Messages in this thread | | | From | Linus Torvalds <> | Date | Wed, 1 Apr 2020 19:05:59 -0700 | Subject | Re: [PATCH] signal: Extend exec_id to 64bits |
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On Wed, Apr 1, 2020 at 6:36 PM Jann Horn <jannh@google.com> wrote: > > Since the read is already protected by the tasklist_lock, an > alternative might be to let the execve path also take that lock to > protect the sequence number update,
No.
tasklist_lock is aboue the hottest lock there is in all of the kernel.
We're not doing stupid things for theoretical issues.
Stop this crazy argument.
A comment - sure. 64-bit atomics or very expensive locks? Not a chance.
Linus
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