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Message-ID: <CA+55aFzv4kQitzhWgxRAi5XXM30f70d4dbTGkr7t=fZSh4r3Ow@mail.gmail.com>
Date: Fri, 8 Jul 2016 09:19:04 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: Kees Cook <keescook@...omium.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Rik van Riel <riel@...hat.com>,
Casey Schaufler <casey@...aufler-ca.com>, PaX Team <pageexec@...email.hu>,
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Subject: Re: [PATCH 0/9] mm: Hardened usercopy
On Fri, Jul 8, 2016 at 1:46 AM, Ingo Molnar <mingo@...nel.org> wrote:
>
> Could you please try to find some syscall workload that does many small user
> copies and thus excercises this code path aggressively?
Any stat()-heavy path will hit cp_new_stat() very heavily. Think the
usual kind of "traverse the whole tree looking for something". "git
diff" will do it, just checking that everything is up-to-date.
That said, other things tend to dominate.
Linus
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