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-rw-r--r--arch/ia64/mm/hugetlbpage.c7
-rw-r--r--arch/powerpc/mm/hugetlbpage.c3
-rw-r--r--arch/s390/mm/hugetlbpage.c3
-rw-r--r--arch/sh/mm/hugetlbpage.c3
-rw-r--r--arch/sparc64/mm/hugetlbpage.c5
-rw-r--r--arch/x86/mm/hugetlbpage.c5
-rw-r--r--fs/hugetlbfs/inode.c52
-rw-r--r--include/asm-ia64/hugetlb.h3
-rw-r--r--include/asm-powerpc/hugetlb.h3
-rw-r--r--include/asm-s390/hugetlb.h3
-rw-r--r--include/asm-sh/hugetlb.h3
-rw-r--r--include/asm-sparc/hugetlb.h3
-rw-r--r--include/asm-x86/hugetlb.h8
-rw-r--r--include/linux/hugetlb.h88
-rw-r--r--ipc/shm.c3
-rw-r--r--mm/hugetlb.c368
-rw-r--r--mm/memory.c2
-rw-r--r--mm/mempolicy.c9
-rw-r--r--mm/mmap.c3
19 files changed, 356 insertions, 218 deletions
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index cd49e28..6170f09 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -24,7 +24,7 @@
unsigned int hpage_shift=HPAGE_SHIFT_DEFAULT;
pte_t *
-huge_pte_alloc (struct mm_struct *mm, unsigned long addr)
+huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz)
{
unsigned long taddr = htlbpage_to_page(addr);
pgd_t *pgd;
@@ -75,7 +75,8 @@ int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
* Don't actually need to do any preparation, but need to make sure
* the address is in the right region.
*/
-int prepare_hugepage_range(unsigned long addr, unsigned long len)
+int prepare_hugepage_range(struct file *file,
+ unsigned long addr, unsigned long len)
{
if (len & ~HPAGE_MASK)
return -EINVAL;
@@ -149,7 +150,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u
/* Handle MAP_FIXED */
if (flags & MAP_FIXED) {
- if (prepare_hugepage_range(addr, len))
+ if (prepare_hugepage_range(file, addr, len))
return -EINVAL;
return addr;
}
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 1a96cc8..c94dc71 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)
return NULL;
}
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+ unsigned long addr, unsigned long sz)
{
pgd_t *pg;
pud_t *pu;
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index f4b6124..9162dc8 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -72,7 +72,8 @@ void arch_release_hugepage(struct page *page)
page[1].index = 0;
}
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+ unsigned long addr, unsigned long sz)
{
pgd_t *pgdp;
pud_t *pudp;
diff --git a/arch/sh/mm/hugetlbpage.c b/arch/sh/mm/hugetlbpage.c
index ae8c321..2f9dbe0 100644
--- a/arch/sh/mm/hugetlbpage.c
+++ b/arch/sh/mm/hugetlbpage.c
@@ -22,7 +22,8 @@
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+ unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
pud_t *pud;
diff --git a/arch/sparc64/mm/hugetlbpage.c b/arch/sparc64/mm/hugetlbpage.c
index ebefd2a..1307b23 100644
--- a/arch/sparc64/mm/hugetlbpage.c
+++ b/arch/sparc64/mm/hugetlbpage.c
@@ -175,7 +175,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
return -ENOMEM;
if (flags & MAP_FIXED) {
- if (prepare_hugepage_range(addr, len))
+ if (prepare_hugepage_range(file, addr, len))
return -EINVAL;
return addr;
}
@@ -195,7 +195,8 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
pgoff, flags);
}
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+ unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
pud_t *pud;
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 0b3d567..52476fd 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -124,7 +124,8 @@ int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
return 1;
}
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+ unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
pud_t *pud;
@@ -368,7 +369,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
return -ENOMEM;
if (flags & MAP_FIXED) {
- if (prepare_hugepage_range(addr, len))
+ if (prepare_hugepage_range(file, addr, len))
return -EINVAL;
return addr;
}
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 428eff5..516c581 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -80,6 +80,7 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
struct inode *inode = file->f_path.dentry->d_inode;
loff_t len, vma_len;
int ret;
+ struct hstate *h = hstate_file(file);
/*
* vma address alignment (but not the pgoff alignment) has
@@ -92,7 +93,7 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
vma->vm_flags |= VM_HUGETLB | VM_RESERVED;
vma->vm_ops = &hugetlb_vm_ops;
- if (vma->vm_pgoff & ~(HPAGE_MASK >> PAGE_SHIFT))
+ if (vma->vm_pgoff & ~(huge_page_mask(h) >> PAGE_SHIFT))
return -EINVAL;
vma_len = (loff_t)(vma->vm_end - vma->vm_start);
@@ -104,8 +105,8 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
len = vma_len + ((loff_t)vma->vm_pgoff << PAGE_SHIFT);
if (hugetlb_reserve_pages(inode,
- vma->vm_pgoff >> (HPAGE_SHIFT-PAGE_SHIFT),
- len >> HPAGE_SHIFT, vma))
+ vma->vm_pgoff >> huge_page_order(h),
+ len >> huge_page_shift(h), vma))
goto out;
ret = 0;
@@ -130,20 +131,21 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
unsigned long start_addr;
+ struct hstate *h = hstate_file(file);
- if (len & ~HPAGE_MASK)
+ if (len & ~huge_page_mask(h))
return -EINVAL;
if (len > TASK_SIZE)
return -ENOMEM;
if (flags & MAP_FIXED) {
- if (prepare_hugepage_range(addr, len))
+ if (prepare_hugepage_range(file, addr, len))
return -EINVAL;
return addr;
}
if (addr) {
- addr = ALIGN(addr, HPAGE_SIZE);
+ addr = ALIGN(addr, huge_page_size(h));
vma = find_vma(mm, addr);
if (TASK_SIZE - len >= addr &&
(!vma || addr + len <= vma->vm_start))
@@ -156,7 +158,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
start_addr = TASK_UNMAPPED_BASE;
full_search:
- addr = ALIGN(start_addr, HPAGE_SIZE);
+ addr = ALIGN(start_addr, huge_page_size(h));
for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
/* At this point: (!vma || addr < vma->vm_end). */
@@ -174,7 +176,7 @@ full_search:
if (!vma || addr + len <= vma->vm_start)
return addr;
- addr = ALIGN(vma->vm_end, HPAGE_SIZE);
+ addr = ALIGN(vma->vm_end, huge_page_size(h));
}
}
#endif
@@ -225,10 +227,11 @@ hugetlbfs_read_actor(struct page *page, unsigned long offset,
static ssize_t hugetlbfs_read(struct file *filp, char __user *buf,
size_t len, loff_t *ppos)
{
+ struct hstate *h = hstate_file(filp);
struct address_space *mapping = filp->f_mapping;
struct inode *inode = mapping->host;
