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Message-ID: <20051121231449.92787.qmail@web34114.mail.mud.yahoo.com>
Date: Mon, 21 Nov 2005 15:14:49 -0800 (PST)
From: Kenny Simpson <theonetruekenny@yahoo.com>
Subject: Re: infinite loop? with mmap, nfs, pwrite, O_DIRECT
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Andrew Morton <akpm@osdl.org>, cel@citi.umich.edu,
       linux-kernel@vger.kernel.org
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--- Trond Myklebust <trond.myklebust@fys.uio.no> wrote:
> Ah... It is the pwrite() _after_ the call to mmap() that fails....
> 
> OK, does the following patch fix it?

YES!

open("/mnt/bar", O_RDWR|O_CREAT|O_TRUNC|O_DIRECT|O_LARGEFILE, 0666) = 3
pwrite(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 4299161600) = 4096
mmap2(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_SHARED, 3, 0x100200) = 0xb7c26000
pwrite(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 4301258752) = 4096
exit_group(0)                           = ?

I'll re-run my original test(s) tomorrow.
Thanks again!

-Kenny


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