Messages in this thread | | | Date | Mon, 2 Apr 2012 13:54:44 +0400 | From | Cyrill Gorcunov <> | Subject | Re: [PATCH 6/7] mm: kill vma flag VM_EXECUTABLE |
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On Mon, Apr 02, 2012 at 01:46:03PM +0400, Konstantin Khlebnikov wrote: > Cyrill Gorcunov wrote: > >On Sat, Mar 31, 2012 at 10:13:24PM +0200, Oleg Nesterov wrote: > >> > >>Add Cyrill. This conflicts with > >>c-r-prctl-add-ability-to-set-new-mm_struct-exe_file.patch in -mm. > > > >Thanks for CC'ing, Oleg. I think if thise series go in it won't > >be a problem to update my patch accordingly. > > In this patch I leave mm->exe_file lockless. > After exec/fork we can change it only for current task and only if mm->mm_users == 1. > > something like this: > > task_lock(current); > if (atomic_read(¤t->mm->mm_users) == 1) > set_mm_exe_file(current->mm, new_file); > else > ret = -EBUSY; > task_unlock(current); > > task_lock() protect this code against get_task_mm()
I see. Konstantin, the question is what is more convenient way to update the patch in linux-next. The c-r-prctl-add-ability-to-set-new-mm_struct-exe_file.patch is in -mm already, so I either should wait until Andrew pick your series up and send updating patch on top, or I could fetch your series, update my patch and send it here as reply. Hmm?
Cyrill
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