- unsigned long index = *ppos >> HPAGE_SHIFT;
- unsigned long offset = *ppos & ~HPAGE_MASK;
+ unsigned long index = *ppos >> huge_page_shift(h);
+ unsigned long offset = *ppos & ~huge_page_mask(h);
unsigned long end_index;
loff_t isize;
ssize_t retval = 0;
@@ -243,17 +246,17 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf,
if (!isize)
goto out;
- end_index = (isize - 1) >> HPAGE_SHIFT;
+ end_index = (isize - 1) >> huge_page_shift(h);
for (;;) {
struct page *page;
- int nr, ret;
+ unsigned long nr, ret;
/* nr is the maximum number of bytes to copy from this page */
- nr = HPAGE_SIZE;
+ nr = huge_page_size(h);
if (index >= end_index) {
if (index > end_index)
goto out;
- nr = ((isize - 1) & ~HPAGE_MASK) + 1;
+ nr = ((isize - 1) & ~huge_page_mask(h)) + 1;
if (nr <= offset) {
goto out;
}
@@ -287,8 +290,8 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf,
offset += ret;
retval += ret;
len -= ret;
- index += offset >> HPAGE_SHIFT;
- offset &= ~HPAGE_MASK;
+ index += offset >> huge_page_shift(h);
+ offset &= ~huge_page_mask(h);
if (page)
page_cache_release(page);
@@ -298,7 +301,7 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf,
break;
}
out:
- *ppos = ((loff_t)index << HPAGE_SHIFT) + offset;
+ *ppos = ((loff_t)index << huge_page_shift(h)) + offset;
mutex_unlock(&inode->i_mutex);
return retval;
}
@@ -339,8 +342,9 @@ static void truncate_huge_page(struct page *page)
static void truncate_hugepages(struct inode *inode, loff_t lstart)
{
+ struct hstate *h = hstate_inode(inode);
struct address_space *mapping = &inode->i_data;
- const pgoff_t start = lstart >> HPAGE_SHIFT;
+ const pgoff_t start = lstart >> huge_page_shift(h);
struct pagevec pvec;
pgoff_t next;
int i, freed = 0;
@@ -449,8 +453,9 @@ static int hugetlb_vmtruncate(struct inode *inode, loff_t offset)
{
pgoff_t pgoff;
struct address_space *mapping = inode->i_mapping;
+ struct hstate *h = hstate_inode(inode);
- BUG_ON(offset & ~HPAGE_MASK);
+ BUG_ON(offset & ~huge_page_mask(h));
pgoff = offset >> PAGE_SHIFT;
i_size_write(inode, offset);
@@ -465,6 +470,7 @@ static int hugetlb_vmtruncate(struct inode *inode, loff_t offset)
static int hugetlbfs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
+ struct hstate *h = hstate_inode(inode);
int error;
unsigned int ia_valid = attr->ia_valid;
@@ -476,7 +482,7 @@ static int hugetlbfs_setattr(struct dentry *dentry, struct iattr *attr)
if (ia_valid & ATTR_SIZE) {
error = -EINVAL;
- if (!(attr->ia_size & ~HPAGE_MASK))
+ if (!(attr->ia_size & ~huge_page_mask(h)))
error = hugetlb_vmtruncate(inode, attr->ia_size);
if (error)
goto out;
@@ -610,9 +616,10 @@ static int hugetlbfs_set_page_dirty(struct page *page)
static int hugetlbfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);
+ struct hstate *h = hstate_inode(dentry->d_inode);
buf->f_type = HUGETLBFS_MAGIC;
- buf->f_bsize = HPAGE_SIZE;
+ buf->f_bsize = huge_page_size(h);
if (sbinfo) {
spin_lock(&sbinfo->stat_lock);
/* If no limits set, just report 0 for max/free/used
@@ -942,7 +949,8 @@ struct file *hugetlb_file_setup(const char *name, size_t size)
goto out_dentry;
error = -ENOMEM;
- if (hugetlb_reserve_pages(inode, 0, size >> HPAGE_SHIFT, NULL))
+ if (hugetlb_reserve_pages(inode, 0,
+ size >> huge_page_shift(hstate_inode(inode)), NULL))
goto out_inode;
d_instantiate(dentry, inode);
diff --git a/include/asm-ia64/hugetlb.h b/include/asm-ia64/hugetlb.h
index e9d1e5e..da55c63 100644
--- a/include/asm-ia64/hugetlb.h
+++ b/include/asm-ia64/hugetlb.h
@@ -8,7 +8,8 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
unsigned long end, unsigned long floor,
unsigned long ceiling);
-int prepare_hugepage_range(unsigned long addr, unsigned long len);
+int prepare_hugepage_range(struct file *file,
+ unsigned long addr, unsigned long len);
static inline int is_hugepage_only_range(struct mm_struct *mm,
unsigned long addr,
diff --git a/include/asm-powerpc/hugetlb.h b/include/asm-powerpc/hugetlb.h
index 0a37aa5..ca37c4a 100644
--- a/include/asm-powerpc/hugetlb.h
+++ b/include/asm-powerpc/hugetlb.h
@@ -21,7 +21,8 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
*/
-static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
+static inline int prepare_hugepage_range(struct file *file,
+ unsigned long addr, unsigned long len)
{
if (len & ~HPAGE_MASK)
return -EINVAL;
diff --git a/include/asm-s390/hugetlb.h b/include/asm-s390/hugetlb.h
index 600a776..670a1d1 100644
--- a/include/asm-s390/hugetlb.h
+++ b/include/asm-s390/hugetlb.h
@@ -22,7 +22,8 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
*/
-static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
+static inline int prepare_hugepage_range(struct file *file,
+ unsigned long addr, unsigned long len)
{
if (len & ~HPAGE_MASK)
return -EINVAL;
diff --git a/include/asm-sh/hugetlb.h b/include/asm-sh/hugetlb.h
index fb30018..967068f 100644
--- a/include/asm-sh/hugetlb.h
+++ b/include/asm-sh/hugetlb.h
@@ -14,7 +14,8 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
*/
-static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
+static inline int prepare_hugepage_range(struct file *file,
+ unsigned long addr, unsigned long len)
{
if (len & ~HPAGE_MASK)
return -EINVAL;
diff --git a/include/asm-sparc/hugetlb.h b/include/asm-sparc/hugetlb.h
index aeb9237..1770610 100644
--- a/include/asm-sparc/hugetlb.h
+++ b/include/asm-sparc/hugetlb.h
@@ -22,7 +22,8 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
*/
-static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
+static inline int prepare_hugepage_range(struct file *file,
+ unsigned long addr, unsigned long len)
{
if (len & ~HPAGE_MASK)
return -EINVAL;
diff --git a/include/asm-x86/hugetlb.h b/include/asm-x86/hugetlb.h
index 7eed6e0..439a9ac 100644
--- a/include/asm-x86/hugetlb.h
+++ b/include/asm-x86/hugetlb.h
@@ -14,11 +14,13 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
*/
-static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
+static inline int prepare_hugepage_range(struct file *file,
+ unsigned long addr, unsigned long len)
{
- if (len & ~HPAGE_MASK)
+ struct hstate *h = hstate_file(file);
+ if (len & ~huge_page_mask(h))
return -EINVAL;
- if (addr & ~HPAGE_MASK)
+ if (addr & ~huge_page_mask(h))
