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    Subject[PATCH 10/11] vfs: Export wakeup_pdflush
    Date
    When we are running out of free space on a filesystem, we want to flush dirty
    pages in the filesystem so that blocks reserved via delayed allocation get
    written and unnecessary block reservation is released. Export wakeup_pdflush()
    so that filesystem can start such writeback.

    Signed-off-by: Jan Kara <jack@suse.cz>
    ---
    mm/page-writeback.c | 1 +
    1 files changed, 1 insertions(+), 0 deletions(-)

    diff --git a/mm/page-writeback.c b/mm/page-writeback.c
    index bb553c3..43af1cf 100644
    --- a/mm/page-writeback.c
    +++ b/mm/page-writeback.c
    @@ -730,6 +730,7 @@ int wakeup_pdflush(long nr_pages)
    global_page_state(NR_UNSTABLE_NFS);
    return pdflush_operation(background_writeout, nr_pages);
    }
    +EXPORT_SYMBOL(wakeup_pdflush);

    static void wb_timer_fn(unsigned long unused);
    static void laptop_timer_fn(unsigned long unused);
    --
    1.6.0.2


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