ocfs2: return error when ocfs2_figure_merge_contig_type() fails
ocfs2_figure_merge_contig_type() still returns CONTIG_NONE when some error
occurs which will cause an unpredictable error. So return a proper errno
when ocfs2_figure_merge_contig_type() fails.
Signed-off-by: joyce.xue <xuejiufei@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 2d7f76e..ea4c822 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -4311,13 +4311,13 @@
return ret;
}
-static enum ocfs2_contig_type
-ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
+static 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;
+ int status = 0;
enum ocfs2_contig_type ret = CONTIG_NONE;
u32 left_cpos, right_cpos;
struct ocfs2_extent_rec *rec = NULL;
@@ -4336,8 +4336,11 @@
if (left_cpos != 0) {
left_path = ocfs2_new_path_from_path(path);
- if (!left_path)
+ if (!left_path) {
+ status = -ENOMEM;
+ mlog_errno(status);
goto exit;
+ }
status = ocfs2_find_path(et->et_ci, left_path,
left_cpos);
@@ -4392,8 +4395,11 @@
goto free_left_path;
right_path = ocfs2_new_path_from_path(path);
- if (!right_path)
+ if (!right_path) {
+ status = -ENOMEM;
+ mlog_errno(status);
goto free_left_path;
+ }
status = ocfs2_find_path(et->et_ci, right_path, right_cpos);
if (status)
@@ -4433,7 +4439,10 @@
free_left_path:
ocfs2_free_path(left_path);
exit:
- return ret;
+ if (status == 0)
+ ctxt->c_contig_type = ret;
+
+ return status;
}
static void ocfs2_figure_contig_type(struct ocfs2_extent_tree *et,
@@ -5039,9 +5048,14 @@
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