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    Subject[PATCH 3/3] mm: Remove unused page flags
    Date
    From: Rafael J. Wysocki <rjw@sisk.pl>

    Remove the two page flags that were previously used by swsusp and are no longer
    needed.

    Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
    Acked-by: Pavel Machek <pavel@ucw.cz>
    ---
    include/linux/page-flags.h | 12 ------------
    1 file changed, 12 deletions(-)

    Index: linux-2.6.21-rc3/include/linux/page-flags.h
    ===================================================================
    --- linux-2.6.21-rc3.orig/include/linux/page-flags.h
    +++ linux-2.6.21-rc3/include/linux/page-flags.h
    @@ -82,13 +82,11 @@
    #define PG_private 11 /* If pagecache, has fs-private data */

    #define PG_writeback 12 /* Page is under writeback */
    -#define PG_nosave 13 /* Used for system suspend/resume */
    #define PG_compound 14 /* Part of a compound page */
    #define PG_swapcache 15 /* Swap page: swp_entry_t in private */

    #define PG_mappedtodisk 16 /* Has blocks allocated on-disk */
    #define PG_reclaim 17 /* To be reclaimed asap */
    -#define PG_nosave_free 18 /* Used for system suspend/resume */
    #define PG_buddy 19 /* Page is free, on buddy lists */

    /* PG_owner_priv_1 users should have descriptive aliases */
    @@ -214,16 +212,6 @@ static inline void SetPageUptodate(struc
    ret; \
    })

    -#define PageNosave(page) test_bit(PG_nosave, &(page)->flags)
    -#define SetPageNosave(page) set_bit(PG_nosave, &(page)->flags)
    -#define TestSetPageNosave(page) test_and_set_bit(PG_nosave, &(page)->flags)
    -#define ClearPageNosave(page) clear_bit(PG_nosave, &(page)->flags)
    -#define TestClearPageNosave(page) test_and_clear_bit(PG_nosave, &(page)->flags)
    -
    -#define PageNosaveFree(page) test_bit(PG_nosave_free, &(page)->flags)
    -#define SetPageNosaveFree(page) set_bit(PG_nosave_free, &(page)->flags)
    -#define ClearPageNosaveFree(page) clear_bit(PG_nosave_free, &(page)->flags)
    -
    #define PageBuddy(page) test_bit(PG_buddy, &(page)->flags)
    #define __SetPageBuddy(page) __set_bit(PG_buddy, &(page)->flags)
    #define __ClearPageBuddy(page) __clear_bit(PG_buddy, &(page)->flags)
    -
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