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* [patch 4/11] btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs
@ 2010-05-29  9:44 Dan Carpenter
  0 siblings, 0 replies; only message in thread
From: Dan Carpenter @ 2010-05-29  9:44 UTC (permalink / raw)
  To: linux-btrfs
  Cc: Yan Zheng, Josef Bacik, Jens Axboe, Christoph Hellwig,
	kernel-janitors, Chris Mason

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 <>

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 73895ba..34f7c37 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -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);
 	if (!fs_info->fs_root)
 		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)) {

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2010-05-29  9:44 [patch 4/11] btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs Dan Carpenter

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