return -EINVAL;
return 0;
}
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index abbc187..ad2271e 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -8,7 +8,6 @@
#include <linux/mempolicy.h>
#include <linux/shm.h>
#include <asm/tlbflush.h>
-#include <asm/hugetlb.h>
struct ctl_table;
@@ -45,7 +44,8 @@ extern int sysctl_hugetlb_shm_group;
/* arch callbacks */
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr);
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+ unsigned long addr, unsigned long sz);
pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr);
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep);
struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address,
@@ -80,7 +80,7 @@ static inline unsigned long hugetlb_total_pages(void)
#define hugetlb_report_meminfo(buf) 0
#define hugetlb_report_node_meminfo(n, buf) 0
#define follow_huge_pmd(mm, addr, pmd, write) NULL
-#define prepare_hugepage_range(addr,len) (-EINVAL)
+#define prepare_hugepage_range(file, addr, len) (-EINVAL)
#define pmd_huge(x) 0
#define is_hugepage_only_range(mm, addr, len) 0
#define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; })
@@ -134,8 +134,6 @@ struct file *hugetlb_file_setup(const char *name, size_t);
int hugetlb_get_quota(struct address_space *mapping, long delta);
void hugetlb_put_quota(struct address_space *mapping, long delta);
-#define BLOCKS_PER_HUGEPAGE (HPAGE_SIZE / 512)
-
static inline int is_file_hugepages(struct file *file)
{
if (file->f_op == &hugetlbfs_file_operations)
@@ -164,4 +162,84 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
unsigned long flags);
#endif /* HAVE_ARCH_HUGETLB_UNMAPPED_AREA */
+#ifdef CONFIG_HUGETLB_PAGE
+
+/* Defines one hugetlb page size */
+struct hstate {
+ int hugetlb_next_nid;
+ unsigned int order;
+ unsigned long mask;
+ unsigned long max_huge_pages;
+ unsigned long nr_huge_pages;
+ unsigned long free_huge_pages;
+ unsigned long resv_huge_pages;
+ unsigned long surplus_huge_pages;
+ unsigned long nr_overcommit_huge_pages;
+ struct list_head hugepage_freelists[MAX_NUMNODES];
+ unsigned int nr_huge_pages_node[MAX_NUMNODES];
+ unsigned int free_huge_pages_node[MAX_NUMNODES];
+ unsigned int surplus_huge_pages_node[MAX_NUMNODES];
+};
+
+extern struct hstate default_hstate;
+
+static inline struct hstate *hstate_vma(struct vm_area_struct *vma)
+{
+ return &default_hstate;
+}
+
+static inline struct hstate *hstate_file(struct file *f)
+{
+ return &default_hstate;
+}
+
+static inline struct hstate *hstate_inode(struct inode *i)
+{
+ return &default_hstate;
+}
+
+static inline unsigned long huge_page_size(struct hstate *h)
+{
+ return (unsigned long)PAGE_SIZE << h->order;
+}
+
+static inline unsigned long huge_page_mask(struct hstate *h)
+{
+ return h->mask;
+}
+
+static inline unsigned int huge_page_order(struct hstate *h)
+{
+ return h->order;
+}
+
+static inline unsigned huge_page_shift(struct hstate *h)
+{
+ return h->order + PAGE_SHIFT;
+}
+
+static inline unsigned int pages_per_huge_page(struct hstate *h)
+{
+ return 1 << h->order;
+}
+
+static inline unsigned int blocks_per_huge_page(struct hstate *h)
+{
+ return huge_page_size(h) / 512;
+}
+
+#include <asm/hugetlb.h>
+
+#else
+struct hstate {};
+#define hstate_file(f) NULL
+#define hstate_vma(v) NULL
+#define hstate_inode(i) NULL
+#define huge_page_size(h) PAGE_SIZE
+#define huge_page_mask(h) PAGE_MASK
+#define huge_page_order(h) 0
+#define huge_page_shift(h) PAGE_SHIFT
+#define pages_per_huge_page(h) 1
+#endif
+
#endif /* _LINUX_HUGETLB_H */
diff --git a/ipc/shm.c b/ipc/shm.c
index 790240c..a726aeb 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -577,7 +577,8 @@ static void shm_get_stat(struct ipc_namespace *ns, unsigned long *rss,
if (is_file_hugepages(shp->shm_file)) {
struct address_space *mapping = inode->i_mapping;
- *rss += (HPAGE_SIZE/PAGE_SIZE)*mapping->nrpages;
+ struct hstate *h = hstate_file(shp->shm_file);
+ *rss += pages_per_huge_page(h) * mapping->nrpages;
} else {
struct shmem_inode_info *info = SHMEM_I(inode);
spin_lock(&info->lock);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 32dff42..0d8153e 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -22,18 +22,12 @@
#include "internal.h"
const unsigned long hugetlb_zero = 0, hugetlb_infinity = ~0UL;
-static unsigned long nr_huge_pages, free_huge_pages, resv_huge_pages;
-static unsigned long surplus_huge_pages;
-static unsigned long nr_overcommit_huge_pages;
unsigned long max_huge_pages;
unsigned long sysctl_overcommit_huge_pages;
-static struct list_head hugepage_freelists[MAX_NUMNODES];
-static unsigned int nr_huge_pages_node[MAX_NUMNODES];
-static unsigned int free_huge_pages_node[MAX_NUMNODES];
-static unsigned int surplus_huge_pages_node[MAX_NUMNODES];
static gfp_t htlb_alloc_mask = GFP_HIGHUSER;
unsigned long hugepages_treat_as_movable;
-static int hugetlb_next_nid;
+
+struct hstate default_hstate;
/*
* Protects updates to hugepage_freelists, nr_huge_pages, and free_huge_pages
@@ -203,11 +197,11 @@ static long region_count(struct list_head *head, long f, long t)
* Convert the address within this vma to the page offset within
* the mapping, in pagecache page units; huge pages here.
*/
-static pgoff_t vma_hugecache_offset(struct vm_area_struct *vma,
- unsigned long address)
+static pgoff_t vma_hugecache_offset(struct hstate *h,
+ struct vm_area_struct *vma, unsigned long address)
{
- return ((address - vma->vm_start) >> HPAGE_SHIFT) +
- (vma->vm_pgoff >> (HPAGE_SHIFT - PAGE_SHIFT));
+ return ((address - vma->vm_start) >> huge_page_shift(h)) +
+ (vma->vm_pgoff >> huge_page_order(h));
}
/*
@@ -309,20 +303,21 @@ static int is_vma_resv_set(struct vm_area_struct *vma, unsigned long flag)
}
/* Decrement the reserved pages in the hugepage pool by one */
-static void decrement_hugepage_resv_vma(struct vm_area_struct *vma)
+static void decrement_hugepage_resv_vma(struct hstate *h,
+ struct vm_area_struct *vma)
{
if (vma->vm_flags & VM_NORESERVE)
return;
if (vma->vm_flags & VM_SHARED) {
/* Shared mappings always use reserves */
- resv_huge_pages--;
+ h->resv_huge_pages--;
} else if (is_vma_resv_set(vma, HPAGE_RESV_OWNER)) {
/*
* Only the process that called mmap() has reserves for
* private mappings.
