linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: "Theodore Ts'o" <tytso@mit.edu>
To: Ryan Cumming <ryan@completely.kicks-ass.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [BK PATCH] Add ext3 indexed directory (htree) support
Date: Thu, 26 Sep 2002 09:23:03 -0400	[thread overview]
Message-ID: <20020926132303.GB5612@think.thunk.org> (raw)
In-Reply-To: <200209260041.59855.ryan@completely.kicks-ass.org>

On Thu, Sep 26, 2002 at 12:41:54AM -0700, Ryan Cumming wrote:
> 
> Using GCC 2.95.4 seems to stabilize dir_index nicely, both before and after 
> the hdparm -fD run. Only the kernel was recompiled with 2.95.4, I reused the 
> original GCC 3.2 compiled e2fsprogs.
> 

Thanks for willing to be a Guienea Pig; now I know what to look for.  

I didn't have a chance to answer your question last night about how to
test it without risking your data, but the answer is that that patch
doesn't change how ext3 works unless the dir_index feature flag is
set.  So it would have been safe to boot the patched, kernel, and then
create a test filesystem in a plain file, and the mount it using the
loop device:

	dd if=/dev/zero of=test.img bs=1024k count=32
	mke2fs -f -j test.img
	mount -o loop test.img /mnt

So I'll take a look at things and try to figure out what GCC bug we
might be triggering.  It's strange; it's not like the code using
inline instructions, or anything else that might be triggering a GCC
bug or discrepancy between how GCC 2.95.4 and GCC 3.2 works.  In fact,
it's all relatively straightforward C code.

Anyway, thanks.

						- Ted


  reply	other threads:[~2002-09-26 13:18 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-25 20:03 tytso
2002-09-25 20:34 ` Andreas Dilger
2002-09-25 20:41 ` Dave Jones
2002-09-25 21:08   ` Andreas Dilger
2002-09-25 21:34   ` Theodore Ts'o
2002-09-25 22:54 ` Jeff Garzik
2002-09-25 23:29   ` Theodore Ts'o
2002-09-25 23:45     ` Ryan Cumming
2002-09-26  3:27       ` Theodore Ts'o
2002-09-26  5:23         ` Ryan Cumming
2002-09-26  5:57           ` Theodore Ts'o
2002-09-26  6:22             ` Ryan Cumming
2002-09-26 14:05               ` Theodore Ts'o
2002-09-26  6:25             ` Ryan Cumming
2002-09-26 11:25               ` Daniel Egger
2002-09-26  7:41             ` Ryan Cumming
2002-09-26 13:23               ` Theodore Ts'o [this message]
2002-09-26 15:42               ` Theodore Ts'o
2002-09-26 19:08                 ` Ryan Cumming
2002-09-26 19:51                   ` Horst von Brand
2002-09-26 19:59                     ` Ryan Cumming
2002-09-26 22:04                   ` Theodore Ts'o
2002-09-26 22:53                     ` Ryan Cumming
2002-09-26 23:57                       ` Theodore Ts'o
2002-09-27  1:00                         ` Ryan Cumming
2002-09-27  3:24                           ` Theodore Ts'o
2002-09-27  4:12                         ` Andreas Dilger
2002-09-27  7:55                           ` Ryan Cumming
2002-09-28  1:20                           ` Ryan Cumming
2002-09-28  1:46                             ` Ryan Cumming
2002-09-28 14:13                             ` Theodore Ts'o
2002-09-28 14:18                               ` Theodore Ts'o
2002-09-28 22:35                                 ` Ryan Cumming
2002-09-28 17:27                               ` [Ext2-devel] " Andreas Dilger
2002-09-28 18:43                                 ` chrisl
2002-09-28 19:45                                 ` chrisl
2002-09-28 22:30                               ` Ryan Cumming
2002-09-29  7:03                               ` [PATCH] fix htree dir corrupt after fsck -fD chrisl
2002-09-29  8:16                                 ` Ryan Cumming
2002-09-29  8:36                                   ` Ryan Cumming
2002-09-30  2:46                                   ` Ryan Cumming
2002-09-29 14:13                                 ` Theodore Ts'o
2002-09-25 23:31 ` [BK PATCH] Add ext3 indexed directory (htree) support Daniel Egger
2002-09-26  0:32   ` Randy.Dunlap
2002-09-26  0:50 ` Aaron Lehmann
2002-09-26  3:28   ` Theodore Ts'o
2002-10-02  9:11 tytso

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20020926132303.GB5612@think.thunk.org \
    --to=tytso@mit.edu \
    --cc=linux-kernel@vger.kernel.org \
    --cc=ryan@completely.kicks-ass.org \
    --subject='Re: [BK PATCH] Add ext3 indexed directory (htree) support' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).