the rest of
the kernel.  I used a few conventions that are not consistent
with that in a lot of places, and those can be gradually
phased toward what's recommended for the kernel.  Some
examples are:
sizeof x or sizeof (x)  -->  sizeof(x)
(cast) foo  --> (cast)foo
White space under comment blocks
static int\nfunction(...)   -> static int function(...)

-Alex



You might also want to run your patches through
scripts/checkpatch.pl, but take it with a grain of salt - it can be
a bit too extreme at times.  No need to post v3 with just style
fixes, wait for more feedback.


Thanks again for all feedback.



Thanks,

Ilya




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