On Thu, Mar 21, 2013 at 07:59:25PM +0100, Michael Landin Hostbaek wrote: > > On Mar 21, 2013, at 8:58 AM, Konstantin Belousov <kostik...@gmail.com> wrote: > > > On Wed, Mar 20, 2013 at 09:14:37PM -0400, Rick Macklem wrote: > >> Well, read/write sharing of files over NFS is pretty rare, so I suspect > >> a truncation of a file by another client (or locally in the NFS server) > >> is a rare event. As such, not invalidating the buffers here doesn't seem > >> like a big issue? (The client uses np->n_size to determine EOF.) > >> > >> Also, I think close-to-open consistency will typically throw away the > >> buffers on the next open when it sees the mtime changed. (Yes, there > >> won't necessarily be another open, but...) > > nfs buffers are VMIO. Each VMIO buffer wires the pages it references. > > Wired pages cannot be freed by vnode_pager_setsize() if the file is > > truncated. > > Should I wait for a new patch, or should I give the one you sent yesterday a > try? > > Thanks,
You should use the r248567 + r248581.
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