[Devel] Re: ***SPAM*** Re: [PATCH v7 00/10] IPC: checkpoint/restore in userspace enhancements

[Stanislav Kinsbursky]

18.10.2012 14:41, Michael Kerrisk (man-pages) пишет:
> Stanislaw,
>
> This patch series is an API change. Could you please make sure that
> all future revisions CC linux-api at vger.kernel.org, as per
> Documentation/SubmitChecklist.
>

Yes, sure. Thanks.

> Cheers,
>
> Michael
>
>
> On Thu, Oct 18, 2012 at 12:22 PM, Stanislav Kinsbursky
> <skinsbursky at parallels.com> wrote:
>> v7:
>> 1) Added comments in places, when behiviour is not obvious.
>> 2) Compilation fixed for compat layer
>> 3) test updated to use existent header files (instead of hard-coding new
>> defines in case of absence).
>> 4) comment fixed in qlge driver
>>
>> v6:
>> 1) rebased on 3.7-rc1
>>
>> v5:
>> 1) Several define-dependent compile bugs fixed
>> 2) IPC message copy test updated
>> 3) A couple of minor fixes.
>> 4) Qlogic driver update: rename of its internal SEM_SET define into SEM_INIT
>> (compile error).
>>
>> v4:
>> 1) If MSG_COPY flag is specified, then "mtype" is not a type, but message
>> number to copy.
>> 2) MSG_SET_COPY logic for sys_msgctl() was removed.
>>
>> v3:
>> 1) Copy messages to user-space under spinlock was replaced by allocation of
>> dummy message before queue lock and then copy of desired message to the dummy
>> one instead of unlinking it from queue list.
>> I.e. the message queue copy logic was changed: messages can be retrived one by
>> one (instead of receiving of the whole list at once).
>>
>> This patch set is aimed to provide additional functionality for all IPC
>> objects,
>> which is required for migration of these objects by user-space
>> checkpoint/restore utils (CRIU).
>>
>> The main problem here was impossibility to set up object id. This patch set
>> solves the problem in two steps:
>> 1) Makes it possible to create new object (shared memory, semaphores set or
>> messages queue) with ID, equal to passed key.
>> 2) Makes it possible to change existent object key.
>>
>> Another problem was to peek messages from queues without deleting them.
>> This was achived by introducing of new MSG_COPY flag for sys_msgrcv(). If
>> MSG_COPY flag is set, then msgtyp is interpreted as message number.
>>
>> The following series implements...
>>
>> ---
>>
>> Stanislav Kinsbursky (10):
>>        ipc: remove forced assignment of selected message
>>        ipc: "use key as id" functionality for resource get system call introduced
>>        ipc: segment key change helper introduced
>>        ipc: add new SHM_SET command for sys_shmctl() call
>>        ipc: add new MSG_SET command for sys_msgctl() call
>>        qlge driver: rename internal SEM_SET macro to SEM_INIT
>>        ipc: add new SEM_SET command for sys_semctl() call
>>        IPC: message queue receive cleanup
>>        IPC: message queue copy feature introduced
>>        test: IPC message queue copy feture test
>>
>>
>>   drivers/net/ethernet/qlogic/qlge/qlge.h      |    4
>>   drivers/net/ethernet/qlogic/qlge/qlge_main.c |   16 +-
>>   include/linux/msg.h                          |    5 -
>>   include/uapi/linux/ipc.h                     |    1
>>   include/uapi/linux/msg.h                     |    2
>>   include/uapi/linux/sem.h                     |    1
>>   include/uapi/linux/shm.h                     |    1
>>   ipc/compat.c                                 |   54 +++---
>>   ipc/msg.c                                    |  117 ++++++++++---
>>   ipc/msgutil.c                                |   38 ++++
>>   ipc/sem.c                                    |   15 +-
>>   ipc/shm.c                                    |   18 ++
>>   ipc/util.c                                   |   67 +++++++-
>>   ipc/util.h                                   |    6 +
>>   security/selinux/hooks.c                     |    3
>>   security/smack/smack_lsm.c                   |    3
>>   tools/testing/selftests/ipc/Makefile         |   25 +++
>>   tools/testing/selftests/ipc/msgque.c         |  231 ++++++++++++++++++++++++++
>>   18 files changed, 526 insertions(+), 81 deletions(-)
>>   create mode 100644 tools/testing/selftests/ipc/Makefile
>>   create mode 100644 tools/testing/selftests/ipc/msgque.c
>>
>
>
>


-- 
Best regards,
Stanislav Kinsbursky