*/
- resv_huge_pages--;
+ h->resv_huge_pages--;
}
}
@@ -344,12 +339,13 @@ static int vma_has_private_reserves(struct vm_area_struct *vma)
return 1;
}
-static void clear_huge_page(struct page *page, unsigned long addr)
+static void clear_huge_page(struct page *page,
+ unsigned long addr, unsigned long sz)
{
int i;
might_sleep();
- for (i = 0; i < (HPAGE_SIZE/PAGE_SIZE); i++) {
+ for (i = 0; i < sz/PAGE_SIZE; i++) {
cond_resched();
clear_user_highpage(page + i, addr + i * PAGE_SIZE);
}
@@ -359,41 +355,43 @@ static void copy_huge_page(struct page *dst, struct page *src,
unsigned long addr, struct vm_area_struct *vma)
{
int i;
+ struct hstate *h = hstate_vma(vma);
might_sleep();
- for (i = 0; i < HPAGE_SIZE/PAGE_SIZE; i++) {
+ for (i = 0; i < pages_per_huge_page(h); i++) {
cond_resched();
copy_user_highpage(dst + i, src + i, addr + i*PAGE_SIZE, vma);
}
}
-static void enqueue_huge_page(struct page *page)
+static void enqueue_huge_page(struct hstate *h, struct page *page)
{
int nid = page_to_nid(page);
- list_add(&page->lru, &hugepage_freelists[nid]);
- free_huge_pages++;
- free_huge_pages_node[nid]++;
+ list_add(&page->lru, &h->hugepage_freelists[nid]);
+ h->free_huge_pages++;
+ h->free_huge_pages_node[nid]++;
}
-static struct page *dequeue_huge_page(void)
+static struct page *dequeue_huge_page(struct hstate *h)
{
int nid;
struct page *page = NULL;
for (nid = 0; nid < MAX_NUMNODES; ++nid) {
- if (!list_empty(&hugepage_freelists[nid])) {
- page = list_entry(hugepage_freelists[nid].next,
+ if (!list_empty(&h->hugepage_freelists[nid])) {
+ page = list_entry(h->hugepage_freelists[nid].next,
struct page, lru);
list_del(&page->lru);
- free_huge_pages--;
- free_huge_pages_node[nid]--;
+ h->free_huge_pages--;
+ h->free_huge_pages_node[nid]--;
break;
}
}
return page;
}
-static struct page *dequeue_huge_page_vma(struct vm_area_struct *vma,
+static struct page *dequeue_huge_page_vma(struct hstate *h,
+ struct vm_area_struct *vma,
unsigned long address, int avoid_reserve)
{
int nid;
@@ -411,26 +409,26 @@ static struct page *dequeue_huge_page_vma(struct vm_area_struct *vma,
* not "stolen". The child may still get SIGKILLed
*/
if (!vma_has_private_reserves(vma) &&
- free_huge_pages - resv_huge_pages == 0)
+ h->free_huge_pages - h->resv_huge_pages == 0)
return NULL;
/* If reserves cannot be used, ensure enough pages are in the pool */
- if (avoid_reserve && free_huge_pages - resv_huge_pages == 0)
+ if (avoid_reserve && h->free_huge_pages - h->resv_huge_pages == 0)
return NULL;
for_each_zone_zonelist_nodemask(zone, z, zonelist,
MAX_NR_ZONES - 1, nodemask) {
nid = zone_to_nid(zone);
if (cpuset_zone_allowed_softwall(zone, htlb_alloc_mask) &&
- !list_empty(&hugepage_freelists[nid])) {
- page = list_entry(hugepage_freelists[nid].next,
+ !list_empty(&h->hugepage_freelists[nid])) {
+ page = list_entry(h->hugepage_freelists[nid].next,
struct page, lru);
list_del(&page->lru);
- free_huge_pages--;
- free_huge_pages_node[nid]--;
+ h->free_huge_pages--;
+ h->free_huge_pages_node[nid]--;
if (!avoid_reserve)
- decrement_hugepage_resv_vma(vma);
+ decrement_hugepage_resv_vma(h, vma);
break;
}
@@ -439,12 +437,13 @@ static struct page *dequeue_huge_page_vma(struct vm_area_struct *vma,
return page;
}
-static void update_and_free_page(struct page *page)
+static void update_and_free_page(struct hstate *h, struct page *page)
{
int i;
- nr_huge_pages--;
- nr_huge_pages_node[page_to_nid(page)]--;
- for (i = 0; i < (HPAGE_SIZE / PAGE_SIZE); i++) {
+
+ h->nr_huge_pages--;
+ h->nr_huge_pages_node[page_to_nid(page)]--;
+ for (i = 0; i < pages_per_huge_page(h); i++) {
page[i].flags &= ~(1 << PG_locked | 1 << PG_error | 1 << PG_referenced |
1 << PG_dirty | 1 << PG_active | 1 << PG_reserved |
1 << PG_private | 1<< PG_writeback);
@@ -452,11 +451,16 @@ static void update_and_free_page(struct page *page)
set_compound_page_dtor(page, NULL);
set_page_refcounted(page);
arch_release_hugepage(page);
- __free_pages(page, HUGETLB_PAGE_ORDER);
+ __free_pages(page, huge_page_order(h));
}
static void free_huge_page(struct page *page)
{
+ /*
+ * Can't pass hstate in here because it is called from the
+ * compound page destructor.
+ */
+ struct hstate *h = &default_hstate;
int nid = page_to_nid(page);
struct address_space *mapping;
@@ -466,12 +470,12 @@ static void free_huge_page(struct page *page)
INIT_LIST_HEAD(&page->lru);
spin_lock(&hugetlb_lock);
- if (surplus_huge_pages_node[nid]) {
- update_and_free_page(page);
- surplus_huge_pages--;
- surplus_huge_pages_node[nid]--;
+ if (h->surplus_huge_pages_node[nid]) {
+ update_and_free_page(h, page);
+ h->surplus_huge_pages--;
+ h->surplus_huge_pages_node[nid]--;
} else {
- enqueue_huge_page(page);
+ enqueue_huge_page(h, page);
}
spin_unlock(&hugetlb_lock);
if (mapping)
@@ -483,7 +487,7 @@ static void free_huge_page(struct page *page)
* balanced by operating on them in a round-robin fashion.
* Returns 1 if an adjustment was made.
*/
-static int adjust_pool_surplus(int delta)
+static int adjust_pool_surplus(struct hstate *h, int delta)
{
static int prev_nid;
int nid = prev_nid;
@@ -496,15 +500,15 @@ static int adjust_pool_surplus(int delta)
nid = first_node(node_online_map);
/* To shrink on this node, there must be a surplus page */
- if (delta < 0 && !surplus_huge_pages_node[nid])
+ if (delta < 0 && !h->surplus_huge_pages_node[nid])
continue;
/* Surplus cannot exceed the total number of pages */
- if (delta > 0 && surplus_huge_pages_node[nid] >=
- nr_huge_pages_node[nid])
+ if (delta > 0 && h->surplus_huge_pages_node[nid] >=
+ h->nr_huge_pages_node[nid])
continue;
- surplus_huge_pages += delta;
- surplus_huge_pages_node[nid] += delta;
+ h->surplus_huge_pages += delta;
+ h->surplus_huge_pages_node[nid] += delta;
ret = 1;
break;
} while (nid != prev_nid);
@@ -513,46 +517,46 @@ static int adjust_pool_surplus(int delta)
return ret;
}
-static void prep_new_huge_page(struct page *page, int nid)
+static void prep_new_huge_page(struct hstate *h, struct page *page, int nid)
{
set_compound_page_dtor(page, free_huge_page);
spin_lock(&hugetlb_lock);
- nr_huge_pages++;
- nr_huge_pages_node[nid]++;
+ h->nr_huge_pages++;
+ h->nr_huge_pages_node[nid]++;
spin_unlock(&hugetlb_lock);
put_page(page); /* free it into the hugepage allocator */
}
-static struct page *alloc_fresh_huge_page_node(int nid)
+static struct page *alloc_fresh_huge_page_node(struct hstate *h, int nid)
{
struct page *page;
page = alloc_pages_node(nid,
htlb_alloc_mask|__GFP_COMP|__GFP_THISNODE|
__GFP_REPEAT|__GFP_NOWARN,
- HUGETLB_PAGE_ORDER);
+ huge_page_order(h));
if (page) {
if (arch_prepare_hugepage(page)) {
__free_pages(page, HUGETLB_PAGE_ORDER);
return NULL;
}
- prep_new_huge_page(page, nid);
+ prep_new_huge_page(h, page, nid);
}
return page;
}
-static int alloc_fresh_huge_page(void)
+static int alloc_fresh_huge_page(struct hstate *h)
{
struct page *page;
int start_nid;
int next_nid;
int ret = 0;
- start_nid = hugetlb_next_nid;
+ start_nid = h->hugetlb_next_nid;
do {
- page = alloc_fresh_huge_page_node(hugetlb_next_nid);
+ page = alloc_fresh_huge_page_node(h, h->hugetlb_next_nid);
if (page)
ret = 1;
/*
@@ -566,11 +570,11 @@ static int alloc_fresh_huge_page(void)
* if we just successfully allocated a hugepage so that
* the next caller gets hugepages on the next node.
