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From: Ben Myers <bpm@sgi.com>
To: Jeff Liu <jeff.liu@oracle.com>
Cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: [PATCH] xfs: don't return 0 if generic_segment_checks() find nothing to write
Date: Tue, 16 Apr 2013 13:26:24 -0500	[thread overview]
Message-ID: <20130416182624.GK22182@sgi.com> (raw)
In-Reply-To: <51682CCC.308@oracle.com>

Hey Jeff,

On Fri, Apr 12, 2013 at 11:48:28PM +0800, Jeff Liu wrote:
> From: Jie Liu <jeff.liu@oracle.com>
> 
> At xfs_file_aio_write(), we just return 0 which means a successfully operation if the ocount
> is evaluated to 0 at generic_segment_checks().  Generally, it'll occurred if the specified
> write count is 0 from the user space.  However, for example, if the given offset is over the
> maximum file size limitation although nothing would be written into the file, in this case,
> the underlying file system should detect this issue and return a proper errno instead.
> Hence, the beginning pre-checking up against ocount would conceal some real cause and confuse
> the user space program maybe.
> 
> To fix it, we can delay the write count verification until xfs_file_aio_write_checks() is done.

Could you wrap these around 72 columns or so in the future?  Don't worry
about reposting this one unless something technical comes up.

Thanks,
	Ben

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  reply	other threads:[~2013-04-16 18:26 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-12 15:48 [PATCH] xfs: don't return 0 if generic_segment_checks() find nothing to write Jeff Liu
2013-04-16 18:26 ` Ben Myers [this message]
2013-04-16 18:35   ` Jeff Liu

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