From mboxrd@z Thu Jan  1 00:00:00 1970
From: Max <relf@unn.ac.ru>
Subject: Re: files of size larger than fs size
Date: Thu, 17 Mar 2005 13:48:30 -0800
Message-ID: <4239FB2E.2080900@unn.ac.ru>
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Cc: Bryan Henderson <hbryan@us.ibm.com>,
	fsdevel <linux-fsdevel@vger.kernel.org>,
	Phillip Lougher <phillip@lougher.demon.co.uk>
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To: Dave Kleikamp <shaggy@austin.ibm.com>
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Dave,

Shouldn't "fread(&data,sizeof(data),1,f)" and "read(fn, &data, 
sizeof(data))" produce identical results?
Is it a bug or what?

Max

Dave Kleikamp wrote:

>With this change, the file size on jfs becomes 2^48 + 4 as expected.
>
>--- jfs_bug.c.orig	2005-03-17 14:18:48.229634648 -0600
>+++ jfs_bug.c	2005-03-17 15:32:45.952750104 -0600
>@@ -13,12 +13,14 @@ int data = 0;
> struct flock fl;
> 
> void read1() {
>-    size_t rc = fread(&data,sizeof(data),1,f);
>+    /* size_t rc = fread(&data,sizeof(data),1,f); */
>+    size_t rc = read(fn, &data, sizeof(data));
>     printf("read() rc = %llu\n",rc);
> }
> 
> void write1() {
>-    size_t rc = fwrite(&data,sizeof(data),1,f);
>+    /* size_t rc = fwrite(&data,sizeof(data),1,f); */
>+    size_t rc = write(fn, &data, sizeof(data));
>     printf("write() rc = %llu\n",rc);
> }
> 
>
>  
>