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Btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs 

btrfs_read_fs_root_no_name() returns ERR_PTRs on error so I added a
check for that.  It's not clear to me if it can also return NULL
pointers or not so I left the original NULL pointer check as is.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Dan Carpenter 2010-05-29 09:44:10 +00:00 committed by Chris Mason
parent d327099a23
commit 3140c9a34b
1 changed files with 4 additions and 0 deletions
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4
fs/btrfs/disk-io.c
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@ -1985,6 +1985,10 @@ struct btrfs_root *open_ctree(struct super_block *sb,
fs_info->fs_root = btrfs_read_fs_root_no_name(fs_info, &location); fs_info->fs_root = btrfs_read_fs_root_no_name(fs_info, &location);
if (!fs_info->fs_root) if (!fs_info->fs_root)
goto fail_trans_kthread; goto fail_trans_kthread;
if (IS_ERR(fs_info->fs_root)) {
err = PTR_ERR(fs_info->fs_root);
goto fail_trans_kthread;
}
if (!(sb->s_flags & MS_RDONLY)) { if (!(sb->s_flags & MS_RDONLY)) {
down_read(&fs_info->cleanup_work_sem); down_read(&fs_info->cleanup_work_sem);