Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [RFC] [PATCH 3/5] Dynamically allocated pageflags - PageSwapCache conversion. | Date | Mon, 23 Jul 2007 23:15:58 +1000 |
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Switch PageSwapCache flag to use dynamically allocated pageflags.
Signed-off-by: Nigel Cunningham <nigel@nigel.suspend2.net>
include/linux/page-flags.h | 7 ++++--- mm/dyn_pageflags.c | 3 +++ 2 files changed, 7 insertions(+), 3 deletions(-) diff -ruNp 921-page-swap-cache-pageflag.patch-old/include/linux/page-flags.h 921-page-swap-cache-pageflag.patch-new/include/linux/page-flags.h --- 921-page-swap-cache-pageflag.patch-old/include/linux/page-flags.h 2007-07-23 22:13:16.000000000 +1000 +++ 921-page-swap-cache-pageflag.patch-new/include/linux/page-flags.h 2007-07-23 22:13:18.000000000 +1000 @@ -260,9 +260,10 @@ static inline void __ClearPageTail(struc #define __ClearPageHead(page) __ClearPageCompound(page) #ifdef CONFIG_SWAP -#define PageSwapCache(page) test_bit(PG_swapcache, &(page)->flags) -#define SetPageSwapCache(page) set_bit(PG_swapcache, &(page)->flags) -#define ClearPageSwapCache(page) clear_bit(PG_swapcache, &(page)->flags) +extern struct dyn_pageflags dyn_SwapCache_map; +#define PageSwapCache(page) test_dynpageflag(&dyn_SwapCache_map, page) +#define SetPageSwapCache(page) set_dynpageflag(&dyn_SwapCache_map, page) +#define ClearPageSwapCache(page) clear_dynpageflag(&dyn_SwapCache_map, page) #else #define PageSwapCache(page) 0 #endif diff -ruNp 921-page-swap-cache-pageflag.patch-old/mm/dyn_pageflags.c 921-page-swap-cache-pageflag.patch-new/mm/dyn_pageflags.c --- 921-page-swap-cache-pageflag.patch-old/mm/dyn_pageflags.c 2007-07-23 22:13:16.000000000 +1000 +++ 921-page-swap-cache-pageflag.patch-new/mm/dyn_pageflags.c 2007-07-23 22:13:18.000000000 +1000 @@ -114,6 +114,9 @@ static int dyn_pageflags_debug = 0; for (zone_nr = 0; zone_nr < MAX_NR_ZONES; zone_nr++) DECLARE_DYN_PAGEFLAGS(dyn_MappedToDisk_map); +#ifdef CONFIG_SWAP +DECLARE_DYN_PAGEFLAGS(dyn_SwapCache_map); +#endif /** * dump_pagemap: Display the contents of a bitmap for debugging purposes. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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