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Commit b48652c1 authored by Yan Zheng's avatar Yan Zheng Committed by Chris Mason
Browse files

Btrfs: Various small fixes. 



This trivial patch contains two locking fixes and a off by one fix.

---

Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 3de9d6b6

fs/btrfs/ordered-data.c

+2 −2
Original line number Diff line number Diff line
@@ -548,7 +548,7 @@ int btrfs_ordered_update_i_size(struct inode *inode, 
		 */

		test = rb_entry(node, struct btrfs_ordered_extent, rb_node);

		if (test->file_offset > entry_end(ordered)) {

			i_size_test = test->file_offset - 1;

			i_size_test = test->file_offset;

		}

	} else {

		i_size_test = i_size_read(inode);
@@ -561,7 +561,7 @@ int btrfs_ordered_update_i_size(struct inode *inode, 
	 * disk_i_size to the end of the region.

	 */

	if (i_size_test > entry_end(ordered) &&

	    !test_range_bit(io_tree, entry_end(ordered), i_size_test,

	    !test_range_bit(io_tree, entry_end(ordered), i_size_test - 1,

			   EXTENT_DELALLOC, 0)) {

		new_i_size = min_t(u64, i_size_test, i_size_read(inode));

	}

fs/btrfs/root-tree.c

+1 −2
Original line number Diff line number Diff line
@@ -209,8 +209,7 @@ int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, 
			goto err;

		}



		ret = btrfs_add_dead_root(dead_root, latest,

					  &root->fs_info->dead_roots);

		ret = btrfs_add_dead_root(dead_root, latest);

		if (ret)

			goto err;

		goto again;

fs/btrfs/super.c

+2 −0
Original line number Diff line number Diff line
@@ -449,7 +449,9 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags, 
		s->s_flags |= MS_ACTIVE;

	}



	mutex_lock(&s->s_root->d_inode->i_mutex);

	root = lookup_one_len(subvol_name, s->s_root, strlen(subvol_name));

	mutex_unlock(&s->s_root->d_inode->i_mutex);

	if (IS_ERR(root)) {

		up_write(&s->s_umount);

		deactivate_super(s);

fs/btrfs/transaction.c

+5 −4
Original line number Diff line number Diff line
@@ -389,9 +389,7 @@ int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans, 
	return 0;

}



int btrfs_add_dead_root(struct btrfs_root *root,

			struct btrfs_root *latest,

			struct list_head *dead_list)

int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest)

{

	struct btrfs_dirty_root *dirty;
@@ -400,7 +398,10 @@ int btrfs_add_dead_root(struct btrfs_root *root, 
		return -ENOMEM;

	dirty->root = root;

	dirty->latest_root = latest;

	list_add(&dirty->list, dead_list);



	mutex_lock(&root->fs_info->trans_mutex);

	list_add(&dirty->list, &latest->fs_info->dead_roots);

	mutex_unlock(&root->fs_info->trans_mutex);

	return 0;

}

fs/btrfs/transaction.h

+1 −2
Original line number Diff line number Diff line
@@ -90,8 +90,7 @@ int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans, 
int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,

			    struct btrfs_root *root);



int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest,

			struct list_head *dead_list);

int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest);

int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);

int btrfs_clean_old_snapshots(struct btrfs_root *root);

int btrfs_commit_transaction(struct btrfs_trans_handle *trans,