ocfs2: Remove bug statement in ocfs2_dentry_iput()

The existing bug statement didn't take into account unhashed dentries which
might not have a cluster lock on them. This could happen if a node exporting
the file system via NFS is rebooted, re-exported to nfs clients and then
unmounted. It's fine in this case to not have a dentry cluster lock.

Just remove the bug statement and replace it with an error print, which
does the proper checks. Though we want to know if something has happened
which might have prevented a cluster lock from being created, it's
definitely not necessary to panic the machine for this.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index 1957a5ed219e5845e88c3ec47e1b02e0b34d6a3f..9923278ea6d4df3f3ef0b9cd8247d64e86c9a849 100644 (file)
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -344,12 +344,24 @@ static void ocfs2_dentry_iput(struct dentry *dentry, struct inode *inode)
 {
        struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
 
-       mlog_bug_on_msg(!dl && !(dentry->d_flags & DCACHE_DISCONNECTED),
-                       "dentry: %.*s\n", dentry->d_name.len,
-                       dentry->d_name.name);
+       if (!dl) {
+               /*
+                * No dentry lock is ok if we're disconnected or
+                * unhashed.
+                */
+               if (!(dentry->d_flags & DCACHE_DISCONNECTED) &&
+                   !d_unhashed(dentry)) {
+                       unsigned long long ino = 0ULL;
+                       if (inode)
+                               ino = (unsigned long long)OCFS2_I(inode)->ip_blkno;
+                       mlog(ML_ERROR, "Dentry is missing cluster lock. "
+                            "inode: %llu, d_flags: 0x%x, d_name: %.*s\n",
+                            ino, dentry->d_flags, dentry->d_name.len,
+                            dentry->d_name.name);
+               }
 
-       if (!dl)
                goto out;
+       }
 
        mlog_bug_on_msg(dl->dl_count == 0, "dentry: %.*s, count: %u\n",
                        dentry->d_name.len, dentry->d_name.name,