855 	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);  in hugetlbfs_statfs()  local
860 	if (sbinfo) {  in hugetlbfs_statfs()
861 		spin_lock(&sbinfo->stat_lock);  in hugetlbfs_statfs()
864 		if (sbinfo->spool) {  in hugetlbfs_statfs()
867 			spin_lock(&sbinfo->spool->lock);  in hugetlbfs_statfs()
868 			buf->f_blocks = sbinfo->spool->max_hpages;  in hugetlbfs_statfs()
869 			free_pages = sbinfo->spool->max_hpages  in hugetlbfs_statfs()
870 				- sbinfo->spool->used_hpages;  in hugetlbfs_statfs()
872 			spin_unlock(&sbinfo->spool->lock);  in hugetlbfs_statfs()
873 			buf->f_files = sbinfo->max_inodes;  in hugetlbfs_statfs()
874 			buf->f_ffree = sbinfo->free_inodes;  in hugetlbfs_statfs()
876 		spin_unlock(&sbinfo->stat_lock);  in hugetlbfs_statfs()
896 static inline int hugetlbfs_dec_free_inodes(struct hugetlbfs_sb_info *sbinfo)  in hugetlbfs_dec_free_inodes()  argument
898 	if (sbinfo->free_inodes >= 0) {  in hugetlbfs_dec_free_inodes()
899 		spin_lock(&sbinfo->stat_lock);  in hugetlbfs_dec_free_inodes()
900 		if (unlikely(!sbinfo->free_inodes)) {  in hugetlbfs_dec_free_inodes()
901 			spin_unlock(&sbinfo->stat_lock);  in hugetlbfs_dec_free_inodes()
904 		sbinfo->free_inodes--;  in hugetlbfs_dec_free_inodes()
905 		spin_unlock(&sbinfo->stat_lock);  in hugetlbfs_dec_free_inodes()
911 static void hugetlbfs_inc_free_inodes(struct hugetlbfs_sb_info *sbinfo)  in hugetlbfs_inc_free_inodes()  argument
913 	if (sbinfo->free_inodes >= 0) {  in hugetlbfs_inc_free_inodes()
914 		spin_lock(&sbinfo->stat_lock);  in hugetlbfs_inc_free_inodes()
915 		sbinfo->free_inodes++;  in hugetlbfs_inc_free_inodes()
916 		spin_unlock(&sbinfo->stat_lock);  in hugetlbfs_inc_free_inodes()
925 	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(sb);  in hugetlbfs_alloc_inode()  local
928 	if (unlikely(!hugetlbfs_dec_free_inodes(sbinfo)))  in hugetlbfs_alloc_inode()
932 		hugetlbfs_inc_free_inodes(sbinfo);  in hugetlbfs_alloc_inode()
1144 	struct hugetlbfs_sb_info *sbinfo;  in hugetlbfs_fill_super()  local
1159 	sbinfo = kmalloc(sizeof(struct hugetlbfs_sb_info), GFP_KERNEL);  in hugetlbfs_fill_super()
1160 	if (!sbinfo)  in hugetlbfs_fill_super()
1162 	sb->s_fs_info = sbinfo;  in hugetlbfs_fill_super()
1163 	sbinfo->hstate = config.hstate;  in hugetlbfs_fill_super()
1164 	spin_lock_init(&sbinfo->stat_lock);  in hugetlbfs_fill_super()
1165 	sbinfo->max_inodes = config.nr_inodes;  in hugetlbfs_fill_super()
1166 	sbinfo->free_inodes = config.nr_inodes;  in hugetlbfs_fill_super()
1167 	sbinfo->spool = NULL;  in hugetlbfs_fill_super()
1174 		sbinfo->spool = hugepage_new_subpool(config.hstate,  in hugetlbfs_fill_super()
1177 		if (!sbinfo->spool)  in hugetlbfs_fill_super()
1191 	kfree(sbinfo->spool);  in hugetlbfs_fill_super()
1192 	kfree(sbinfo);  in hugetlbfs_fill_super()