Messages in this thread | | | Date | Thu, 29 Nov 2007 15:14:14 -0500 | From | Oren Laadan <> | Subject | Re: [patch -mm 2/4] mqueue namespace : add unshare support |
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Cedric Le Goater wrote: >>> Index: 2.6.24-rc3-mm2/include/linux/sched.h >>> =================================================================== >>> --- 2.6.24-rc3-mm2.orig/include/linux/sched.h >>> +++ 2.6.24-rc3-mm2/include/linux/sched.h >>> @@ -27,6 +27,7 @@ >>> #define CLONE_NEWUSER 0x10000000 /* New user namespace */ >>> #define CLONE_NEWPID 0x20000000 /* New pid namespace */ >>> #define CLONE_NEWNET 0x40000000 /* New network namespace */ >>> +#define CLONE_NEWMQ 0x80000000 /* New posix mqueue namespace */ >> That's it :) We've run out of clone flags on 32-bit platforms :( > > yes. > > I have been giving some thoughts to a clone2() to extend the flags but > andrew is preparing to recycle CLONE_DETACHED and CLONE_STOPPED for > 2.6.26. Some we might have some more time in front of us.
Two comments:
1) Does it ever make any sense to clone the IPC namespace *without* doing so also for the MQ namespace or vice versa ? Unless there is a good reason for doing so, a single CLONE_IPCMQ flag would suffice.
2) Before coming up with a new clone2() or other solution, what about the proposed (and debated) sys_indrect() -- if it gets merged it can provide the solution.
Oren.
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