[Linux-cachefs] Writing to the cache

[Derek Siu]

I am using 2.6.17 and yes, I am using cachefiles. I don't think it is
the problem of the patches itself since it works great with nfs. This
problem happens only when my module directly calls fscache_write_page.
After that, I try to copy the same file (this file should be in the
cache by now) from the nfs server. However, the client cannot find the
file from the cache. Do I have to somehow inform the nfs client that
the file is in the cache already?

Derek

> Derek Siu <golf1123 at gmail.com> wrote:
>
> > After I called fscache_write_page to write a page to the cache, I
> > called both the fscache_read_or_alloc_page and
> > fscache_read_or_alloc_pages. Only the first function can find the
> > page. The second function returns ENODATA. Do I have to do anything
> > after calling fscache_write_page? I've read through the nfs source but
> > I can't find any special functions being called after
> > fscache_write_page.
>
> It's always possible that the backing file (I presume you are using cachefiles)
> got deleted, though if it does this every time, that would seem surprising.
>
> What version of kernel and patches are you using?
>
> David
>
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