diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-26 15:30:40 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-26 15:30:40 +0200 |
commit | 1503af661947b7a4a09355cc2ae6aa0d43f16776 (patch) | |
tree | 5bfcfadf2dd2d98c2ad251c96d7ee43a6903819a /include/linux/mempolicy.h | |
parent | a31863168660c6b6f6c7ffe05bb6a38e97803326 (diff) | |
parent | 024e8ac04453b3525448c31ef39848cf675ba6db (diff) |
Merge branch 'linus' into x86/header-guards
Conflicts:
include/asm-x86/gpio.h
include/asm-x86/ide.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/mempolicy.h')
-rw-r--r-- | include/linux/mempolicy.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index 3a39570b81b8..085c903fe0f1 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -59,6 +59,7 @@ enum { #include <linux/rbtree.h> #include <linux/spinlock.h> #include <linux/nodemask.h> +#include <linux/pagemap.h> struct mm_struct; @@ -220,6 +221,24 @@ extern int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context); extern int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol, int no_context); #endif + +/* Check if a vma is migratable */ +static inline int vma_migratable(struct vm_area_struct *vma) +{ + if (vma->vm_flags & (VM_IO|VM_HUGETLB|VM_PFNMAP|VM_RESERVED)) + return 0; + /* + * Migration allocates pages in the highest zone. If we cannot + * do so then migration (at least from node to node) is not + * possible. + */ + if (vma->vm_file && + gfp_zone(mapping_gfp_mask(vma->vm_file->f_mapping)) + < policy_zone) + return 0; + return 1; +} + #else struct mempolicy {}; |