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    SubjectRe: invalidate_inode_pages in 2.5.32/3
    Daniel Phillips wrote:
    >
    > > > void invalidate_inode_pages(struct inode *inode)
    > > > {
    > > > truncate_inode_pages(mapping, 0);
    > > > }
    > > >
    > > > Is it any harder than that?
    > >
    > > Pretty much - need to leave i_size where it was.
    >
    > This doesn't touch i_size.

    Sorry - I was thinking vmtruncate(). truncate_inode_pages() would
    result in all the mmapped pages becoming out-of-date anonymous
    memory. NFS needs to take down the pagetables so that processes
    which are mmapping the file which changed on the server will take
    a major fault and read a fresh copy. I believe.
    -
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