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|---|---|
| From | Linus Torvalds <torvalds@linux-foundation.org> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 07/12] x86/virt/guest/xen: Remove use of pgd_list from the Xen guest code |
| Date | Thu, 11 Jun 2015 22:50:03 +0200 |
| Message-ID | <pAhAf-fl-53@gated-at.bofh.it> (permalink) |
| References | <pAbl8-7YY-5@gated-at.bofh.it> <pAbl8-7YY-27@gated-at.bofh.it> <pAhqx-8v7-1@gated-at.bofh.it> |
| X-Original-To | Ingo Molnar <mingo@kernel.org> |
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On Thu, Jun 11, 2015 at 1:37 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> Don't use "for_each_process_thread(g, p)". You only care about each
> mm, and threads all share the same mm, so just do
>
> for_each_process(p)
>
> instead of iterating over all threads too.
Hmm. I may be wrong. It strikes me that one of the group leaders might
have exited but the subthreads live on. We'd see p->mm being NULL,
even though the mm was originally in use.
Ugh. So maybe the code really does need to iterate over all threads.
Linus
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Re: [PATCH 07/12] x86/virt/guest/xen: Remove use of pgd_list from the Xen guest code Linus Torvalds <torvalds@linux-foundation.org> - 2015-06-11 22:40 +0200
Re: [PATCH 07/12] x86/virt/guest/xen: Remove use of pgd_list from the Xen guest code Linus Torvalds <torvalds@linux-foundation.org> - 2015-06-11 22:50 +0200
Re: [PATCH 07/12] x86/virt/guest/xen: Remove use of pgd_list from the Xen guest code Oleg Nesterov <oleg@redhat.com> - 2015-06-13 01:40 +0200
Re: [PATCH 07/12] x86/virt/guest/xen: Remove use of pgd_list from the Xen guest code Ingo Molnar <mingo@kernel.org> - 2015-06-13 09:30 +0200
Re: [PATCH 07/12] x86/virt/guest/xen: Remove use of pgd_list from the Xen guest code Oleg Nesterov <oleg@redhat.com> - 2015-06-13 20:10 +0200
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