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    SubjectRe: invalidate_inode_pages in 2.5.32/3
    On Friday 13 September 2002 01:23, Rik van Riel wrote:
    > On Thu, 12 Sep 2002, Andrew Morton wrote:
    > > Rik van Riel wrote:
    > > > invalidate_page(struct page * page) {
    > > That's the bottom-up approach. The top-down (vmtruncate) approach
    > > would also work, if the locking is suitable.
    > The top-down approach will almost certainly be most efficient when
    > invalidating a large chunk of a file (truncate, large file locks)
    > while the bottom-up approach is probably more efficient when the
    > system invalidates very few pages (small file lock, cluster file
    > system mmap() support).

    The bottom-up approach is the one we want to use when we'd otherwise
    skip a page in invalidate_inode_pages. This is the rare case. On the
    face of it, this works out very well. Just have to think about
    interactions now - I don't see any, but I haven't really gone hunting

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