74 static inline void unlock_or_release_subpool(struct hugepage_subpool *spool)  in unlock_or_release_subpool()  argument
76 	bool free = (spool->count == 0) && (spool->used_hpages == 0);  in unlock_or_release_subpool()
78 	spin_unlock(&spool->lock);  in unlock_or_release_subpool()
84 		if (spool->min_hpages != -1)  in unlock_or_release_subpool()
85 			hugetlb_acct_memory(spool->hstate,  in unlock_or_release_subpool()
86 						-spool->min_hpages);  in unlock_or_release_subpool()
87 		kfree(spool);  in unlock_or_release_subpool()
94 	struct hugepage_subpool *spool;  in hugepage_new_subpool()  local
96 	spool = kzalloc(sizeof(*spool), GFP_KERNEL);  in hugepage_new_subpool()
97 	if (!spool)  in hugepage_new_subpool()
100 	spin_lock_init(&spool->lock);  in hugepage_new_subpool()
101 	spool->count = 1;  in hugepage_new_subpool()
102 	spool->max_hpages = max_hpages;  in hugepage_new_subpool()
103 	spool->hstate = h;  in hugepage_new_subpool()
104 	spool->min_hpages = min_hpages;  in hugepage_new_subpool()
107 		kfree(spool);  in hugepage_new_subpool()
110 	spool->rsv_hpages = min_hpages;  in hugepage_new_subpool()
112 	return spool;  in hugepage_new_subpool()
115 void hugepage_put_subpool(struct hugepage_subpool *spool)  in hugepage_put_subpool()  argument
117 	spin_lock(&spool->lock);  in hugepage_put_subpool()
118 	BUG_ON(!spool->count);  in hugepage_put_subpool()
119 	spool->count--;  in hugepage_put_subpool()
120 	unlock_or_release_subpool(spool);  in hugepage_put_subpool()
131 static long hugepage_subpool_get_pages(struct hugepage_subpool *spool,  in hugepage_subpool_get_pages()  argument
136 	if (!spool)  in hugepage_subpool_get_pages()
139 	spin_lock(&spool->lock);  in hugepage_subpool_get_pages()
141 	if (spool->max_hpages != -1) {		/* maximum size accounting */  in hugepage_subpool_get_pages()
142 		if ((spool->used_hpages + delta) <= spool->max_hpages)  in hugepage_subpool_get_pages()
143 			spool->used_hpages += delta;  in hugepage_subpool_get_pages()
151 	if (spool->min_hpages != -1 && spool->rsv_hpages) {  in hugepage_subpool_get_pages()
152 		if (delta > spool->rsv_hpages) {  in hugepage_subpool_get_pages()
157 			ret = delta - spool->rsv_hpages;  in hugepage_subpool_get_pages()
158 			spool->rsv_hpages = 0;  in hugepage_subpool_get_pages()
161 			spool->rsv_hpages -= delta;  in hugepage_subpool_get_pages()
166 	spin_unlock(&spool->lock);  in hugepage_subpool_get_pages()
176 static long hugepage_subpool_put_pages(struct hugepage_subpool *spool,  in hugepage_subpool_put_pages()  argument
181 	if (!spool)  in hugepage_subpool_put_pages()
184 	spin_lock(&spool->lock);  in hugepage_subpool_put_pages()
186 	if (spool->max_hpages != -1)		/* maximum size accounting */  in hugepage_subpool_put_pages()
187 		spool->used_hpages -= delta;  in hugepage_subpool_put_pages()
190 	if (spool->min_hpages != -1 && spool->used_hpages < spool->min_hpages) {  in hugepage_subpool_put_pages()
191 		if (spool->rsv_hpages + delta <= spool->min_hpages)  in hugepage_subpool_put_pages()
194 			ret = spool->rsv_hpages + delta - spool->min_hpages;  in hugepage_subpool_put_pages()
196 		spool->rsv_hpages += delta;  in hugepage_subpool_put_pages()
197 		if (spool->rsv_hpages > spool->min_hpages)  in hugepage_subpool_put_pages()
198 			spool->rsv_hpages = spool->min_hpages;  in hugepage_subpool_put_pages()
205 	unlock_or_release_subpool(spool);  in hugepage_subpool_put_pages()
212 	return HUGETLBFS_SB(inode->i_sb)->spool;  in subpool_inode()
574 	struct hugepage_subpool *spool = subpool_inode(inode);  in hugetlb_fix_reserve_counts()  local
577 	rsv_adjust = hugepage_subpool_get_pages(spool, 1);  in hugetlb_fix_reserve_counts()
1247 	struct hugepage_subpool *spool =  in free_huge_page()  local
1263 	if (hugepage_subpool_put_pages(spool, 1) == 0)  in free_huge_page()
1993 	struct hugepage_subpool *spool = subpool_vma(vma);  in alloc_huge_page()  local
2019 		gbl_chg = hugepage_subpool_get_pages(spool, 1);  in alloc_huge_page()
2064 	set_page_private(page, (unsigned long)spool);  in alloc_huge_page()
2079 		rsv_adjust = hugepage_subpool_put_pages(spool, 1);  in alloc_huge_page()
2088 		hugepage_subpool_put_pages(spool, 1);  in alloc_huge_page()
3113 	struct hugepage_subpool *spool = subpool_vma(vma);  in hugetlb_vm_op_close()  local
3132 		gbl_reserve = hugepage_subpool_put_pages(spool, reserve);  in hugetlb_vm_op_close()
4408 	struct hugepage_subpool *spool = subpool_inode(inode);  in hugetlb_reserve_pages()  local
4458 	gbl_reserve = hugepage_subpool_get_pages(spool, chg);  in hugetlb_reserve_pages()
4471 		(void)hugepage_subpool_put_pages(spool, chg);  in hugetlb_reserve_pages()
4499 			rsv_adjust = hugepage_subpool_put_pages(spool,  in hugetlb_reserve_pages()
4521 	struct hugepage_subpool *spool = subpool_inode(inode);  in hugetlb_unreserve_pages()  local
4543 	gbl_reserve = hugepage_subpool_put_pages(spool, (chg - freed));  in hugetlb_unreserve_pages()