*/
- next_nid = next_node(hugetlb_next_nid, node_online_map);
+ next_nid = next_node(h->hugetlb_next_nid, node_online_map);
if (next_nid == MAX_NUMNODES)
next_nid = first_node(node_online_map);
- hugetlb_next_nid = next_nid;
- } while (!page && hugetlb_next_nid != start_nid);
+ h->hugetlb_next_nid = next_nid;
+ } while (!page && h->hugetlb_next_nid != start_nid);
if (ret)
count_vm_event(HTLB_BUDDY_PGALLOC);
@@ -580,8 +584,8 @@ static int alloc_fresh_huge_page(void)
return ret;
}
-static struct page *alloc_buddy_huge_page(struct vm_area_struct *vma,
- unsigned long address)
+static struct page *alloc_buddy_huge_page(struct hstate *h,
+ struct vm_area_struct *vma, unsigned long address)
{
struct page *page;
unsigned int nid;
@@ -610,18 +614,18 @@ static struct page *alloc_buddy_huge_page(struct vm_area_struct *vma,
* per-node value is checked there.
*/
spin_lock(&hugetlb_lock);
- if (surplus_huge_pages >= nr_overcommit_huge_pages) {
+ if (h->surplus_huge_pages >= h->nr_overcommit_huge_pages) {
spin_unlock(&hugetlb_lock);
return NULL;
} else {
- nr_huge_pages++;
- surplus_huge_pages++;
+ h->nr_huge_pages++;
+ h->surplus_huge_pages++;
}
spin_unlock(&hugetlb_lock);
page = alloc_pages(htlb_alloc_mask|__GFP_COMP|
__GFP_REPEAT|__GFP_NOWARN,
- HUGETLB_PAGE_ORDER);
+ huge_page_order(h));
spin_lock(&hugetlb_lock);
if (page) {
@@ -636,12 +640,12 @@ static struct page *alloc_buddy_huge_page(struct vm_area_struct *vma,
/*
* We incremented the global counters already
*/
- nr_huge_pages_node[nid]++;
- surplus_huge_pages_node[nid]++;
+ h->nr_huge_pages_node[nid]++;
+ h->surplus_huge_pages_node[nid]++;
__count_vm_event(HTLB_BUDDY_PGALLOC);
} else {
- nr_huge_pages--;
- surplus_huge_pages--;
+ h->nr_huge_pages--;
+ h->surplus_huge_pages--;
__count_vm_event(HTLB_BUDDY_PGALLOC_FAIL);
}
spin_unlock(&hugetlb_lock);
@@ -653,16 +657,16 @@ static struct page *alloc_buddy_huge_page(struct vm_area_struct *vma,
* Increase the hugetlb pool such that it can accomodate a reservation
* of size 'delta'.
*/
-static int gather_surplus_pages(int delta)
+static int gather_surplus_pages(struct hstate *h, int delta)
{
struct list_head surplus_list;
struct page *page, *tmp;
int ret, i;
int needed, allocated;
- needed = (resv_huge_pages + delta) - free_huge_pages;
+ needed = (h->resv_huge_pages + delta) - h->free_huge_pages;
if (needed <= 0) {
- resv_huge_pages += delta;
+ h->resv_huge_pages += delta;
return 0;
}
@@ -673,7 +677,7 @@ static int gather_surplus_pages(int delta)
retry:
spin_unlock(&hugetlb_lock);
for (i = 0; i < needed; i++) {
- page = alloc_buddy_huge_page(NULL, 0);
+ page = alloc_buddy_huge_page(h, NULL, 0);
if (!page) {
/*
* We were not able to allocate enough pages to
@@ -694,7 +698,8 @@ retry:
* because either resv_huge_pages or free_huge_pages may have changed.
*/
spin_lock(&hugetlb_lock);
- needed = (resv_huge_pages + delta) - (free_huge_pages + allocated);
+ needed = (h->resv_huge_pages + delta) -
+ (h->free_huge_pages + allocated);
if (needed > 0)
goto retry;
@@ -707,7 +712,7 @@ retry:
* before they are reserved.
*/
needed += allocated;
- resv_huge_pages += delta;
+ h->resv_huge_pages += delta;
ret = 0;
free:
/* Free the needed pages to the hugetlb pool */
@@ -715,7 +720,7 @@ free:
if ((--needed) < 0)
break;
list_del(&page->lru);
- enqueue_huge_page(page);
+ enqueue_huge_page(h, page);
}
/* Free unnecessary surplus pages to the buddy allocator */
@@ -743,7 +748,8 @@ free:
* allocated to satisfy the reservation must be explicitly freed if they were
* never used.
*/
-static void return_unused_surplus_pages(unsigned long unused_resv_pages)
+static void return_unused_surplus_pages(struct hstate *h,
+ unsigned long unused_resv_pages)
{
static int nid = -1;
struct page *page;
@@ -758,27 +764,27 @@ static void return_unused_surplus_pages(unsigned long unused_resv_pages)
unsigned long remaining_iterations = num_online_nodes();
/* Uncommit the reservation */
- resv_huge_pages -= unused_resv_pages;
+ h->resv_huge_pages -= unused_resv_pages;
- nr_pages = min(unused_resv_pages, surplus_huge_pages);
+ nr_pages = min(unused_resv_pages, h->surplus_huge_pages);
while (remaining_iterations-- && nr_pages) {
nid = next_node(nid, node_online_map);
if (nid == MAX_NUMNODES)
nid = first_node(node_online_map);
- if (!surplus_huge_pages_node[nid])
+ if (!h->surplus_huge_pages_node[nid])
continue;
- if (!list_empty(&hugepage_freelists[nid])) {
- page = list_entry(hugepage_freelists[nid].next,
+ if (!list_empty(&h->hugepage_freelists[nid])) {
+ page = list_entry(h->hugepage_freelists[nid].next,
struct page, lru);
list_del(&page->lru);
- update_and_free_page(page);
- free_huge_pages--;
- free_huge_pages_node[nid]--;
- surplus_huge_pages--;
- surplus_huge_pages_node[nid]--;
+ update_and_free_page(h, page);
+ h->free_huge_pages--;
+ h->free_huge_pages_node[nid]--;
+ h->surplus_huge_pages--;
+ h->surplus_huge_pages_node[nid]--;
nr_pages--;
remaining_iterations = num_online_nodes();
}
@@ -794,13 +800,14 @@ static void return_unused_surplus_pages(unsigned long unused_resv_pages)
* an instantiated the change should be committed via vma_commit_reservation.
* No action is required on failure.
