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SubjectRe: NFS mountned directory and apache2 (2.5.47)
On Fri, Nov 15, 2002 at 09:53:03PM +0100, Trond Myklebust wrote:
> > Linus removed that in early 2.5 because it led to kmap()
> > deadlocks. sendfile can fail with EINVAL and userspace must
> > not rely on it working on any object.
>
> Fair enough. The kernel may not be the appropriate place for providing
> such an emulation, but there's no reason why glibc shouldn't be able
> to do so for the case where sendfile returns EINVAL.

*nod*

> However none of this changes the matter of the NFS client. The latter
> *does* support a pagecache, and so the one-line patch is appropriate.

just a little bit more then one line :) nfs needs to do the same
revalidation as in nfs_file_read and then call generic_file_sendfile.

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