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    SubjectRe: 2.4.0-test10-pre3:Oops in mm/filemap.c:filemap_write_pa
    Date
    Trond Myklebust writes:
    > It's probably particularly nasty under NFS because of
    > invalidate_inode_pages(). The latter empties the page cache whenever
    > we can no longer trust it and calls remove_inode_page() on every
    > unlocked page. It won't care whether the page is mmapped or not.
    >
    > My guess is therefore that the line setting 'page->mapping = NULL' in
    > __remove_inode_page() is a candidate for scrutiny...

    Indeed. page->mapping is set to NULL in two places, one in
    __remove_inode_pages() and the other one in the swap code after we've
    checked that it was NULL. I hadn't found the particular call trace
    that caused us to ended up in __remove_inode_page() though with this
    page.
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