*/
-static int vma_needs_reservation(struct vm_area_struct *vma, unsigned long addr)
+static int vma_needs_reservation(struct hstate *h,
+ struct vm_area_struct *vma, unsigned long addr)
{
struct address_space *mapping = vma->vm_file->f_mapping;
struct inode *inode = mapping->host;
if (vma->vm_flags & VM_SHARED) {
- pgoff_t idx = vma_hugecache_offset(vma, addr);
+ pgoff_t idx = vma_hugecache_offset(h, vma, addr);
return region_chg(&inode->i_mapping->private_list,
idx, idx + 1);
@@ -809,7 +816,7 @@ static int vma_needs_reservation(struct vm_area_struct *vma, unsigned long addr)
} else {
int err;
- pgoff_t idx = vma_hugecache_offset(vma, addr);
+ pgoff_t idx = vma_hugecache_offset(h, vma, addr);
struct resv_map *reservations = vma_resv_map(vma);
err = region_chg(&reservations->regions, idx, idx + 1);
@@ -818,18 +825,18 @@ static int vma_needs_reservation(struct vm_area_struct *vma, unsigned long addr)
return 0;
}
}
-static void vma_commit_reservation(struct vm_area_struct *vma,
- unsigned long addr)
+static void vma_commit_reservation(struct hstate *h,
+ struct vm_area_struct *vma, unsigned long addr)
{
struct address_space *mapping = vma->vm_file->f_mapping;
struct inode *inode = mapping->host;
if (vma->vm_flags & VM_SHARED) {
- pgoff_t idx = vma_hugecache_offset(vma, addr);
+ pgoff_t idx = vma_hugecache_offset(h, vma, addr);
region_add(&inode->i_mapping->private_list, idx, idx + 1);
} else if (is_vma_resv_set(vma, HPAGE_RESV_OWNER)) {
- pgoff_t idx = vma_hugecache_offset(vma, addr);
+ pgoff_t idx = vma_hugecache_offset(h, vma, addr);
struct resv_map *reservations = vma_resv_map(vma);
/* Mark this page used in the map. */
@@ -840,6 +847,7 @@ static void vma_commit_reservation(struct vm_area_struct *vma,
static struct page *alloc_huge_page(struct vm_area_struct *vma,
unsigned long addr, int avoid_reserve)
{
+ struct hstate *h = hstate_vma(vma);
struct page *page;
struct address_space *mapping = vma->vm_file->f_mapping;
struct inode *inode = mapping->host;
@@ -852,7 +860,7 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
* MAP_NORESERVE mappings may also need pages and quota allocated
* if no reserve mapping overlaps.
*/
- chg = vma_needs_reservation(vma, addr);
+ chg = vma_needs_reservation(h, vma, addr);
if (chg < 0)
return ERR_PTR(chg);
if (chg)
@@ -860,11 +868,11 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
return ERR_PTR(-ENOSPC);
spin_lock(&hugetlb_lock);
- page = dequeue_huge_page_vma(vma, addr, avoid_reserve);
+ page = dequeue_huge_page_vma(h, vma, addr, avoid_reserve);
spin_unlock(&hugetlb_lock);
if (!page) {
- page = alloc_buddy_huge_page(vma, addr);
+ page = alloc_buddy_huge_page(h, vma, addr);
if (!page) {
hugetlb_put_quota(inode->i_mapping, chg);
return ERR_PTR(-VM_FAULT_OOM);
@@ -874,7 +882,7 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
set_page_refcounted(page);
set_page_private(page, (unsigned long) mapping);
- vma_commit_reservation(vma, addr);
+ vma_commit_reservation(h, vma, addr);
return page;
}
@@ -882,21 +890,28 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
static int __init hugetlb_init(void)
{
unsigned long i;
+ struct hstate *h = &default_hstate;
if (HPAGE_SHIFT == 0)
return 0;
+ if (!h->order) {
+ h->order = HPAGE_SHIFT - PAGE_SHIFT;
+ h->mask = HPAGE_MASK;
+ }
+
for (i = 0; i < MAX_NUMNODES; ++i)
- INIT_LIST_HEAD(&hugepage_freelists[i]);
+ INIT_LIST_HEAD(&h->hugepage_freelists[i]);
- hugetlb_next_nid = first_node(node_online_map);
+ h->hugetlb_next_nid = first_node(node_online_map);
for (i = 0; i < max_huge_pages; ++i) {
- if (!alloc_fresh_huge_page())
+ if (!alloc_fresh_huge_page(h))
break;
}
- max_huge_pages = free_huge_pages = nr_huge_pages = i;
- printk("Total HugeTLB memory allocated, %ld\n", free_huge_pages);
+ max_huge_pages = h->free_huge_pages = h->nr_huge_pages = i;
+ printk(KERN_INFO "Total HugeTLB memory allocated, %ld\n",
+ h->free_huge_pages);
return 0;
}
module_init(hugetlb_init);
@@ -922,34 +937,36 @@ static unsigned int cpuset_mems_nr(unsigned int *array)
#ifdef CONFIG_SYSCTL
#ifdef CONFIG_HIGHMEM
-static void try_to_free_low(unsigned long count)
+static void try_to_free_low(struct hstate *h, unsigned long count)
{
int i;
for (i = 0; i < MAX_NUMNODES; ++i) {
struct page *page, *next;
- list_for_each_entry_safe(page, next, &hugepage_freelists[i], lru) {
- if (count >= nr_huge_pages)
+ struct list_head *freel = &h->hugepage_freelists[i];
+ list_for_each_entry_safe(page, next, freel, lru) {
+ if (count >= h->nr_huge_pages)
return;
if (PageHighMem(page))
continue;
list_del(&page->lru);
update_and_free_page(page);
- free_huge_pages--;
- free_huge_pages_node[page_to_nid(page)]--;
+ h->free_huge_pages--;
+ h->free_huge_pages_node[page_to_nid(page)]--;
}
}
}
#else
-static inline void try_to_free_low(unsigned long count)
+static inline void try_to_free_low(struct hstate *h, unsigned long count)
{
}
#endif
-#define persistent_huge_pages (nr_huge_pages - surplus_huge_pages)
+#define persistent_huge_pages(h) (h->nr_huge_pages - h->surplus_huge_pages)
static unsigned long set_max_huge_pages(unsigned long count)
{
unsigned long min_count, ret;
+ struct hstate *h = &default_hstate;
/*
* Increase the pool size
@@ -963,19 +980,19 @@ static unsigned long set_max_huge_pages(unsigned long count)
* within all the constraints specified by the sysctls.
*/
spin_lock(&hugetlb_lock);
- while (surplus_huge_pages && count > persistent_huge_pages) {
- if (!adjust_pool_surplus(-1))
+ while (h->surplus_huge_pages && count > persistent_huge_pages(h)) {
+ if (!adjust_pool_surplus(h, -1))
break;
}
- while (count > persistent_huge_pages) {
+ while (count > persistent_huge_pages(h)) {
/*
* If this allocation races such that we no longer need the
* page, free_huge_page will handle it by freeing the page
* and reducing the surplus.
*/
spin_unlock(&hugetlb_lock);
- ret = alloc_fresh_huge_page();
+ ret = alloc_fresh_huge_page(h);
spin_lock(&hugetlb_lock);
if (!ret)
goto out;
@@ -997,21 +1014,21 @@ static unsigned long set_max_huge_pages(unsigned long count)
* and won't grow the pool anywhere else. Not until one of the
* sysctls are changed, or the surplus pages go out of use.
