[Ocfs2-devel] [PATCH] ocfs2: return error while ocfs2_figure_merge_contig_type failing

From: Xue jiufei <xuejiufei@huawei.com>
To: ocfs2-devel@oss.oracle.com
Subject: [Ocfs2-devel] [PATCH] ocfs2: return error while ocfs2_figure_merge_contig_type failing
Date: Fri, 17 Apr 2015 17:09:04 +0800	[thread overview]
Message-ID: <5530CDB0.9040901@huawei.com> (raw)

Now function ocfs2_figure_merge_contig_type() still return CONTIG_NONE
when some error occurs which will cause unpredictable error.
So return error while ocfs2_figure_merge_contig_type failing.

Signed-off-by: joyce.xue <xuejiufei@huawei.com>
---
 fs/ocfs2/alloc.c | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 044158b..aa039f2 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -4313,11 +4313,11 @@ out:
 	return ret;
 }
 
-static enum ocfs2_contig_type
-ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
+int ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
 			       struct ocfs2_path *path,
 			       struct ocfs2_extent_list *el, int index,
-			       struct ocfs2_extent_rec *split_rec)
+			       struct ocfs2_extent_rec *split_rec,
+			       struct ocfs2_merge_ctxt *ctxt)
 {
 	int status;
 	enum ocfs2_contig_type ret = CONTIG_NONE;
@@ -4431,12 +4431,15 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
 	}
 
 out:
+	if (status == 0)
+		ctxt->c_contig_type = ret;
+
 	if (left_path)
 		ocfs2_free_path(left_path);
 	if (right_path)
 		ocfs2_free_path(right_path);
 
-	return ret;
+	return status;
 }
 
 static void ocfs2_figure_contig_type(struct ocfs2_extent_tree *et,
@@ -5042,9 +5045,14 @@ int ocfs2_split_extent(handle_t *handle,
 		goto out;
 	}
 
-	ctxt.c_contig_type = ocfs2_figure_merge_contig_type(et, path, el,
-							    split_index,
-							    split_rec);
+	ret =  ocfs2_figure_merge_contig_type(et, path, el,
+					      split_index,
+					      split_rec,
+					      &ctxt);
+	if (ret) {
+		mlog_errno(ret);
+		goto out;
+	}
 
 	/*
 	 * The core merge / split code wants to know how much room is
-- 
1.8.4.3
