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    SubjectRe: 2.4.0-test10-pre3:Oops in mm/filemap.c:filemap_write_pa
    Date
    Linus Torvalds writes:
    > Can you get a full stack trace?

    filemap_write_page
    filemap_sync
    filemap_unmap
    do_munmap
    sys_munmap

    > How about adding a test in invalidate_inode_pages() like

    (Added, along with a call to drop a stack trace out).

    Yes, this does stop the problem in filemap_write_page. The stack trace
    here shows:

    invalidate_inode_pages
    nfs_zap_caches
    nfs_lock
    fcntl_setlk
    do_fcntl
    sys_fcntl

    So I guess that NFS locking is really bad if the region is mmapped!
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