Commit 260b2367 authored by Al Viro's avatar Al Viro Committed by Linus Torvalds
Browse files

[PATCH] gfp_t: the rest 



zone handling, mapping->flags handling

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent c4cdd038

include/linux/mmzone.h

+1 −1
Original line number Diff line number Diff line
@@ -302,7 +302,7 @@ void get_zone_counts(unsigned long *active, unsigned long *inactive, 
void build_all_zonelists(void);

void wakeup_kswapd(struct zone *zone, int order);

int zone_watermark_ok(struct zone *z, int order, unsigned long mark,

		int alloc_type, int can_try_harder, int gfp_high);

		int alloc_type, int can_try_harder, gfp_t gfp_high);



#ifdef CONFIG_HAVE_MEMORY_PRESENT

void memory_present(int nid, unsigned long start, unsigned long end);

include/linux/pagemap.h

+4 −3
Original line number Diff line number Diff line
@@ -21,16 +21,17 @@ 


static inline gfp_t mapping_gfp_mask(struct address_space * mapping)

{

	return mapping->flags & __GFP_BITS_MASK;

	return (__force gfp_t)mapping->flags & __GFP_BITS_MASK;

}



/*

 * This is non-atomic.  Only to be used before the mapping is activated.

 * Probably needs a barrier...

 */

static inline void mapping_set_gfp_mask(struct address_space *m, int mask)

static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask)

{

	m->flags = (m->flags & ~__GFP_BITS_MASK) | mask;

	m->flags = (m->flags & ~(__force unsigned long)__GFP_BITS_MASK) |

				(__force unsigned long)mask;

}



/*

mm/highmem.c

+9 −5
Original line number Diff line number Diff line
@@ -30,11 +30,9 @@ 


static mempool_t *page_pool, *isa_page_pool;



static void *page_pool_alloc(gfp_t gfp_mask, void *data)

static void *page_pool_alloc_isa(gfp_t gfp_mask, void *data)

{

	unsigned int gfp = gfp_mask | (unsigned int) (long) data;



	return alloc_page(gfp);

	return alloc_page(gfp_mask | GFP_DMA);

}



static void page_pool_free(void *page, void *data)
@@ -51,6 +49,12 @@ static void page_pool_free(void *page, void *data) 
 *  n means that there are (n-1) current users of it.

 */

#ifdef CONFIG_HIGHMEM



static void *page_pool_alloc(gfp_t gfp_mask, void *data)

{

	return alloc_page(gfp_mask);

}



static int pkmap_count[LAST_PKMAP];

static unsigned int last_pkmap_nr;

static  __cacheline_aligned_in_smp DEFINE_SPINLOCK(kmap_lock);
@@ -267,7 +271,7 @@ int init_emergency_isa_pool(void) 
	if (isa_page_pool)

		return 0;



	isa_page_pool = mempool_create(ISA_POOL_SIZE, page_pool_alloc, page_pool_free, (void *) __GFP_DMA);

	isa_page_pool = mempool_create(ISA_POOL_SIZE, page_pool_alloc_isa, page_pool_free, NULL);

	if (!isa_page_pool)

		BUG();

mm/page_alloc.c

+15 −14
Original line number Diff line number Diff line
@@ -734,7 +734,7 @@ buffered_rmqueue(struct zone *zone, int order, gfp_t gfp_flags) 
 * of the allocation.

 */

int zone_watermark_ok(struct zone *z, int order, unsigned long mark,

		      int classzone_idx, int can_try_harder, int gfp_high)

		      int classzone_idx, int can_try_harder, gfp_t gfp_high)

{

	/* free_pages my go negative - that's OK */

	long min = mark, free_pages = z->free_pages - (1 << order) + 1;
@@ -777,7 +777,7 @@ struct page * fastcall 
__alloc_pages(gfp_t gfp_mask, unsigned int order,

		struct zonelist *zonelist)

{

	const int wait = gfp_mask & __GFP_WAIT;

	const gfp_t wait = gfp_mask & __GFP_WAIT;

	struct zone **zones, *z;

	struct page *page;

	struct reclaim_state reclaim_state;
@@ -996,7 +996,7 @@ fastcall unsigned long get_zeroed_page(gfp_t gfp_mask) 
	 * get_zeroed_page() returns a 32-bit address, which cannot represent

	 * a highmem page

	 */

	BUG_ON(gfp_mask & __GFP_HIGHMEM);

	BUG_ON((gfp_mask & __GFP_HIGHMEM) != 0);



	page = alloc_pages(gfp_mask | __GFP_ZERO, 0);

	if (page)
@@ -1428,6 +1428,16 @@ static int __init build_zonelists_node(pg_data_t *pgdat, struct zonelist *zoneli 
	return j;

}



static inline int highest_zone(int zone_bits)

{

	int res = ZONE_NORMAL;

	if (zone_bits & (__force int)__GFP_HIGHMEM)

		res = ZONE_HIGHMEM;

	if (zone_bits & (__force int)__GFP_DMA)

		res = ZONE_DMA;

	return res;

}



#ifdef CONFIG_NUMA

#define MAX_NODE_LOAD (num_online_nodes())

static int __initdata node_load[MAX_NUMNODES];
@@ -1524,11 +1534,7 @@ static void __init build_zonelists(pg_data_t *pgdat) 
			zonelist = pgdat->node_zonelists + i;

			for (j = 0; zonelist->zones[j] != NULL; j++);



			k = ZONE_NORMAL;

			if (i & __GFP_HIGHMEM)

				k = ZONE_HIGHMEM;

			if (i & __GFP_DMA)

				k = ZONE_DMA;

			k = highest_zone(i);



	 		j = build_zonelists_node(NODE_DATA(node), zonelist, j, k);

			zonelist->zones[j] = NULL;
@@ -1549,12 +1555,7 @@ static void __init build_zonelists(pg_data_t *pgdat) 
		zonelist = pgdat->node_zonelists + i;



		j = 0;

		k = ZONE_NORMAL;

		if (i & __GFP_HIGHMEM)

			k = ZONE_HIGHMEM;

		if (i & __GFP_DMA)

			k = ZONE_DMA;



		k = highest_zone(i);

 		j = build_zonelists_node(pgdat, zonelist, j, k);

 		/*

 		 * Now we build the zonelist so that it contains the zones