Linux-Fsdevel Archive on lore.kernel.org
help / color / mirror / Atom feed
From: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
To: Mike Rapoport <rppt@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Andrew Morton <akpm@linux-foundation.org>,
	Andy Lutomirski <luto@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Borislav Petkov <bp@alien8.de>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Christopher Lameter <cl@linux.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Elena Reshetova <elena.reshetova@intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Idan Yaniv <idan.yaniv@ibm.com>,
	Ingo Molnar <mingo@redhat.com>,
	James Bottomley <jejb@linux.ibm.com>,
	"Kirill A. Shutemov" <kirill@shutemov.name>,
	Matthew Wilcox <willy@infradead.org>,
	Mike Rapoport <rppt@linux.ibm.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Tycho Andersen <tycho@tycho.ws>, Will Deacon <will@kernel.org>,
	Linux API <linux-api@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	Linux-MM <linux-mm@kvack.org>,
	linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org,
	"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
	<x86@kernel.org>
Subject: Re: [PATCH 3/6] mm: introduce secretmemfd system call to create "secret" memory areas
Date: Tue, 21 Jul 2020 12:59:22 +0200	[thread overview]
Message-ID: <CAKgNAkgdOZXsVVkYveqnjODOr_cHYWiRssw2Tu1dZEBd+GnOnA@mail.gmail.com> (raw)
In-Reply-To: <20200720092435.17469-4-rppt@kernel.org>

Hi Mike,

On Mon, 20 Jul 2020 at 11:26, Mike Rapoport <rppt@kernel.org> wrote:
>
> From: Mike Rapoport <rppt@linux.ibm.com>
>
> Introduce "secretmemfd" system call with the ability to create memory areas
> visible only in the context of the owning process and not mapped not only
> to other processes but in the kernel page tables as well.
>
> The user will create a file descriptor using the secretmemfd system call

Without wanting to start a bikeshed discussion, the more common
convention in recently added system calls is to use an underscore in
names that consist of multiple clearly distinct words. See many
examples in  https://man7.org/linux/man-pages/man2/syscalls.2.html.

Thus, I'd suggest at least secret_memfd().

Also, I wonder whether memfd_secret() might not be even better.
There's plenty of precedent for the naming style where related APIs
share a common prefix [1].

Thanks,

Michael

[1] Some examples:

       epoll_create(2)
       epoll_create1(2)
       epoll_ctl(2)
       epoll_pwait(2)
       epoll_wait(2)

       mq_getsetattr(2)
       mq_notify(2)
       mq_open(2)
       mq_timedreceive(2)
       mq_timedsend(2)
       mq_unlink(2)

       sched_get_affinity(2)
       sched_get_priority_max(2)
       sched_get_priority_min(2)
       sched_getaffinity(2)
       sched_getattr(2)
       sched_getparam(2)
       sched_getscheduler(2)
       sched_rr_get_interval(2)
       sched_set_affinity(2)
       sched_setaffinity(2)
       sched_setattr(2)
       sched_setparam(2)
       sched_setscheduler(2)
       sched_yield(2)

       timer_create(2)
       timer_delete(2)
       timer_getoverrun(2)
       timer_gettime(2)
       timer_settime(2)

       timerfd_create(2)
       timerfd_gettime(2)
       timerfd_settime(2)




-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/

  parent reply	other threads:[~2020-07-21 10:59 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-20  9:24 [PATCH 0/6] " Mike Rapoport
2020-07-20  9:24 ` [PATCH 1/6] mm: add definition of PMD_PAGE_ORDER Mike Rapoport
2020-07-20  9:24 ` [PATCH 2/6] mmap: make mlock_future_check() global Mike Rapoport
2020-07-20  9:24 ` [PATCH 3/6] mm: introduce secretmemfd system call to create "secret" memory areas Mike Rapoport
2020-07-20 11:30   ` Arnd Bergmann
2020-07-20 14:20     ` Mike Rapoport
2020-07-20 14:34       ` Arnd Bergmann
2020-07-20 17:46         ` Mike Rapoport
2020-07-20 15:51     ` James Bottomley
2020-07-20 18:08       ` Arnd Bergmann
2020-07-20 19:16         ` James Bottomley
2020-07-20 20:05           ` Arnd Bergmann
2020-07-21 10:59   ` Michael Kerrisk (man-pages) [this message]
2020-07-20  9:24 ` [PATCH 4/6] arch, mm: wire up secretmemfd system call were relevant Mike Rapoport
2020-07-26 17:44   ` Palmer Dabbelt
2020-07-20  9:24 ` [PATCH 5/6] mm: secretmem: use PMD-size pages to amortize direct map fragmentation Mike Rapoport
2020-07-20  9:24 ` [PATCH 6/6] mm: secretmem: add ability to reserve memory at boot Mike Rapoport

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAKgNAkgdOZXsVVkYveqnjODOr_cHYWiRssw2Tu1dZEBd+GnOnA@mail.gmail.com \
    --to=mtk.manpages@gmail.com \
    --cc=akpm@linux-foundation.org \
    --cc=arnd@arndb.de \
    --cc=bp@alien8.de \
    --cc=catalin.marinas@arm.com \
    --cc=cl@linux.com \
    --cc=dan.j.williams@intel.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=elena.reshetova@intel.com \
    --cc=hpa@zytor.com \
    --cc=idan.yaniv@ibm.com \
    --cc=jejb@linux.ibm.com \
    --cc=kirill@shutemov.name \
    --cc=linux-api@vger.kernel.org \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-nvdimm@lists.01.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=luto@kernel.org \
    --cc=mingo@redhat.com \
    --cc=palmer@dabbelt.com \
    --cc=paul.walmsley@sifive.com \
    --cc=peterz@infradead.org \
    --cc=rppt@kernel.org \
    --cc=rppt@linux.ibm.com \
    --cc=tglx@linutronix.de \
    --cc=tycho@tycho.ws \
    --cc=viro@zeniv.linux.org.uk \
    --cc=will@kernel.org \
    --cc=willy@infradead.org \
    --cc=x86@kernel.org \
    --subject='Re: [PATCH 3/6] mm: introduce secretmemfd system call to create "secret" memory areas' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).