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<pre>Under some conditions, the directory cannot be deleted.
The specific scenarios are as follows: (for example,
/mnt/ocfs2 is the mount point)
1. Create the /mnt/ocfs2/p_dir directory. At this time,
the i_nlink corresponding to the inode of
the /mnt/ocfs2/p_dir directory is equal to 2.
2. During the process of creating the
/mnt/ocfs2/p_dir/s_dir directory, if the call to the inc_nlink
function in ocfs2_mknod succeeds, the functions such as
ocfs2_init_acl, ocfs2_init_security_set, and ocfs2_dentry_attach_lock fail.
At this time, the i_nlink corresponding to the inode of the
/mnt/ocfs2/p_dir directory is equal to 3, but /mnt/ocfs2/p_dir/s_dir
is not added to the /mnt/ocfs2/p_dir directory entry.
3. Delete the /mnt/ocfs2/p_dir directory (rm -rf /mnt/ocfs2/p_dir).
At this time, it is found that the i_nlink corresponding to
the inode corresponding to the /mnt/ocfs2/p_dir directory is equal to 3.
Therefore, the /mnt/ocfs2/p_dir directory cannot be deleted.
Signed-off-by: Jian wang <a class="moz-txt-link-rfc2396E" href="mailto:wangjian161@huawei.com"><wangjian161@huawei.com></a>
---
ocfs2/namei.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/ocfs2/namei.c b/ocfs2/namei.c
index 8ea51cf..eaecab1 100644
--- a/ocfs2/namei.c
+++ b/ocfs2/namei.c
@@ -406,7 +406,7 @@ static int ocfs2_mknod(struct inode *dir,
        if (status < 0) {
                mlog_errno(status);
-                goto leave;
+                goto roll_back;
        }
        if (si.enable) {
@@ -414,7 +414,7 @@ static int ocfs2_mknod(struct inode *dir,
                                                 meta_ac, data_ac);
                if (status < 0) {
                        mlog_errno(status);
-                        goto leave;
+                        goto roll_back;
                }
        }
@@ -427,7 +427,7 @@ static int ocfs2_mknod(struct inode *dir,
                                         OCFS2_I(dir)->ip_blkno);
        if (status) {
                mlog_errno(status);
-                goto leave;
+                goto roll_back;
        }
        dl = dentry->d_fsdata;
@@ -437,12 +437,19 @@ static int ocfs2_mknod(struct inode *dir,
                                 &lookup);
        if (status < 0) {
                mlog_errno(status);
-                goto leave;
+                goto roll_back;
        }
        insert_inode_hash(inode);
        d_instantiate(dentry, inode);
        status = 0;
+
+roll_back:
+        if (status < 0 && S_ISDIR(mode)) {
+                ocfs2_add_links_count(dirfe, -1);
+                drop_nlink(dir);
+        }
+
leave:
        if (status < 0 && did_quota_inode)
                dquot_free_inode(inode);
--
1.8.3.1
</pre>
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