linux-kernel - Re: [PATCH] [RESEND] fs: cachefiles: Add support for large files in filesystem caching

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Date:	Tue, 19 Jun 2012 09:58:43 +0200
From:	justin <jlec@...too.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Suresh Jayaraman <sjayaraman@...e.com>,
	David Howells <dhowells@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-cachefs@...hat.com
Subject: Re: [PATCH] [RESEND] fs: cachefiles: Add support for large files
 in filesystem caching

On 19/06/12 09:52, Andrew Morton wrote:
> On Tue, 19 Jun 2012 10:57:27 +0530 Suresh Jayaraman <sjayaraman@...e.com> wrote:
> 
>>> How extensively was this change tested?  Please describe the testing
>>> which was performed?
>>>
>>
>> The original patch was tested by mounting a NFS share with fscache
>> option enabled, do a md5sum on a nfs file larger than 2GB and ensure
>> that the file is getting cached by fscache (watch cache size growing)
>> on x86_64. 
> 
> Well it will need a lot more coverage testing than that.  truncate? 
> expanding truncate?  write, lseek, pwrite, pread(), mmap(MAP_SHARED),
> behavior at the new max file size (what is that?), etc.
> 

Hello,

I am using this patch since the 2.6.3* linux, while working with files
>4 Gb on a daily bases. This isn't a testsuite, but it worked fine for
me all the time.

How would such testsuite you request look like? Anybody willing to write it?

Thanks,
Justin



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