Messages in this thread | | | Date | Thu, 20 Dec 2012 08:06:32 +0400 | From | Stanislav Kinsbursky <> | Subject | Re: [RFC PATCH v8 0/5] IPC: checkpoint/restore in userspace enhancements |
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19.12.2012 00:36, Andrew Morton пишет: > On Wed, 24 Oct 2012 19:34:51 +0400 > Stanislav Kinsbursky <skinsbursky@parallels.com> wrote: > >> This respin of the patch set was significantly reworked. Most part of new API >> was replaced by sysctls (by one per messages, semaphores and shared memory), >> allowing to preset desired id for next new IPC object. >> >> 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 by adding new sysctls for preset of desired id for new IPC >> object. >> >> 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. > According to my extensive records, Sasha hit a bug in > ipc-message-queue-copy-feature-introduced.patch and Fengguang found a > bug in > ipc-message-queue-copy-feature-introduced-cleanup-do_msgrcv-aroung-msg_copy-feature.patch > > It's not obvious (to me) that these things have been identified and > fixed. What's the status, please?
Hello, Andrew. Fengguang's issue was solved by "ipc: simplify message copying" I sent you. But I can't find Sasha's issue. As I remember, there was some problem in early version of the patch set. But I believe its fixed now.
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