From: Junio C Hamano <junkio@cox.net>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: git@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>
Subject: Re: First cut at git port to Cygwin
Date: Sat, 08 Oct 2005 11:44:01 -0700 [thread overview]
Message-ID: <7vr7avrgr2.fsf@assigned-by-dhcp.cox.net> (raw)
In-Reply-To: <Pine.LNX.4.63.0510082023130.25971@wbgn013.biozentrum.uni-wuerzburg.de> (Johannes Schindelin's message of "Sat, 8 Oct 2005 20:27:06 +0200 (CEST)")
Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:
> Am I missing something? I don't see where the changes are written back to
> the fd. After all, mmap() is called with PROT_WRITE...
PROT_WRITE is true, but we do MAP_PRIVATE, and if I recall
correctly we do not write file via mmap -- at least we do not
intend to.
- index file is mapped for reading, long ago it was mapped
read-only but these days we do PROT_WRITE, but updates are
done via opening a new file and writing afresh.
- objects are mapped for reading, but, never updated once
created. Creation side is regular open - write - close.
- diff reads original by mapping, but obviously has no business
writing.
- local-fetch reads original by mapping for copying.
> *shameless plug* Of course, this problem does not come up with
> my NO_MMAP patch.
Yes. It might have been overkill that you supported writing
changes back, though.
.
next prev parent reply other threads:[~2005-10-08 18:44 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-29 0:53 First cut at git port to Cygwin H. Peter Anvin
2005-09-29 4:30 ` Junio C Hamano
2005-09-29 5:07 ` H. Peter Anvin
2005-09-29 4:46 ` Martin Langhoff
2005-09-29 5:13 ` Junio C Hamano
2005-09-29 6:19 ` H. Peter Anvin
2005-09-29 8:46 ` Johannes Schindelin
2005-09-29 16:11 ` H. Peter Anvin
2005-09-29 17:25 ` H. Peter Anvin
2005-09-30 10:02 ` Junio C Hamano
2005-09-30 17:01 ` H. Peter Anvin
2005-09-30 19:08 ` H. Peter Anvin
2005-10-04 12:31 ` Alex Riesen
2005-10-04 13:06 ` Alex Riesen
2005-10-04 14:06 ` H. Peter Anvin
2005-10-05 3:15 ` Christopher Faylor
2005-10-04 15:03 ` H. Peter Anvin
2005-10-05 3:16 ` Christopher Faylor
2005-10-05 5:25 ` H. Peter Anvin
2005-10-05 11:24 ` Alex Riesen
2005-10-05 15:46 ` Alex Riesen
2005-10-05 15:54 ` Christopher Faylor
2005-10-05 16:09 ` Davide Libenzi
2005-10-05 16:15 ` Christopher Faylor
2005-10-05 16:23 ` H. Peter Anvin
2005-10-05 16:28 ` Christopher Faylor
2005-10-05 17:29 ` Davide Libenzi
2005-10-05 19:17 ` Alex Riesen
2005-10-05 20:29 ` Christopher Faylor
2005-10-06 9:05 ` Alex Riesen
2005-10-06 10:07 ` Alex Riesen
2005-10-07 12:44 ` Alex Riesen
2005-10-07 15:34 ` Linus Torvalds
2005-10-07 20:54 ` Alex Riesen
2005-10-07 21:22 ` Alex Riesen
2005-10-07 21:29 ` Chuck Lever
2005-10-07 21:39 ` Alex Riesen
2005-10-08 16:11 ` Linus Torvalds
2005-10-08 17:38 ` Elfyn McBratney
2005-10-08 17:43 ` Elfyn McBratney
2005-10-08 18:27 ` Johannes Schindelin
2005-10-08 18:44 ` Junio C Hamano [this message]
2005-10-08 19:04 ` Johannes Schindelin
2005-10-08 21:10 ` Junio C Hamano
2005-10-08 22:06 ` Johannes Schindelin
2005-10-10 18:43 ` H. Peter Anvin
2005-10-10 19:01 ` Johannes Schindelin
2005-10-10 19:26 ` H. Peter Anvin
2005-10-10 19:42 ` Johannes Schindelin
2005-10-10 20:21 ` Junio C Hamano
2005-10-10 20:34 ` Junio C Hamano
2005-10-10 20:52 ` H. Peter Anvin
2005-10-10 20:27 ` Daniel Barkalow
2005-10-08 18:49 ` Alex Riesen
2005-10-09 20:40 ` Commit text BEFORE the dashes (Re: First cut at git port to Cygwin) Matthias Urlichs
[not found] ` <7vfyrdyre5.fsf@assigned-by-dhcp.cox.net>
2005-10-07 23:45 ` First cut at git port to Cygwin Alex Riesen
2005-10-08 1:00 ` Elfyn McBratney
2005-10-10 18:45 ` H. Peter Anvin
2005-10-05 13:16 ` Jonas Fonseca
2005-10-05 13:58 ` Johannes Schindelin
2005-10-05 15:52 ` [PATCH] Fix symbolic ref validation Jonas Fonseca
2005-10-05 16:54 ` Junio C Hamano
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