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Commit 34d73f54 authored by Alexander Block's avatar Alexander Block Committed by Chris Mason
Browse files

Btrfs: make aux field of ulist 64 bit 



Btrfs send/receive uses the aux field to store inode numbers. On
32 bit machines this may become a problem.

Also fix all users of ulist_add and ulist_add_merged.

Reported-by: default avatarArne Jansen <sensille@gmx.net>
Signed-off-by: default avatarAlexander Block <ablock84@googlemail.com>
parent 7e0926fe

fs/btrfs/backref.c

+4 −4
Original line number Diff line number Diff line
@@ -231,7 +231,7 @@ static int add_all_parents(struct btrfs_root *root, struct btrfs_path *path, 
			}

			if (!ret) {

				ret = ulist_add(parents, eb->start,

						(unsigned long)eie, GFP_NOFS);

						(u64)eie, GFP_NOFS);

				if (ret < 0)

					break;

				if (!extent_item_pos) {
@@ -914,8 +914,8 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, 
				free_extent_buffer(eb);

			}

			ret = ulist_add_merge(refs, ref->parent,

					      (unsigned long)ref->inode_list,

					      (unsigned long *)&eie, GFP_NOFS);

					      (u64)ref->inode_list,

					      (u64 *)&eie, GFP_NOFS);

			if (!ret && extent_item_pos) {

				/*

				 * we've recorded that parent, so we must extend
@@ -1404,7 +1404,7 @@ int iterate_extent_inodes(struct btrfs_fs_info *fs_info, 
		ULIST_ITER_INIT(&root_uiter);

		while (!ret && (root_node = ulist_next(roots, &root_uiter))) {

			pr_debug("root %llu references leaf %llu, data list "

				 "%#lx\n", root_node->val, ref_node->val,

				 "%#llx\n", root_node->val, ref_node->val,

				 ref_node->aux);

			ret = iterate_leaf_refs(

				(struct extent_inode_elem *)ref_node->aux,

fs/btrfs/qgroup.c

+10 −10
Original line number Diff line number Diff line
@@ -1145,7 +1145,7 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, 


		ulist_reinit(tmp);

						/* XXX id not needed */

		ulist_add(tmp, qg->qgroupid, (unsigned long)qg, GFP_ATOMIC);

		ulist_add(tmp, qg->qgroupid, (u64)qg, GFP_ATOMIC);

		ULIST_ITER_INIT(&tmp_uiter);

		while ((tmp_unode = ulist_next(tmp, &tmp_uiter))) {

			struct btrfs_qgroup_list *glist;
@@ -1158,7 +1158,7 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, 


			list_for_each_entry(glist, &qg->groups, next_group) {

				ulist_add(tmp, glist->group->qgroupid,

					  (unsigned long)glist->group,

					  (u64)glist->group,

					  GFP_ATOMIC);

			}

		}
@@ -1168,7 +1168,7 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, 
	 * step 2: walk from the new root

	 */

	ulist_reinit(tmp);

	ulist_add(tmp, qgroup->qgroupid, (unsigned long)qgroup, GFP_ATOMIC);

	ulist_add(tmp, qgroup->qgroupid, (u64)qgroup, GFP_ATOMIC);

	ULIST_ITER_INIT(&uiter);

	while ((unode = ulist_next(tmp, &uiter))) {

		struct btrfs_qgroup *qg;
@@ -1190,7 +1190,7 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, 


		list_for_each_entry(glist, &qg->groups, next_group) {

			ulist_add(tmp, glist->group->qgroupid,

				  (unsigned long)glist->group, GFP_ATOMIC);

				  (u64)glist->group, GFP_ATOMIC);

		}

	}
@@ -1208,7 +1208,7 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, 
			continue;



		ulist_reinit(tmp);

		ulist_add(tmp, qg->qgroupid, (unsigned long)qg, GFP_ATOMIC);

		ulist_add(tmp, qg->qgroupid, (u64)qg, GFP_ATOMIC);

