The patch titled
Subject: ocfs2: return error when ocfs2_figure_merge_contig_type() fails
has been added to the -mm tree. Its filename is
ocfs2-return-error-while-ocfs2_figure_merge_contig_type-failing.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-return-error-while-ocfs2_figure_merge_contig_type-failing.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-return-error-while-ocfs2_figure_merge_contig_type-failing.patch
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------------------------------------------------------
From: Xue jiufei <xuejiufei@xxxxxxxxxx>
Subject: 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@xxxxxxxxxx>
Cc: Mark Fasheh <mfasheh@xxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/alloc.c | 34 ++++++++++++++++++++++++----------
1 file changed, 24 insertions(+), 10 deletions(-)
diff -puN fs/ocfs2/alloc.c~ocfs2-return-error-while-ocfs2_figure_merge_contig_type-failing fs/ocfs2/alloc.c
--- a/fs/ocfs2/alloc.c~ocfs2-return-error-while-ocfs2_figure_merge_contig_type-failing
+++ a/fs/ocfs2/alloc.c
@@ -4311,13 +4311,13 @@ out:
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 @@ ocfs2_figure_merge_contig_type(struct oc
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 @@ ocfs2_figure_merge_contig_type(struct oc
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_right_path:
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 @@ 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
_
Patches currently in -mm which might be from xuejiufei@xxxxxxxxxx are
ocfs2-return-error-while-ocfs2_figure_merge_contig_type-failing.patch
ocfs2-dlm-fix-race-between-purge-and-get-lock-resource.patch
ocfs2-flush-inode-data-to-disk-and-free-inode-when-i_count-becomes-zero.patch
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