Try this: mount a share with unix extensions create a file on it umount the share You'll get the following message in the ring buffer: VFS: Busy inodes after unmount of cifs. Self-destruct in 5 seconds. Have a nice day... ...the problem is that cifs_get_inode_info_unix is creating and hashing a new inode even when it's going to return error anyway. The first lookup when creating a file returns an error so we end up leaking this inode before we do the actual create. This appears to be a regression caused by commit 0e4bbde94fdc33f5b3d793166b21bf768ca3e098. The following patch seems to fix it for me, and fixes a minor formatting nit as well.
Unified · Split
| @@ -219,15 +219,15 @@ int cifs_get_inode_info_unix(struct inode **pinode, · 218 unmodified lines | |||
| 219 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, full_path, &find_data, | 219 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, full_path, &find_data, |
| 220 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & | 220 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 221 | CIFS_MOUNT_MAP_SPECIAL_CHR); | 221 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 222 | if (rc) { | 222 | if (rc == -EREMOTE && !is_dfs_referral) { |
| 223 | if (rc == -EREMOTE && !is_dfs_referral) { | 223 | is_dfs_referral = true; |
| 224 | is_dfs_referral = true; | 224 | cFYI(DBG2, ("DFS ref")); |
| 225 | cFYI(DBG2, ("DFS ref")); | 225 | /* for DFS, server does not give us real inode data */ |
| 226 | /* for DFS, server does not give us real inode data */ | 226 | fill_fake_finddataunix(&find_data, sb); |
| 227 | fill_fake_finddataunix(&find_data, sb); | 227 | rc = 0; |
| 228 | rc = 0; | 228 | } else if (rc) |
| 229 | } | 229 | goto cgiiu_exit; |
| 230 | } | 230 | |
| 231 | num_of_bytes = le64_to_cpu(find_data.NumOfBytes); | 231 | num_of_bytes = le64_to_cpu(find_data.NumOfBytes); |
| 232 | end_of_file = le64_to_cpu(find_data.EndOfFile); | 232 | end_of_file = le64_to_cpu(find_data.EndOfFile); |
| 233 | 233 | ||
| @@ -236,7 +236,7 @@ int cifs_get_inode_info_unix(struct inode **pinode, · 2 unmodified lines | |||
| 236 | *pinode = new_inode(sb); | 236 | *pinode = new_inode(sb); |
| 237 | if (*pinode == NULL) { | 237 | if (*pinode == NULL) { |
| 238 | rc = -ENOMEM; | 238 | rc = -ENOMEM; |
| 239 | goto cgiiu_exit; | 239 | goto cgiiu_exit; |
| 240 | } | 240 | } |
| 241 | /* Is an i_ino of zero legal? */ | 241 | /* Is an i_ino of zero legal? */ |
| 242 | /* note ino incremented to unique num in new_inode */ | 242 | /* note ino incremented to unique num in new_inode */ |