From: Junio C Hamano <gitster@pobox.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Git Mailing List <git@vger.kernel.org>
Subject: Re: Optimizing writes to unchanged files during merges?
Date: Fri, 13 Apr 2018 06:46:09 +0900 [thread overview]
Message-ID: <xmqq604w2j4u.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <CA+55aFzLZ3UkG5svqZwSnhNk75=fXJRkvU1m_RHBG54NOoaZPA@mail.gmail.com> (Linus Torvalds's message of "Thu, 12 Apr 2018 14:14:24 -0700")
Linus Torvalds <torvalds@linux-foundation.org> writes:
> Now, the reason it was marked as changed is that the xfs branch _had_
> in fact changed it, but the changes were already upstream and got
> merged away. But the file still got written out (with the same
> contents it had before the merge), and 'make' obviously only looks at
> modification time, so make rebuilt everything.
Thanks for a clear description of the issue. It does sound
interesting.
next prev parent reply other threads:[~2018-04-12 21:46 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-12 21:14 Optimizing writes to unchanged files during merges? Linus Torvalds
2018-04-12 21:46 ` Junio C Hamano [this message]
2018-04-12 23:17 ` Junio C Hamano
2018-04-12 23:35 ` Linus Torvalds
2018-04-12 23:41 ` Linus Torvalds
2018-04-12 23:55 ` Linus Torvalds
2018-04-13 0:01 ` Linus Torvalds
2018-04-13 7:02 ` Elijah Newren
2018-04-13 17:14 ` Linus Torvalds
2018-04-13 17:39 ` Stefan Beller
2018-04-13 17:53 ` Linus Torvalds
2018-04-13 20:04 ` Elijah Newren
2018-04-13 22:27 ` Junio C Hamano
2018-04-16 1:44 ` Junio C Hamano
2018-04-16 2:03 ` Linus Torvalds
2018-04-16 16:07 ` Lars Schneider
2018-04-16 17:04 ` Ævar Arnfjörð Bjarmason
2018-04-17 17:23 ` Lars Schneider
2018-04-16 17:43 ` Jacob Keller
2018-04-16 17:45 ` Jacob Keller
2018-04-16 22:34 ` Junio C Hamano
2018-04-17 17:27 ` Lars Schneider
2018-04-17 17:43 ` Jacob Keller
2018-04-16 17:47 ` Phillip Wood
2018-04-16 20:09 ` Stefan Haller
2018-04-16 22:55 ` Elijah Newren
2018-04-16 23:03 ` Elijah Newren
2018-04-12 23:18 ` Linus Torvalds
2018-04-13 0:01 ` Elijah Newren
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