589 	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);  in hugetlbfs_statfs()  local
594 	if (sbinfo) {  in hugetlbfs_statfs()
595 		spin_lock(&sbinfo->stat_lock);  in hugetlbfs_statfs()
598 		if (sbinfo->spool) {  in hugetlbfs_statfs()
601 			spin_lock(&sbinfo->spool->lock);  in hugetlbfs_statfs()
602 			buf->f_blocks = sbinfo->spool->max_hpages;  in hugetlbfs_statfs()
603 			free_pages = sbinfo->spool->max_hpages  in hugetlbfs_statfs()
604 				- sbinfo->spool->used_hpages;  in hugetlbfs_statfs()
606 			spin_unlock(&sbinfo->spool->lock);  in hugetlbfs_statfs()
607 			buf->f_files = sbinfo->max_inodes;  in hugetlbfs_statfs()
608 			buf->f_ffree = sbinfo->free_inodes;  in hugetlbfs_statfs()
610 		spin_unlock(&sbinfo->stat_lock);  in hugetlbfs_statfs()
630 static inline int hugetlbfs_dec_free_inodes(struct hugetlbfs_sb_info *sbinfo)  in hugetlbfs_dec_free_inodes()  argument
632 	if (sbinfo->free_inodes >= 0) {  in hugetlbfs_dec_free_inodes()
633 		spin_lock(&sbinfo->stat_lock);  in hugetlbfs_dec_free_inodes()
634 		if (unlikely(!sbinfo->free_inodes)) {  in hugetlbfs_dec_free_inodes()
635 			spin_unlock(&sbinfo->stat_lock);  in hugetlbfs_dec_free_inodes()
638 		sbinfo->free_inodes--;  in hugetlbfs_dec_free_inodes()
639 		spin_unlock(&sbinfo->stat_lock);  in hugetlbfs_dec_free_inodes()
645 static void hugetlbfs_inc_free_inodes(struct hugetlbfs_sb_info *sbinfo)  in hugetlbfs_inc_free_inodes()  argument
647 	if (sbinfo->free_inodes >= 0) {  in hugetlbfs_inc_free_inodes()
648 		spin_lock(&sbinfo->stat_lock);  in hugetlbfs_inc_free_inodes()
649 		sbinfo->free_inodes++;  in hugetlbfs_inc_free_inodes()
650 		spin_unlock(&sbinfo->stat_lock);  in hugetlbfs_inc_free_inodes()
659 	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(sb);  in hugetlbfs_alloc_inode()  local
662 	if (unlikely(!hugetlbfs_dec_free_inodes(sbinfo)))  in hugetlbfs_alloc_inode()
666 		hugetlbfs_inc_free_inodes(sbinfo);  in hugetlbfs_alloc_inode()
877 	struct hugetlbfs_sb_info *sbinfo;  in hugetlbfs_fill_super()  local
892 	sbinfo = kmalloc(sizeof(struct hugetlbfs_sb_info), GFP_KERNEL);  in hugetlbfs_fill_super()
893 	if (!sbinfo)  in hugetlbfs_fill_super()
895 	sb->s_fs_info = sbinfo;  in hugetlbfs_fill_super()
896 	sbinfo->hstate = config.hstate;  in hugetlbfs_fill_super()
897 	spin_lock_init(&sbinfo->stat_lock);  in hugetlbfs_fill_super()
898 	sbinfo->max_inodes = config.nr_inodes;  in hugetlbfs_fill_super()
899 	sbinfo->free_inodes = config.nr_inodes;  in hugetlbfs_fill_super()
900 	sbinfo->spool = NULL;  in hugetlbfs_fill_super()
907 		sbinfo->spool = hugepage_new_subpool(config.hstate,  in hugetlbfs_fill_super()
910 		if (!sbinfo->spool)  in hugetlbfs_fill_super()
924 	kfree(sbinfo->spool);  in hugetlbfs_fill_super()
925 	kfree(sbinfo);  in hugetlbfs_fill_super()