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authorAndi Kleen <ak@suse.de>2008-07-24 00:27:41 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 13:47:17 -0400
commita5516438959d90b071ff0a484ce4f3f523dc3152 (patch)
treee356ba9364c76b93c176b4d4a262b7aca3ee8f91 /arch/powerpc/mm/hugetlbpage.c
parentb7ba30c679ed1eb7ed3ed8f281f6493282042bd4 (diff)
hugetlb: modular state for hugetlb page size
The goal of this patchset is to support multiple hugetlb page sizes. This is achieved by introducing a new struct hstate structure, which encapsulates the important hugetlb state and constants (eg. huge page size, number of huge pages currently allocated, etc). The hstate structure is then passed around the code which requires these fields, they will do the right thing regardless of the exact hstate they are operating on. This patch adds the hstate structure, with a single global instance of it (default_hstate), and does the basic work of converting hugetlb to use the hstate. Future patches will add more hstate structures to allow for different hugetlbfs mounts to have different page sizes. [akpm@linux-foundation.org: coding-style fixes] Acked-by: Adam Litke <agl@us.ibm.com> Acked-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/mm/hugetlbpage.c')
-rw-r--r--arch/powerpc/mm/hugetlbpage.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 1a96cc891cf5..c94dc71af989 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -128,7 +128,8 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
128 return NULL; 128 return NULL;
129} 129}
130 130
131pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) 131pte_t *huge_pte_alloc(struct mm_struct *mm,
132 unsigned long addr, unsigned long sz)
132{ 133{
133 pgd_t *pg; 134 pgd_t *pg;
134 pud_t *pu; 135 pud_t *pu;