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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Junio C Hamano <gitster@pobox.com>
Cc: David Brown <git@davidb.org>, Alex Riesen <raa.lkml@gmail.com>,
	Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Johannes Sixt <j.sixt@viscovery.net>,
	git@vger.kernel.org
Subject: Re: [PATCH] Make use of stat.ctime configurable
Date: Mon, 28 Jul 2008 19:01:40 -0700 (PDT)	[thread overview]
Message-ID: <alpine.LFD.1.10.0807281857140.3486@nehalem.linux-foundation.org> (raw)
In-Reply-To: <alpine.LFD.1.10.0807281853520.3486@nehalem.linux-foundation.org>



On Mon, 28 Jul 2008, Linus Torvalds wrote:
> 
> Hmm. I think that's just a plain POSIX oddity. There's no real "reason" 
> for it, except the historical one: in really old UNIX terms, rename used 
> to be a "link+unlink".

Side note: a lot of the mtime/ctime/atime rules are really pretty 
arbitrary. They've grown over time, and have various historic reasons.
'ctime' in particular is more arbitrary than most, and I don't at all 
guarantee that all Unixes will work exactly the same wrt ctime and rename. 

In fact, I -can- guarantee that some older versions of Linux haven't 
always updated ctime on renames, for example, and it's probably still 
per-filesystem.

			Linus

  reply	other threads:[~2008-07-29  2:05 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-21 17:35 [PATCH] Fix update-index --refresh for submodules if stat(2) returns st_size 0 Alex Riesen
2008-07-21 18:20 ` Johannes Schindelin
2008-07-21 19:43   ` Alex Riesen
2008-07-21 23:26     ` Johannes Schindelin
2008-07-22  8:07     ` Junio C Hamano
2008-07-22 16:49       ` Alex Riesen
2008-07-22  7:17 ` Johannes Sixt
2008-07-22 16:46   ` Alex Riesen
2008-07-22 16:59     ` Johannes Sixt
2008-07-22 17:28   ` Junio C Hamano
2008-07-22 19:39     ` [PATCH] Build configuration to skip ctime for modification test Alex Riesen
2008-07-22 20:17       ` Johannes Schindelin
2008-07-22 20:31         ` Alex Riesen
2008-07-23  0:12           ` Junio C Hamano
2008-07-23 16:46             ` Alex Riesen
2008-07-23 16:59               ` Johannes Schindelin
2008-07-23 19:16                 ` Alex Riesen
2008-07-25  2:00                   ` Linus Torvalds
2008-07-25  5:55                     ` Alex Riesen
2008-07-26  0:57                       ` Johannes Schindelin
2008-07-26 15:38                         ` [PATCH] Make use of stat.ctime configurable Alex Riesen
2008-07-27 19:46                           ` Junio C Hamano
2008-07-27 19:46                           ` Junio C Hamano
2008-07-28  6:31                             ` Alex Riesen
2008-07-28 16:04                               ` David Brown
2008-07-28 16:09                                 ` Linus Torvalds
2008-07-28 21:49                                   ` Alex Riesen
2008-07-29  1:16                                   ` Junio C Hamano
2008-07-29  1:23                                     ` Linus Torvalds
2008-07-29  1:31                                       ` Junio C Hamano
2008-07-29  1:41                                         ` David Brown
2008-07-29  2:49                                           ` Junio C Hamano
2008-07-29 10:45                                           ` Johannes Schindelin
2008-07-29  1:55                                         ` Linus Torvalds
2008-07-29  2:01                                           ` Linus Torvalds [this message]
2008-07-29 10:49                                       ` Johannes Schindelin
2008-07-28 16:20                               ` Petr Baudis
2008-07-28 21:47                                 ` [PATCH] Improve the placement of core.trustctime in the documentation Alex Riesen
2008-07-29  6:23                                   ` Junio C Hamano
2008-07-24 19:00             ` [PATCH] Do not use ctime if file mode is not used Alex Riesen
2008-07-23 16:00           ` git svn throws locale related error when built from source Anton Mostovoy

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