*/
- min_count = resv_huge_pages + nr_huge_pages - free_huge_pages;
+ min_count = h->resv_huge_pages + h->nr_huge_pages - h->free_huge_pages;
min_count = max(count, min_count);
- try_to_free_low(min_count);
- while (min_count < persistent_huge_pages) {
- struct page *page = dequeue_huge_page();
+ try_to_free_low(h, min_count);
+ while (min_count < persistent_huge_pages(h)) {
+ struct page *page = dequeue_huge_page(h);
if (!page)
break;
- update_and_free_page(page);
+ update_and_free_page(h, page);
}
- while (count < persistent_huge_pages) {
- if (!adjust_pool_surplus(1))
+ while (count < persistent_huge_pages(h)) {
+ if (!adjust_pool_surplus(h, 1))
break;
}
out:
- ret = persistent_huge_pages;
+ ret = persistent_huge_pages(h);
spin_unlock(&hugetlb_lock);
return ret;
}
@@ -1041,9 +1058,10 @@ int hugetlb_overcommit_handler(struct ctl_table *table, int write,
struct file *file, void __user *buffer,
size_t *length, loff_t *ppos)
{
+ struct hstate *h = &default_hstate;
proc_doulongvec_minmax(table, write, file, buffer, length, ppos);
spin_lock(&hugetlb_lock);
- nr_overcommit_huge_pages = sysctl_overcommit_huge_pages;
+ h->nr_overcommit_huge_pages = sysctl_overcommit_huge_pages;
spin_unlock(&hugetlb_lock);
return 0;
}
@@ -1052,37 +1070,40 @@ int hugetlb_overcommit_handler(struct ctl_table *table, int write,
int hugetlb_report_meminfo(char *buf)
{
+ struct hstate *h = &default_hstate;
return sprintf(buf,
"HugePages_Total: %5lu\n"
"HugePages_Free: %5lu\n"
"HugePages_Rsvd: %5lu\n"
"HugePages_Surp: %5lu\n"
"Hugepagesize: %5lu kB\n",
- nr_huge_pages,
- free_huge_pages,
- resv_huge_pages,
- surplus_huge_pages,
- HPAGE_SIZE/1024);
+ h->nr_huge_pages,
+ h->free_huge_pages,
+ h->resv_huge_pages,
+ h->surplus_huge_pages,
+ 1UL << (huge_page_order(h) + PAGE_SHIFT - 10));
}
int hugetlb_report_node_meminfo(int nid, char *buf)
{
+ struct hstate *h = &default_hstate;
return sprintf(buf,
"Node %d HugePages_Total: %5u\n"
"Node %d HugePages_Free: %5u\n"
"Node %d HugePages_Surp: %5u\n",
- nid, nr_huge_pages_node[nid],
- nid, free_huge_pages_node[nid],
- nid, surplus_huge_pages_node[nid]);
+ nid, h->nr_huge_pages_node[nid],
+ nid, h->free_huge_pages_node[nid],
+ nid, h->surplus_huge_pages_node[nid]);
}
/* Return the number pages of memory we physically have, in PAGE_SIZE units. */
unsigned long hugetlb_total_pages(void)
{
- return nr_huge_pages * (HPAGE_SIZE / PAGE_SIZE);
+ struct hstate *h = &default_hstate;
+ return h->nr_huge_pages * pages_per_huge_page(h);
}
-static int hugetlb_acct_memory(long delta)
+static int hugetlb_acct_memory(struct hstate *h, long delta)
{
int ret = -ENOMEM;
@@ -1105,18 +1126,18 @@ static int hugetlb_acct_memory(long delta)
* semantics that cpuset has.
*/
if (delta > 0) {
- if (gather_surplus_pages(delta) < 0)
+ if (gather_surplus_pages(h, delta) < 0)
goto out;
- if (delta > cpuset_mems_nr(free_huge_pages_node)) {
- return_unused_surplus_pages(delta);
+ if (delta > cpuset_mems_nr(h->free_huge_pages_node)) {
+ return_unused_surplus_pages(h, delta);
goto out;
}
}
ret = 0;
if (delta < 0)
- return_unused_surplus_pages((unsigned long) -delta);
+ return_unused_surplus_pages(h, (unsigned long) -delta);
out:
spin_unlock(&hugetlb_lock);
@@ -1141,14 +1162,15 @@ static void hugetlb_vm_op_open(struct vm_area_struct *vma)
static void hugetlb_vm_op_close(struct vm_area_struct *vma)
{
+ struct hstate *h = hstate_vma(vma);
struct resv_map *reservations = vma_resv_map(vma);
unsigned long reserve;
unsigned long start;
unsigned long end;
if (reservations) {
- start = vma_hugecache_offset(vma, vma->vm_start);
- end = vma_hugecache_offset(vma, vma->vm_end);
+ start = vma_hugecache_offset(h, vma, vma->vm_start);
+ end = vma_hugecache_offset(h, vma, vma->vm_end);
reserve = (end - start) -
region_count(&reservations->regions, start, end);
@@ -1156,7 +1178,7 @@ static void hugetlb_vm_op_close(struct vm_area_struct *vma)
kref_put(&reservations->refs, resv_map_release);
if (reserve)
- hugetlb_acct_memory(-reserve);
+ hugetlb_acct_memory(h, -reserve);
}
}
@@ -1214,14 +1236,16 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
struct page *ptepage;
unsigned long addr;
int cow;
+ struct hstate *h = hstate_vma(vma);
+ unsigned long sz = huge_page_size(h);
cow = (vma->vm_flags & (VM_SHARED | VM_MAYWRITE)) == VM_MAYWRITE;
- for (addr = vma->vm_start; addr < vma->vm_end; addr += HPAGE_SIZE) {
+ for (addr = vma->vm_start; addr < vma->vm_end; addr += sz) {
src_pte = huge_pte_offset(src, addr);
if (!src_pte)
continue;
- dst_pte = huge_pte_alloc(dst, addr);
+ dst_pte = huge_pte_alloc(dst, addr, sz);
if (!dst_pte)
goto nomem;
@@ -1257,6 +1281,9 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
pte_t pte;
struct page *page;
struct page *tmp;
+ struct hstate *h = hstate_vma(vma);
+ unsigned long sz = huge_page_size(h);
+
/*
* A page gathering list, protected by per file i_mmap_lock. The
* lock is used to avoid list corruption from multiple unmapping
@@ -1265,11 +1292,11 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
LIST_HEAD(page_list);
WARN_ON(!is_vm_hugetlb_page(vma));
- BUG_ON(start & ~HPAGE_MASK);
- BUG_ON(end & ~HPAGE_MASK);
+ BUG_ON(start & ~huge_page_mask(h));
+ BUG_ON(end & ~huge_page_mask(h));
spin_lock(&mm->page_table_lock);
- for (address = start; address < end; address += HPAGE_SIZE) {
+ for (address = start; address < end; address += sz) {
ptep = huge_pte_offset(mm, address);
if (!ptep)
continue;
@@ -1383,6 +1410,7 @@ static int hugetlb_cow(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, pte_t *ptep, pte_t pte,
struct page *pagecache_page)
{
+ struct hstate *h = hstate_vma(vma);
struct page *old_page, *new_page;
int avoidcopy;
int outside_reserve = 0;
@@ -1443,7 +1471,7 @@ retry_avoidcopy:
__SetPageUptodate(new_page);
spin_lock(&mm->page_table_lock);
- ptep = huge_pte_offset(mm, address & HPAGE_MASK);
+ ptep = huge_pte_offset(mm, address & huge_page_mask(h));
if (likely(pte_same(huge_ptep_get(ptep), pte))) {
/* Break COW */
huge_ptep_clear_flush(vma, address, ptep);
@@ -1458,14 +1486,14 @@ retry_avoidcopy:
}
/* Return the pagecache page at a given address within a VMA */
-static struct page *hugetlbfs_pagecache_page(struct vm_area_struct *vma,
- unsigned long address)
+static struct page *hugetlbfs_pagecache_page(struct hstate *h,
+ struct vm_area_struct *vma, unsigned long address)
{
struct address_space *mapping;
pgoff_t idx;
mapping = vma->vm_file->f_mapping;
- idx = vma_hugecache_offset(vma, address);
+ idx = vma_hugecache_offset(h, vma, address);
return find_lock_page(mapping, idx);
}
@@ -1473,6 +1501,7 @@ static struct page *hugetlbfs_pagecache_page(struct vm_area_struct *vma,
