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From: Jeff King <peff@peff.net>
To: Mike Hommey <mh@glandium.org>
Cc: git@vger.kernel.org, gitster@pobox.com
Subject: Re: [PATCH 2/2] Use xmmap_gently instead of xmmap in use_pack
Date: Wed, 15 May 2019 23:34:22 -0400
Message-ID: <20190516033422.GD4596@sigill.intra.peff.net> (raw)
In-Reply-To: <20190516003736.25544-2-mh@glandium.org>

On Thu, May 16, 2019 at 09:37:36AM +0900, Mike Hommey wrote:

> use_pack has its own error message on mmap error, but it can't be
> reached when using xmmap, which dies with its own error.

Makes sense. Amusingly this xmmap comes from c4712e4553 (Replace mmap
with xmmap, better handling MAP_FAILED., 2006-12-24), which specifically
moved everything to xmmap for its error handling, and dropped all of the
MAP_FAILED checks. But it forgot to remove this one.

So we could also go the other way, and just remove the unreachable
check. I do think the error from use_pack() is better though, so I like
the direction you went.

-Peff

  reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-15 10:56 Closing fds twice when using remote helpers Mike Hommey
2019-05-15 11:43 ` Ævar Arnfjörð Bjarmason
2019-05-15 17:59   ` Johannes Sixt
2019-05-15 22:08     ` Mike Hommey
2019-05-15 23:53       ` Jeff King
2019-05-16  0:48         ` Mike Hommey
2019-05-16  3:28           ` Jeff King
2019-05-16  8:35             ` Mike Hommey
2019-05-16 21:47               ` Jeff King
2019-05-16 22:02                 ` Mike Hommey
2019-05-16  0:31 ` Mike Hommey
2019-05-16  0:37   ` [PATCH 1/2] dup() the input fd for fast-import used for " Mike Hommey
2019-05-16  0:37     ` [PATCH 2/2] Use xmmap_gently instead of xmmap in use_pack Mike Hommey
2019-05-16  3:34       ` Jeff King [this message]
2019-05-16  3:28     ` [PATCH 1/2] dup() the input fd for fast-import used for remote helpers Jeff King

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