		ULIST_ITER_INIT(&tmp_uiter);

		while ((tmp_unode = ulist_next(tmp, &tmp_uiter))) {

			struct btrfs_qgroup_list *glist;
@@ -1225,7 +1225,7 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, 


			list_for_each_entry(glist, &qg->groups, next_group) {

				ulist_add(tmp, glist->group->qgroupid,

					  (unsigned long)glist->group,

					  (u64)glist->group,

					  GFP_ATOMIC);

			}

		}
@@ -1469,7 +1469,7 @@ int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes) 
	 * be exceeded

	 */

	ulist = ulist_alloc(GFP_ATOMIC);

	ulist_add(ulist, qgroup->qgroupid, (unsigned long)qgroup, GFP_ATOMIC);

	ulist_add(ulist, qgroup->qgroupid, (u64)qgroup, GFP_ATOMIC);

	ULIST_ITER_INIT(&uiter);

	while ((unode = ulist_next(ulist, &uiter))) {

		struct btrfs_qgroup *qg;
@@ -1489,7 +1489,7 @@ int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes) 


		list_for_each_entry(glist, &qg->groups, next_group) {

			ulist_add(ulist, glist->group->qgroupid,

				  (unsigned long)glist->group, GFP_ATOMIC);

				  (u64)glist->group, GFP_ATOMIC);

		}

	}

	if (ret)
@@ -1541,7 +1541,7 @@ void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes) 
		goto out;



	ulist = ulist_alloc(GFP_ATOMIC);

	ulist_add(ulist, qgroup->qgroupid, (unsigned long)qgroup, GFP_ATOMIC);

	ulist_add(ulist, qgroup->qgroupid, (u64)qgroup, GFP_ATOMIC);

	ULIST_ITER_INIT(&uiter);

	while ((unode = ulist_next(ulist, &uiter))) {

		struct btrfs_qgroup *qg;
@@ -1553,7 +1553,7 @@ void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes) 


		list_for_each_entry(glist, &qg->groups, next_group) {

			ulist_add(ulist, glist->group->qgroupid,

				  (unsigned long)glist->group, GFP_ATOMIC);

				  (u64)glist->group, GFP_ATOMIC);

		}

	}

fs/btrfs/ulist.c

+3 −4
Original line number Diff line number Diff line
@@ -143,14 +143,13 @@ EXPORT_SYMBOL(ulist_free); 
 * In case of allocation failure -ENOMEM is returned and the ulist stays

 * unaltered.

 */

int ulist_add(struct ulist *ulist, u64 val, unsigned long aux,

	      gfp_t gfp_mask)

int ulist_add(struct ulist *ulist, u64 val, u64 aux, gfp_t gfp_mask)

{

	return ulist_add_merge(ulist, val, aux, NULL, gfp_mask);

}



int ulist_add_merge(struct ulist *ulist, u64 val, unsigned long aux,

		    unsigned long *old_aux, gfp_t gfp_mask)

int ulist_add_merge(struct ulist *ulist, u64 val, u64 aux,

		    u64 *old_aux, gfp_t gfp_mask)

{

	int i;

fs/btrfs/ulist.h

+4 −5
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@ struct ulist_iterator { 
 */

struct ulist_node {

	u64 val;		/* value to store */

	unsigned long aux;	/* auxiliary value saved along with the val */

	u64 aux;		/* auxiliary value saved along with the val */

};



struct ulist {
@@ -65,10 +65,9 @@ void ulist_fini(struct ulist *ulist); 
void ulist_reinit(struct ulist *ulist);

struct ulist *ulist_alloc(gfp_t gfp_mask);

void ulist_free(struct ulist *ulist);

int ulist_add(struct ulist *ulist, u64 val, unsigned long aux,

	      gfp_t gfp_mask);

int ulist_add_merge(struct ulist *ulist, u64 val, unsigned long aux,

		    unsigned long *old_aux, gfp_t gfp_mask);

int ulist_add(struct ulist *ulist, u64 val, u64 aux, gfp_t gfp_mask);

int ulist_add_merge(struct ulist *ulist, u64 val, u64 aux,

		    u64 *old_aux, gfp_t gfp_mask);

struct ulist_node *ulist_next(struct ulist *ulist,

			      struct ulist_iterator *uiter);