Commit 8be57013 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 

Pull btrfs fixes from Chris Mason:
 "These are all from Filipe, and cover a few problems we've had reported
  on the list recently (along with ones he found on his own)"

* 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix file corruption after cloning inline extents
  Btrfs: fix order by which delayed references are run
  Btrfs: fix list transaction->pending_ordered corruption
  Btrfs: fix memory leak in the extent_same ioctl
  Btrfs: fix shrinking truncate when the no_holes feature is enabled
parents dfe91c97 ed958762

fs/btrfs/extent-tree.c

+13 −0
Original line number Diff line number Diff line
@@ -2296,9 +2296,22 @@ static int run_one_delayed_ref(struct btrfs_trans_handle *trans, 
static inline struct btrfs_delayed_ref_node *

select_delayed_ref(struct btrfs_delayed_ref_head *head)

{

	struct btrfs_delayed_ref_node *ref;



	if (list_empty(&head->ref_list))

		return NULL;



	/*

	 * Select a delayed ref of type BTRFS_ADD_DELAYED_REF first.

	 * This is to prevent a ref count from going down to zero, which deletes

	 * the extent item from the extent tree, when there still are references

	 * to add, which would fail because they would not find the extent item.

	 */

	list_for_each_entry(ref, &head->ref_list, list) {

		if (ref->action == BTRFS_ADD_DELAYED_REF)

			return ref;

	}



	return list_entry(head->ref_list.next, struct btrfs_delayed_ref_node,

			  list);

}

fs/btrfs/inode.c

+2 −3
Original line number Diff line number Diff line
@@ -4209,7 +4209,7 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, 
	u64 extent_num_bytes = 0;

	u64 extent_offset = 0;

	u64 item_end = 0;

	u64 last_size = (u64)-1;

	u64 last_size = new_size;

	u32 found_type = (u8)-1;

	int found_extent;

	int del_item;
@@ -4493,8 +4493,7 @@ out: 
			btrfs_abort_transaction(trans, root, ret);

	}

error:

	if (last_size != (u64)-1 &&

	    root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID)

	if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID)

		btrfs_ordered_update_i_size(inode, last_size, NULL);



	btrfs_free_path(path);

fs/btrfs/ioctl.c

+17 −1
Original line number Diff line number Diff line
@@ -3090,7 +3090,7 @@ out_unlock: 
static long btrfs_ioctl_file_extent_same(struct file *file,

			struct btrfs_ioctl_same_args __user *argp)

{

	struct btrfs_ioctl_same_args *same;

	struct btrfs_ioctl_same_args *same = NULL;

	struct btrfs_ioctl_same_extent_info *info;

	struct inode *src = file_inode(file);

	u64 off;
@@ -3120,6 +3120,7 @@ static long btrfs_ioctl_file_extent_same(struct file *file, 


	if (IS_ERR(same)) {

		ret = PTR_ERR(same);

		same = NULL;

		goto out;

	}
@@ -3190,6 +3191,7 @@ static long btrfs_ioctl_file_extent_same(struct file *file, 


out:

	mnt_drop_write_file(file);

	kfree(same);

	return ret;

}
@@ -3586,6 +3588,20 @@ process_slot: 
				u64 trim = 0;

				u64 aligned_end = 0;



				/*

				 * Don't copy an inline extent into an offset

				 * greater than zero. Having an inline extent

				 * at such an offset results in chaos as btrfs

				 * isn't prepared for such cases. Just skip

				 * this case for the same reasons as commented

				 * at btrfs_ioctl_clone().

				 */

				if (last_dest_end > 0) {

					ret = -EOPNOTSUPP;

					btrfs_end_transaction(trans, root);

					goto out;

				}



				if (off > key.offset) {

					skip = off - key.offset;

					new_key.offset += skip;

fs/btrfs/transaction.c

+2 −2
Original line number Diff line number Diff line
@@ -761,7 +761,7 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans, 


	if (!list_empty(&trans->ordered)) {

		spin_lock(&info->trans_lock);

		list_splice(&trans->ordered, &cur_trans->pending_ordered);

		list_splice_init(&trans->ordered, &cur_trans->pending_ordered);

		spin_unlock(&info->trans_lock);

	}
@@ -1866,7 +1866,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, 
	}



	spin_lock(&root->fs_info->trans_lock);

	list_splice(&trans->ordered, &cur_trans->pending_ordered);

	list_splice_init(&trans->ordered, &cur_trans->pending_ordered);

	if (cur_trans->state >= TRANS_STATE_COMMIT_START) {

		spin_unlock(&root->fs_info->trans_lock);

		atomic_inc(&cur_trans->use_count);

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