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    SubjectRe: [PATCH] mm: cleanup swap unused warning
    On 5/10/06, Con Kolivas <kernel@kolivas.org> wrote:
    > +/*
    > + * A swap entry has to fit into a "unsigned long", as
    > + * the entry is hidden in the "index" field of the
    > + * swapper address space.
    > + */
    > +#ifdef CONFIG_SWAP
    > typedef struct {
    > unsigned long val;
    > } swp_entry_t;
    > +#else
    > +typedef struct {
    > + unsigned long val;
    > +} swp_entry_t __attribute__((__unused__));
    > +#endif

    Or we could make swap_free() an empty static inline function for the
    non-CONFIG_SWAP case.

    Pekka
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