From: "Bron Gondwana" <brong@fastmail.fm>
To: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"Nick Piggin" <npiggin@suse.de>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Linus Torvalds" <torvalds@linux-foundation.org>
Cc: " Rob Mueller" <robm@fastmail.fm>
Subject: Re: BUG: mmapfile/writev spurious zero bytes (x86_64/not i386, bisected, reproducable)
Date: Tue, 17 Jun 2008 16:02:50 +1000 [thread overview]
Message-ID: <1213682570.13708.1258839317@webmail.messagingengine.com> (raw)
In-Reply-To: <1213682410.13174.1258837181@webmail.messagingengine.com>
On Tue, 17 Jun 2008 16:00:10 +1000, "Bron Gondwana" <brong@fastmail.fm> said:
> I apologise for the length of the attached C program. I tried
> to make it shorter, but kept not tickling the bug. There's also
> another advantage of keeping it like this - it closely mirrors the
> Cyrus behaviour, to the point where the output is a valid skiplist
> file.
And I appear to have sent the one without the usage comments at the top.
Here they are:
* USAGE:
* $ gcc -g maptest.c
* $ ./a.out z
* $ hexdump -C z.NEW
*
* Notice the block of zero byte records appearing within
* the output.
*
* Run with a second argument:
*
* $ ./a.out z 1
* $ hexdump -C z.NEW
*
* No more zeros!
Bron.
--
Bron Gondwana
brong@fastmail.fm
next prev parent reply other threads:[~2008-06-17 6:26 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-17 6:00 BUG: mmapfile/writev spurious zero bytes (x86_64/not i386, bisected, reproducable) Bron Gondwana
2008-06-17 6:02 ` Bron Gondwana [this message]
2008-06-17 17:08 ` Linus Torvalds
2008-06-17 17:45 ` Linus Torvalds
2008-06-17 20:16 ` Linus Torvalds
2008-06-17 20:41 ` Linus Torvalds
2008-06-17 21:06 ` Linus Torvalds
2008-06-17 21:16 ` Andi Kleen
2008-06-17 21:24 ` Linus Torvalds
2008-06-17 21:30 ` Andi Kleen
2008-06-17 21:37 ` Linus Torvalds
2008-06-17 21:36 ` Al Viro
2008-06-17 21:42 ` Andi Kleen
2008-06-17 21:49 ` Linus Torvalds
2008-06-17 22:11 ` Al Viro
2008-06-17 22:21 ` Andi Kleen
2008-06-18 6:22 ` Nick Piggin
2008-06-17 21:20 ` Linus Torvalds
2008-06-18 2:27 ` Bron Gondwana
2008-06-18 3:14 ` Bron Gondwana
2008-06-18 4:03 ` Linus Torvalds
2008-06-18 5:11 ` Cyrus mmap vs lseek/write usage - (WAS: BUG: mmapfile/writev spurious zero bytes (x86_64/not i386, bisected, reproducable)) Bron Gondwana
2008-06-18 16:22 ` Linus Torvalds
2008-06-18 23:45 ` Robert Mueller
2008-06-19 0:20 ` Linus Torvalds
2008-10-03 11:44 ` BUG: mmapfile/writev spurious zero bytes still in the wild Bron Gondwana
2008-10-03 13:07 ` Andrew Morton
2008-10-04 0:13 ` Bron Gondwana
2008-06-17 21:15 ` BUG: mmapfile/writev spurious zero bytes (x86_64/not i386, bisected, reproducable) Andi Kleen
2008-06-17 20:58 ` Andi Kleen
2008-06-17 21:14 ` Linus Torvalds
2008-06-17 21:26 ` Andi Kleen
2008-06-17 21:31 ` Linus Torvalds
2008-06-17 21:34 ` Linus Torvalds
2008-06-17 21:34 ` Andi Kleen
2008-06-17 21:46 ` Linus Torvalds
2008-06-18 6:10 ` Nick Piggin
2008-06-18 2:21 ` Bron Gondwana
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