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-rw-r--r--fs/hugetlbfs/inode.c45
-rw-r--r--include/linux/hugetlb.h14
-rw-r--r--mm/hugetlb.c16
-rw-r--r--mm/memory.c18
4 files changed, 64 insertions, 29 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 516c581b5371..dbd01d262ca4 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -53,6 +53,7 @@ int sysctl_hugetlb_shm_group;
enum {
Opt_size, Opt_nr_inodes,
Opt_mode, Opt_uid, Opt_gid,
+ Opt_pagesize,
Opt_err,
};
@@ -62,6 +63,7 @@ static match_table_t tokens = {
{Opt_mode, "mode=%o"},
{Opt_uid, "uid=%u"},
{Opt_gid, "gid=%u"},
+ {Opt_pagesize, "pagesize=%s"},
{Opt_err, NULL},
};
@@ -750,6 +752,8 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig)
char *p, *rest;
substring_t args[MAX_OPT_ARGS];
int option;
+ unsigned long long size = 0;
+ enum { NO_SIZE, SIZE_STD, SIZE_PERCENT } setsize = NO_SIZE;
if (!options)
return 0;
@@ -780,17 +784,13 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig)
break;
case Opt_size: {
- unsigned long long size;
/* memparse() will accept a K/M/G without a digit */
if (!isdigit(*args[0].from))
goto bad_val;
size = memparse(args[0].from, &rest);
- if (*rest == '%') {
- size <<= HPAGE_SHIFT;
- size *= max_huge_pages;
- do_div(size, 100);
- }
- pconfig->nr_blocks = (size >> HPAGE_SHIFT);
+ setsize = SIZE_STD;
+ if (*rest == '%')
+ setsize = SIZE_PERCENT;
break;
}
@@ -801,6 +801,19 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig)
pconfig->nr_inodes = memparse(args[0].from, &rest);
break;
+ case Opt_pagesize: {
+ unsigned long ps;
+ ps = memparse(args[0].from, &rest);
+ pconfig->hstate = size_to_hstate(ps);
+ if (!pconfig->hstate) {
+ printk(KERN_ERR
+ "hugetlbfs: Unsupported page size %lu MB\n",
+ ps >> 20);
+ return -EINVAL;
+ }
+ break;
+ }
+
default:
printk(KERN_ERR "hugetlbfs: Bad mount option: \"%s\"\n",
p);
@@ -808,6 +821,18 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig)
break;
}
}
+
+ /* Do size after hstate is set up */
+ if (setsize > NO_SIZE) {
+ struct hstate *h = pconfig->hstate;
+ if (setsize == SIZE_PERCENT) {
+ size <<= huge_page_shift(h);
+ size *= h->max_huge_pages;
+ do_div(size, 100);
+ }
+ pconfig->nr_blocks = (size >> huge_page_shift(h));
+ }
+
return 0;
bad_val:
@@ -832,6 +857,7 @@ hugetlbfs_fill_super(struct super_block *sb, void *data, int silent)
config.uid = current->fsuid;
config.gid = current->fsgid;
config.mode = 0755;
+ config.hstate = &default_hstate;
ret = hugetlbfs_parse_options(data, &config);
if (ret)
return ret;
@@ -840,14 +866,15 @@ hugetlbfs_fill_super(struct super_block *sb, void *data, int silent)
if (!sbinfo)
return -ENOMEM;
sb->s_fs_info = sbinfo;
+ sbinfo->hstate = config.hstate;
spin_lock_init(&sbinfo->stat_lock);
sbinfo->max_blocks = config.nr_blocks;
sbinfo->free_blocks = config.nr_blocks;
sbinfo->max_inodes = config.nr_inodes;
sbinfo->free_inodes = config.nr_inodes;
sb->s_maxbytes = MAX_LFS_FILESIZE;
- sb->s_blocksize = HPAGE_SIZE;
- sb->s_blocksize_bits = HPAGE_SHIFT;
+ sb->s_blocksize = huge_page_size(config.hstate);
+ sb->s_blocksize_bits = huge_page_shift(config.hstate);
sb->s_magic = HUGETLBFS_MAGIC;
sb->s_op = &hugetlbfs_ops;
sb->s_time_gran = 1;
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index b75bdb4deba3..ba9263e631b9 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -100,6 +100,7 @@ struct hugetlbfs_config {
umode_t mode;
long nr_blocks;
long nr_inodes;
+ struct hstate *hstate;
};
struct hugetlbfs_sb_info {
@@ -108,6 +109,7 @@ struct hugetlbfs_sb_info {
long max_inodes; /* inodes allowed */
long free_inodes; /* inodes free */
spinlock_t stat_lock;
+ struct hstate *hstate;
};
@@ -191,19 +193,21 @@ extern unsigned int default_hstate_idx;
#define default_hstate (hstates[default_hstate_idx])
-static inline struct hstate *hstate_vma(struct vm_area_struct *vma)
+static inline struct hstate *hstate_inode(struct inode *i)
{
- return &default_hstate;
+ struct hugetlbfs_sb_info *hsb;
+ hsb = HUGETLBFS_SB(i->i_sb);
+ return hsb->hstate;
}
static inline struct hstate *hstate_file(struct file *f)
{
- return &default_hstate;
+ return hstate_inode(f->f_dentry->d_inode);
}
-static inline struct hstate *hstate_inode(struct inode *i)
+static inline struct hstate *hstate_vma(struct vm_area_struct *vma)
{
- return &default_hstate;
+ return hstate_file(vma->vm_file);
}
static inline unsigned long huge_page_size(struct hstate *h)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 82378d44a0c5..4cf7a90e9140 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1439,19 +1439,9 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end, struct page *ref_page)
{
- /*
- * It is undesirable to test vma->vm_file as it should be non-null
- * for valid hugetlb area. However, vm_file will be NULL in the error
- * cleanup path of do_mmap_pgoff. When hugetlbfs ->mmap method fails,
- * do_mmap_pgoff() nullifies vma->vm_file before calling this function
- * to clean up. Since no pte has actually been setup, it is safe to
- * do nothing in this case.
- */
- if (vma->vm_file) {
- spin_lock(&vma->vm_file->f_mapping->i_mmap_lock);
- __unmap_hugepage_range(vma, start, end, ref_page);
- spin_unlock(&vma->vm_file->f_mapping->i_mmap_lock);
- }
+ spin_lock(&vma->vm_file->f_mapping->i_mmap_lock);
+ __unmap_hugepage_range(vma, start, end, ref_page);
+ spin_unlock(&vma->vm_file->f_mapping->i_mmap_lock);
}
/*
diff --git a/mm/memory.c b/mm/memory.c
index c1c1d6d8c22b..02fc6b1047b0 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -901,9 +901,23 @@ 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) /
+ /*
+ * It is undesirable to test vma->vm_file as it
+ * should be non-null for valid hugetlb area.
+ * However, vm_file will be NULL in the error
+ * cleanup path of do_mmap_pgoff. When
+ * hugetlbfs ->mmap method fails,
+ * do_mmap_pgoff() nullifies vma->vm_file
+ * before calling this function to clean up.
+ * Since no pte has actually been setup, it is
+ * safe to do nothing in this case.
+ */
+ if (vma->vm_file) {
+ unmap_hugepage_range(vma, start, end, NULL);
+ zap_work -= (end - start) /
pages_per_huge_page(hstate_vma(vma));
+ }
+
start = end;
} else
start = unmap_page_range(*tlbp, vma,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 03:42:18 +0000