Re: [PATCH] dirty pages in memory & co.

["Stephen C. Tweedie" <sct@redhat.com>]

Hi,

On 07 May 1999 09:56:00 -0500, ebiederm+eric@ccr.net (Eric W. Biederman)
said:

>        It looks like I need 2 variations on generic_file_write at the
>        moment. 
>        1) for network filesystems that can get away without filling
>           the page on a partial write.
>        2) for block based filesystems that must fill the page on a
>           partial write because they can't write arbitrary chunks of
>           data.

I'd be very worried by (1): sounds like a partial write followed by a
read of the full page could show up garbage in the page cache if you do
this.  If NFS skips the page clearing for partial writes, how does it
avoid returning garbage later?

--Stephen


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