1 files changed, 34 insertions, 25 deletions

diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 3ccadc1326d6..43f10281bc19 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -347,7 +347,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
                                 if (current_fsuid() != treeCon->ses->linux_uid) {
                                         cFYI(1, "Multiuser mode and UID "
                                                  "did not match tcon uid");
-                                        read_lock(&cifs_tcp_ses_lock);
+                                        spin_lock(&cifs_tcp_ses_lock);
                                         list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) {
                                                 ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list);
                                                 if (ses->linux_uid == current_fsuid()) {
@@ -361,7 +361,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
                                                         }
                                                 }
                                         }
-                                        read_unlock(&cifs_tcp_ses_lock);
+                                        spin_unlock(&cifs_tcp_ses_lock);
                                 }
                         }
                 }
@@ -551,7 +551,7 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
                 return false;
 
         /* look up tcon based on tid & uid */
-        read_lock(&cifs_tcp_ses_lock);
+        spin_lock(&cifs_tcp_ses_lock);
         list_for_each(tmp, &srv->smb_ses_list) {
                 ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
                 list_for_each(tmp1, &ses->tcon_list) {
@@ -560,51 +560,40 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
                                 continue;
 
                         cifs_stats_inc(&tcon->num_oplock_brks);
-                        read_lock(&GlobalSMBSeslock);
+                        spin_lock(&cifs_file_list_lock);
                         list_for_each(tmp2, &tcon->openFileList) {
                                 netfile = list_entry(tmp2, struct cifsFileInfo,
                                                      tlist);
                                 if (pSMB->Fid != netfile->netfid)
                                         continue;
 
-                                /*
-                                 * don't do anything if file is about to be
-                                 * closed anyway.
-                                 */
-                                if (netfile->closePend) {
-                                        read_unlock(&GlobalSMBSeslock);
-                                        read_unlock(&cifs_tcp_ses_lock);
-                                        return true;
-                                }
-
                                 cFYI(1, "file id match, oplock break");
-                                pCifsInode = CIFS_I(netfile->pInode);
-                                pCifsInode->clientCanCacheAll = false;
-                                if (pSMB->OplockLevel == 0)
-                                        pCifsInode->clientCanCacheRead = false;
+                                pCifsInode = CIFS_I(netfile->dentry->d_inode);
 
+                                cifs_set_oplock_level(pCifsInode,
+                                                      pSMB->OplockLevel);
                                 /*
                                  * cifs_oplock_break_put() can't be called
                                  * from here.  Get reference after queueing
                                  * succeeded.  cifs_oplock_break() will
-                                 * synchronize using GlobalSMSSeslock.
+                                 * synchronize using cifs_file_list_lock.
                                  */
                                 if (queue_work(system_nrt_wq,
                                                &netfile->oplock_break))
                                         cifs_oplock_break_get(netfile);
                                 netfile->oplock_break_cancelled = false;
 
-                                read_unlock(&GlobalSMBSeslock);
-                                read_unlock(&cifs_tcp_ses_lock);
+                                spin_unlock(&cifs_file_list_lock);
+                                spin_unlock(&cifs_tcp_ses_lock);
                                 return true;
                         }
-                        read_unlock(&GlobalSMBSeslock);
-                        read_unlock(&cifs_tcp_ses_lock);
+                        spin_unlock(&cifs_file_list_lock);
+                        spin_unlock(&cifs_tcp_ses_lock);
                         cFYI(1, "No matching file for oplock break");
                         return true;
                 }
         }
-        read_unlock(&cifs_tcp_ses_lock);
+        spin_unlock(&cifs_tcp_ses_lock);
         cFYI(1, "Can not process oplock break for non-existent connection");
         return true;
 }
@@ -729,6 +718,26 @@ cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb)
                            "properly. Hardlinks will not be recognized on this "
                            "mount. Consider mounting with the \"noserverino\" "
                            "option to silence this message.",
-                           cifs_sb->tcon->treeName);
+                           cifs_sb_master_tcon(cifs_sb)->treeName);
+        }
+}
+
+void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock)
+{
+        oplock &= 0xF;
+
+        if (oplock == OPLOCK_EXCLUSIVE) {
+                cinode->clientCanCacheAll = true;
+                cinode->clientCanCacheRead = true;
+                cFYI(1, "Exclusive Oplock granted on inode %p",
+                     &cinode->vfs_inode);
+        } else if (oplock == OPLOCK_READ) {
+                cinode->clientCanCacheAll = false;
+                cinode->clientCanCacheRead = true;
+                cFYI(1, "Level II Oplock granted on inode %p",
+                    &cinode->vfs_inode);
+        } else {
+                cinode->clientCanCacheAll = false;
+                cinode->clientCanCacheRead = false;
         }
 }