diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | fs/buffer.c | 2 | ||||
| -rw-r--r-- | include/linux/gfp.h | 39 | ||||
| -rw-r--r-- | include/linux/types.h | 9 | ||||
| -rw-r--r-- | mm/mempolicy.c | 6 | ||||
| -rw-r--r-- | mm/page_alloc.c | 4 |
6 files changed, 34 insertions, 28 deletions
@@ -334,7 +334,7 @@ KALLSYMS = scripts/kallsyms PERL = perl CHECK = sparse -CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ $(CF) +CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) MODFLAGS = -DMODULE CFLAGS_MODULE = $(MODFLAGS) AFLAGS_MODULE = $(MODFLAGS) diff --git a/fs/buffer.c b/fs/buffer.c index 1216c0d..9657696 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -502,7 +502,7 @@ static void free_more_memory(void) yield(); for_each_pgdat(pgdat) { - zones = pgdat->node_zonelists[GFP_NOFS&GFP_ZONEMASK].zones; + zones = pgdat->node_zonelists[gfp_zone(GFP_NOFS)].zones; if (*zones) try_to_free_pages(zones, GFP_NOFS); } diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 3010e17..c377943 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -12,8 +12,8 @@ struct vm_area_struct; * GFP bitmasks.. */ /* Zone modifiers in GFP_ZONEMASK (see linux/mmzone.h - low two bits) */ -#define __GFP_DMA 0x01u -#define __GFP_HIGHMEM 0x02u +#define __GFP_DMA ((__force gfp_t)0x01u) +#define __GFP_HIGHMEM ((__force gfp_t)0x02u) /* * Action modifiers - doesn't change the zoning @@ -26,24 +26,24 @@ struct vm_area_struct; * * __GFP_NORETRY: The VM implementation must not retry indefinitely. */ -#define __GFP_WAIT 0x10u /* Can wait and reschedule? */ -#define __GFP_HIGH 0x20u /* Should access emergency pools? */ -#define __GFP_IO 0x40u /* Can start physical IO? */ -#define __GFP_FS 0x80u /* Can call down to low-level FS? */ -#define __GFP_COLD 0x100u /* Cache-cold page required */ -#define __GFP_NOWARN 0x200u /* Suppress page allocation failure warning */ -#define __GFP_REPEAT 0x400u /* Retry the allocation. Might fail */ -#define __GFP_NOFAIL 0x800u /* Retry for ever. Cannot fail */ -#define __GFP_NORETRY 0x1000u /* Do not retry. Might fail */ -#define __GFP_NO_GROW 0x2000u /* Slab internal usage */ -#define __GFP_COMP 0x4000u /* Add compound page metadata */ -#define __GFP_ZERO 0x8000u /* Return zeroed page on success */ -#define __GFP_NOMEMALLOC 0x10000u /* Don't use emergency reserves */ -#define __GFP_NORECLAIM 0x20000u /* No realy zone reclaim during allocation */ -#define __GFP_HARDWALL 0x40000u /* Enforce hardwall cpuset memory allocs */ +#define __GFP_WAIT ((__force gfp_t)0x10u) /* Can wait and reschedule? */ +#define __GFP_HIGH ((__force gfp_t)0x20u) /* Should access emergency pools? */ +#define __GFP_IO ((__force gfp_t)0x40u) /* Can start physical IO? */ +#define __GFP_FS ((__force gfp_t)0x80u) /* Can call down to low-level FS? */ +#define __GFP_COLD ((__force gfp_t)0x100u) /* Cache-cold page required */ +#define __GFP_NOWARN ((__force gfp_t)0x200u) /* Suppress page allocation failure warning */ +#define __GFP_REPEAT ((__force gfp_t)0x400u) /* Retry the allocation. Might fail */ +#define __GFP_NOFAIL ((__force gfp_t)0x800u) /* Retry for ever. Cannot fail */ +#define __GFP_NORETRY ((__force gfp_t)0x1000u)/* Do not retry. Might fail */ +#define __GFP_NO_GROW ((__force gfp_t)0x2000u)/* Slab internal usage */ +#define __GFP_COMP ((__force gfp_t)0x4000u)/* Add compound page metadata */ +#define __GFP_ZERO ((__force gfp_t)0x8000u)/* Return zeroed page on success */ +#define __GFP_NOMEMALLOC ((__force gfp_t)0x10000u) /* Don't use emergency reserves */ +#define __GFP_NORECLAIM ((__force gfp_t)0x20000u) /* No realy zone reclaim during allocation */ +#define __GFP_HARDWALL ((__force gfp_t)0x40000u) /* Enforce hardwall cpuset memory allocs */ #define __GFP_BITS_SHIFT 20 /* Room for 20 __GFP_FOO bits */ -#define __GFP_BITS_MASK ((1 << __GFP_BITS_SHIFT) - 1) +#define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) /* if you forget to add the bitmask here kernel will crash, period */ #define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \ @@ -64,6 +64,7 @@ struct vm_area_struct; #define GFP_DMA __GFP_DMA +#define gfp_zone(mask) ((__force int)((mask) & (__force gfp_t)GFP_ZONEMASK)) /* * There is only one page-allocator function, and two main namespaces to @@ -94,7 +95,7 @@ static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask, return NULL; return __alloc_pages(gfp_mask, order, - NODE_DATA(nid)->node_zonelists + (gfp_mask & GFP_ZONEMASK)); + NODE_DATA(nid)->node_zonelists + gfp_zone(gfp_mask)); } #ifdef CONFIG_NUMA diff --git a/include/linux/types.h b/include/linux/types.h index 0aee34f..21b9ce8 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -151,7 +151,12 @@ typedef unsigned long sector_t; */ #ifdef __CHECKER__ -#define __bitwise __attribute__((bitwise)) +#define __bitwise__ __attribute__((bitwise)) +#else +#define __bitwise__ +#endif +#ifdef __CHECK_ENDIAN__ +#define __bitwise __bitwise__ #else #define __bitwise #endif @@ -166,7 +171,7 @@ typedef __u64 __bitwise __be64; #endif #ifdef __KERNEL__ -typedef unsigned __nocast gfp_t; +typedef unsigned __bitwise__ gfp_t; #endif struct ustat { diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 37af443..1d5c64d 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -700,7 +700,7 @@ static struct zonelist *zonelist_policy(gfp_t gfp, struct mempolicy *policy) case MPOL_BIND: /* Lower zones don't get a policy applied */ /* Careful: current->mems_allowed might have moved */ - if ((gfp & GFP_ZONEMASK) >= policy_zone) + if (gfp_zone(gfp) >= policy_zone) if (cpuset_zonelist_valid_mems_allowed(policy->v.zonelist)) return policy->v.zonelist; /*FALL THROUGH*/ @@ -712,7 +712,7 @@ static struct zonelist *zonelist_policy(gfp_t gfp, struct mempolicy *policy) nd = 0; BUG(); } - return NODE_DATA(nd)->node_zonelists + (gfp & GFP_ZONEMASK); + return NODE_DATA(nd)->node_zonelists + gfp_zone(gfp); } /* Do dynamic interleaving for a process */ @@ -757,7 +757,7 @@ static struct page *alloc_page_interleave(gfp_t gfp, unsigned order, unsigned ni struct page *page; BUG_ON(!node_online(nid)); - zl = NODE_DATA(nid)->node_zonelists + (gfp & GFP_ZONEMASK); + zl = NODE_DATA(nid)->node_zonelists + gfp_zone(gfp); page = __alloc_pages(gfp, order, zl); if (page && page_zone(page) == zl->zones[0]) { zone_pcp(zl->zones[0],get_cpu())->interleave_hit++; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e1d3d77..aa43ae3 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1089,7 +1089,7 @@ static unsigned int nr_free_zone_pages(int offset) */ unsigned int nr_free_buffer_pages(void) { - return nr_free_zone_pages(GFP_USER & GFP_ZONEMASK); + return nr_free_zone_pages(gfp_zone(GFP_USER)); } /* @@ -1097,7 +1097,7 @@ unsigned int nr_free_buffer_pages(void) */ unsigned int nr_free_pagecache_pages(void) { - return nr_free_zone_pages(GFP_HIGHUSER & GFP_ZONEMASK); + return nr_free_zone_pages(gfp_zone(GFP_HIGHUSER)); } #ifdef CONFIG_HIGHMEM |