From: Eric Dumazet <edumazet@google.com>
To: Mateusz Guzik <mguzik@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
mszeredi@redhat.com, linux-fsdevel@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] vfs: grab the lock instead of blocking in __fd_install during resizing
Date: Tue, 3 Oct 2017 07:41:11 -0700 [thread overview]
Message-ID: <CANn89iLNATFw_q2KVsmCq+gtu3LbJ6mz-5JqgrNnwvsZUz5D+g@mail.gmail.com> (raw)
In-Reply-To: <1507028295-9353-3-git-send-email-mguzik@redhat.com>
On Tue, Oct 3, 2017 at 3:58 AM, Mateusz Guzik <mguzik@redhat.com> wrote:
> Explicit locking in the fallback case provides a safe state of the
> table. Getting rid of blocking semantics makes __fd_install usable
> again in non-sleepable contexts, which easies backporting efforts.
>
> There is a side effect of slightly nicer assembly for the common case
> as might_sleep can now be removed.
>
> Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
> ---
> Documentation/filesystems/porting | 4 ----
> fs/file.c | 11 +++++++----
> 2 files changed, 7 insertions(+), 8 deletions(-)
Nice change !
Reviewed-by: Eric Dumazet <edumazet@google.com>
next prev parent reply other threads:[~2017-10-03 14:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-03 10:58 [PATCH 0/2] minor fd cleanup Mateusz Guzik
2017-10-03 10:58 ` [PATCH 1/2] vfs: stop clearing close on exec when closing a fd Mateusz Guzik
2017-10-03 14:39 ` Eric Dumazet
2017-10-03 10:58 ` [PATCH 2/2] vfs: grab the lock instead of blocking in __fd_install during resizing Mateusz Guzik
2017-10-03 14:41 ` Eric Dumazet [this message]
2017-10-04 13:55 ` Matthew Wilcox
2017-10-04 14:00 ` Eric Dumazet
2017-10-04 14:58 ` Matthew Wilcox
2017-10-04 15:04 ` Eric Dumazet
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