94 lines
4.0 KiB
Markdown
94 lines
4.0 KiB
Markdown
---
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created_at: '2016-09-22T07:38:19.000Z'
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title: 'Linus on btime: “Let’s wait five years” (2010)'
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url: http://lkml.iu.edu/hypermail/linux/kernel/1007.2/02325.html
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author: wener
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points: 73
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story_text:
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comment_text:
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num_comments: 40
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story_id:
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story_title:
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story_url:
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parent_id:
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created_at_i: 1474529899
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_tags:
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- story
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- author_wener
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- story_12555160
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objectID: '12555160'
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year: 2010
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---
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[Source](http://lkml.iu.edu/hypermail/linux/kernel/1007.2/02325.html "Permalink to Linux-Kernel Archive: Re: [PATCH 02/18] xstat: Add a pair of system calls to make extended file stats available [ver #6]")
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# Linux-Kernel Archive: Re: [PATCH 02/18] xstat: Add a pair of system calls to make extended file stats available [ver #6]
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# Re: [PATCH 02/18] xstat: Add a pair of system calls to make extended file stats available [ver #6]
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**From: **Linus Torvalds
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**Date: ** Thu Jul 22 2010 - 11:16:18 EST
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* **Next message: ** [ Milton Miller: "[PATCH] setlocalversion: fix version for untaged nontip mercurial revs"][1]
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* **Previous message: ** [ Kenji Kaneshige: "Re: [PATCH] x86: ioremap: fix wrong physical address handling inPAT code"][2]
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* **In reply to: ** [ Jan Engelhardt: "Re: [PATCH 02/18] xstat: Add a pair of system calls to make extendedfile stats available [ver #6]"][3]
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* **Next in thread: ** [ Volker Lendecke: "Re: [PATCH 02/18] xstat: Add a pair of system calls to makeextended file stats available [ver #6]"][4]
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* **Messages sorted by: [**[ date ]][5] [[ thread ]][6] [[ subject ]][7] [[ author ]][8]
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* * *
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On Thu, Jul 22, 2010 at 5:17 AM, Volker Lendecke
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<Volker.Lendecke@xxxxxxxxx> wrote:
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>_ On Thu, Jul 22, 2010 at 01:14:47PM +0100, David Howells wrote:_
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>_> Jan Engelhardt <jengelh@xxxxxxxxxx> wrote:_
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>_>_
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>_> > Linux already has a creation time field, it's called otime (there is no "b"_
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>_> > in "creation"), and you will find scattered fragments of that all over the_
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>_> > kernel (foremost, fs/jfs/, now btrfs, and I also notice sysvipc having_
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>_> > something with that name)._
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>_>_
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>_> It is? It's called crtime in Ext4. st_btime, however, would be compatible_
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>_> with BSD's stat, and Samba would just use it by way of autoconf magic if it_
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>_> appeared._
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>__
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>_ Samba has the following check:_
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>__
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>_ # recent FreeBSD, NetBSD have creation timestamps called birthtime:_
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>_ AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec])_
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>_ AC_CHECK_MEMBERS([struct stat.st_birthtime], AC_CHECK_MEMBERS([struct stat.st_birthtimensec]))_
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>__
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>_ and the supporting code around that. "birth" might also be_
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>_ where the "b" comes from :-)_
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Oh wow. And all of this just convinces me that we should _not_ do any
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of this, since clearly it's all totally useless and people can't even
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agree on a name.
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Let's wait five years and see if there is actually any consensus on it
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being needed and used at all, rather than rush into something just
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because "we can".
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Linus
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\--
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To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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Please read the FAQ at <http://www.tux.org/lkml/>
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* * *
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* **Next message: ** [ Milton Miller: "[PATCH] setlocalversion: fix version for untaged nontip mercurial revs"][1]
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* **Previous message: ** [ Kenji Kaneshige: "Re: [PATCH] x86: ioremap: fix wrong physical address handling inPAT code"][2]
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* **In reply to: ** [ Jan Engelhardt: "Re: [PATCH 02/18] xstat: Add a pair of system calls to make extendedfile stats available [ver #6]"][3]
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* **Next in thread: ** [ Volker Lendecke: "Re: [PATCH 02/18] xstat: Add a pair of system calls to makeextended file stats available [ver #6]"][4]
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* **Messages sorted by: [**[ date ]][5] [[ thread ]][6] [[ subject ]][7] [[ author ]][8]
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[1]: http://lkml.iu.edu/02326.html
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[2]: http://lkml.iu.edu/02324.html
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[3]: http://lkml.iu.edu/02269.html
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[4]: http://lkml.iu.edu/02332.html
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[5]: http://lkml.iu.edu/date.html#02325
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[6]: http://lkml.iu.edu/index.html#02325
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[7]: http://lkml.iu.edu/subject.html#02325
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[8]: http://lkml.iu.edu/author.html#02325
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