fs/hugetlbfs/inode.c

1156 	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(root->d_sb);
1157 	struct hugepage_subpool *spool = sbinfo->spool;
1158 	unsigned long hpage_size = huge_page_size(sbinfo->hstate);
1159 	unsigned hpage_shift = huge_page_shift(sbinfo->hstate);
1162 	if (!uid_eq(sbinfo->uid, GLOBAL_ROOT_UID))
1164 			   from_kuid_munged(&init_user_ns, sbinfo->uid));
1165 	if (!gid_eq(sbinfo->gid, GLOBAL_ROOT_GID))
1167 			   from_kgid_munged(&init_user_ns, sbinfo->gid));
1168 	if (sbinfo->mode != 0755)
1169 		seq_printf(m, ",mode=%o", sbinfo->mode);
1170 	if (sbinfo->max_inodes != -1)
1171 		seq_printf(m, ",nr_inodes=%lu", sbinfo->max_inodes);
1193 	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);
1200 	if (sbinfo) {
1201 		spin_lock(&sbinfo->stat_lock);
1204 		if (sbinfo->spool) {
1207 			spin_lock_irq(&sbinfo->spool->lock);
1208 			buf->f_blocks = sbinfo->spool->max_hpages;
1209 			free_pages = sbinfo->spool->max_hpages
1210 				- sbinfo->spool->used_hpages;
1212 			spin_unlock_irq(&sbinfo->spool->lock);
1213 			buf->f_files = sbinfo->max_inodes;
1214 			buf->f_ffree = sbinfo->free_inodes;
1216 		spin_unlock(&sbinfo->stat_lock);
1236 static inline int hugetlbfs_dec_free_inodes(struct hugetlbfs_sb_info *sbinfo)
1238 	if (sbinfo->free_inodes >= 0) {
1239 		spin_lock(&sbinfo->stat_lock);
1240 		if (unlikely(!sbinfo->free_inodes)) {
1241 			spin_unlock(&sbinfo->stat_lock);
1244 		sbinfo->free_inodes--;
1245 		spin_unlock(&sbinfo->stat_lock);
1251 static void hugetlbfs_inc_free_inodes(struct hugetlbfs_sb_info *sbinfo)
1253 	if (sbinfo->free_inodes >= 0) {
1254 		spin_lock(&sbinfo->stat_lock);
1255 		sbinfo->free_inodes++;
1256 		spin_unlock(&sbinfo->stat_lock);
1265 	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(sb);
1268 	if (unlikely(!hugetlbfs_dec_free_inodes(sbinfo)))
1272 		hugetlbfs_inc_free_inodes(sbinfo);
1477 	struct hugetlbfs_sb_info *sbinfo;
1479 	sbinfo = kmalloc(sizeof(struct hugetlbfs_sb_info), GFP_KERNEL);
1480 	if (!sbinfo)
1482 	sb->s_fs_info = sbinfo;
1483 	spin_lock_init(&sbinfo->stat_lock);
1484 	sbinfo->hstate		= ctx->hstate;
1485 	sbinfo->max_inodes	= ctx->nr_inodes;
1486 	sbinfo->free_inodes	= ctx->nr_inodes;
1487 	sbinfo->spool		= NULL;
1488 	sbinfo->uid		= ctx->uid;
1489 	sbinfo->gid		= ctx->gid;
1490 	sbinfo->mode		= ctx->mode;
1498 		sbinfo->spool = hugepage_new_subpool(ctx->hstate,
1501 		if (!sbinfo->spool)
1521 	kfree(sbinfo->spool);
1522 	kfree(sbinfo);