static int hugetlb_no_page(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, pte_t *ptep, int write_access)
{
+ struct hstate *h = hstate_vma(vma);
int ret = VM_FAULT_SIGBUS;
pgoff_t idx;
unsigned long size;
@@ -1493,7 +1522,7 @@ static int hugetlb_no_page(struct mm_struct *mm, struct vm_area_struct *vma,
}
mapping = vma->vm_file->f_mapping;
- idx = vma_hugecache_offset(vma, address);
+ idx = vma_hugecache_offset(h, vma, address);
/*
* Use page lock to guard against racing truncation
@@ -1502,7 +1531,7 @@ static int hugetlb_no_page(struct mm_struct *mm, struct vm_area_struct *vma,
retry:
page = find_lock_page(mapping, idx);
if (!page) {
- size = i_size_read(mapping->host) >> HPAGE_SHIFT;
+ size = i_size_read(mapping->host) >> huge_page_shift(h);
if (idx >= size)
goto out;
page = alloc_huge_page(vma, address, 0);
@@ -1510,7 +1539,7 @@ retry:
ret = -PTR_ERR(page);
goto out;
}
- clear_huge_page(page, address);
+ clear_huge_page(page, address, huge_page_size(h));
__SetPageUptodate(page);
if (vma->vm_flags & VM_SHARED) {
@@ -1526,14 +1555,14 @@ retry:
}
spin_lock(&inode->i_lock);
- inode->i_blocks += BLOCKS_PER_HUGEPAGE;
+ inode->i_blocks += blocks_per_huge_page(h);
spin_unlock(&inode->i_lock);
} else
lock_page(page);
}
spin_lock(&mm->page_table_lock);
- size = i_size_read(mapping->host) >> HPAGE_SHIFT;
+ size = i_size_read(mapping->host) >> huge_page_shift(h);
if (idx >= size)
goto backout;
@@ -1569,8 +1598,9 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
pte_t entry;
int ret;
static DEFINE_MUTEX(hugetlb_instantiation_mutex);
+ struct hstate *h = hstate_vma(vma);
- ptep = huge_pte_alloc(mm, address);
+ ptep = huge_pte_alloc(mm, address, huge_page_size(h));
if (!ptep)
return VM_FAULT_OOM;
@@ -1594,7 +1624,7 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
if (likely(pte_same(entry, huge_ptep_get(ptep))))
if (write_access && !pte_write(entry)) {
struct page *page;
- page = hugetlbfs_pagecache_page(vma, address);
+ page = hugetlbfs_pagecache_page(h, vma, address);
ret = hugetlb_cow(mm, vma, address, ptep, entry, page);
if (page) {
unlock_page(page);
@@ -1615,6 +1645,7 @@ int follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long pfn_offset;
unsigned long vaddr = *position;
int remainder = *length;
+ struct hstate *h = hstate_vma(vma);
spin_lock(&mm->page_table_lock);
while (vaddr < vma->vm_end && remainder) {
@@ -1626,7 +1657,7 @@ int follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
* each hugepage. We have to make * sure we get the
* first, for the page indexing below to work.
*/
- pte = huge_pte_offset(mm, vaddr & HPAGE_MASK);
+ pte = huge_pte_offset(mm, vaddr & huge_page_mask(h));
if (!pte || huge_pte_none(huge_ptep_get(pte)) ||
(write && !pte_write(huge_ptep_get(pte)))) {
@@ -1644,7 +1675,7 @@ int follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
break;
}
- pfn_offset = (vaddr & ~HPAGE_MASK) >> PAGE_SHIFT;
+ pfn_offset = (vaddr & ~huge_page_mask(h)) >> PAGE_SHIFT;
page = pte_page(huge_ptep_get(pte));
same_page:
if (pages) {
@@ -1660,7 +1691,7 @@ same_page:
--remainder;
++i;
if (vaddr < vma->vm_end && remainder &&
- pfn_offset < HPAGE_SIZE/PAGE_SIZE) {
+ pfn_offset < pages_per_huge_page(h)) {
/*
* We use pfn_offset to avoid touching the pageframes
* of this compound page.
@@ -1682,13 +1713,14 @@ void hugetlb_change_protection(struct vm_area_struct *vma,
unsigned long start = address;
pte_t *ptep;
pte_t pte;
+ struct hstate *h = hstate_vma(vma);
BUG_ON(address >= end);
flush_cache_range(vma, address, end);
spin_lock(&vma->vm_file->f_mapping->i_mmap_lock);
spin_lock(&mm->page_table_lock);
- for (; address < end; address += HPAGE_SIZE) {
+ for (; address < end; address += huge_page_size(h)) {
ptep = huge_pte_offset(mm, address);
if (!ptep)
continue;
@@ -1711,6 +1743,7 @@ int hugetlb_reserve_pages(struct inode *inode,
struct vm_area_struct *vma)
{
long ret, chg;
+ struct hstate *h = hstate_inode(inode);
if (vma && vma->vm_flags & VM_NORESERVE)
return 0;
@@ -1739,7 +1772,7 @@ int hugetlb_reserve_pages(struct inode *inode,
if (hugetlb_get_quota(inode->i_mapping, chg))
return -ENOSPC;
- ret = hugetlb_acct_memory(chg);
+ ret = hugetlb_acct_memory(h, chg);
if (ret < 0) {
hugetlb_put_quota(inode->i_mapping, chg);
return ret;
@@ -1751,12 +1784,13 @@ int hugetlb_reserve_pages(struct inode *inode,
void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed)
{
+ struct hstate *h = hstate_inode(inode);
long chg = region_truncate(&inode->i_mapping->private_list, offset);
spin_lock(&inode->i_lock);
- inode->i_blocks -= BLOCKS_PER_HUGEPAGE * freed;
+ inode->i_blocks -= blocks_per_huge_page(h);
spin_unlock(&inode->i_lock);
hugetlb_put_quota(inode->i_mapping, (chg - freed));
- hugetlb_acct_memory(-(chg - freed));
+ hugetlb_acct_memory(h, -(chg - freed));
}
diff --git a/mm/memory.c b/mm/memory.c
index 7293248..c1c1d6d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -903,7 +903,7 @@ unsigned long unmap_vmas(struct mmu_gather **tlbp,
if (unlikely(is_vm_hugetlb_page(vma))) {
unmap_hugepage_range(vma, start, end, NULL);
zap_work -= (end - start) /
- (HPAGE_SIZE / PAGE_SIZE);
+ pages_per_huge_page(hstate_vma(vma));
start = end;
} else
start = unmap_page_range(*tlbp, vma,
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index c94e58b..e550bec 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1481,7 +1481,7 @@ struct zonelist *huge_zonelist(struct vm_area_struct *vma, unsigned long addr,
if (unlikely((*mpol)->mode == MPOL_INTERLEAVE)) {
zl = node_zonelist(interleave_nid(*mpol, vma, addr,
- HPAGE_SHIFT), gfp_flags);
+ huge_page_shift(hstate_vma(vma))), gfp_flags);
} else {
zl = policy_zonelist(gfp_flags, *mpol);
if ((*mpol)->mode == MPOL_BIND)
@@ -2220,9 +2220,12 @@ static void check_huge_range(struct vm_area_struct *vma,
{
unsigned long addr;
struct page *page;
+ struct hstate *h = hstate_vma(vma);
+ unsigned long sz = huge_page_size(h);
- for (addr = start; addr < end; addr += HPAGE_SIZE) {
- pte_t *ptep = huge_pte_offset(vma->vm_mm, addr & HPAGE_MASK);
+ for (addr = start; addr < end; addr += sz) {
+ pte_t *ptep = huge_pte_offset(vma->vm_mm,
+ addr & huge_page_mask(h));
pte_t pte;
if (!ptep)
diff --git a/mm/mmap.c b/mm/mmap.c
index 57d3b60..5e0cc99 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1812,7 +1812,8 @@ int split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
struct mempolicy *pol;
struct vm_area_struct *new;
- if (is_vm_hugetlb_page(vma) && (addr & ~HPAGE_MASK))
+ if (is_vm_hugetlb_page(vma) && (addr &
+ ~(huge_page_mask(hstate_vma(vma)))))
return -EINVAL;
if (mm->map_count >= sysctl_max_map_count)
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