CIFS: Add cifs_set_oplock_level

Simplify many places when we need to set oplock level on an inode.

Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 20 insertions, 3 deletions

diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index c4e296fe3518..d3b9ddebc17e 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -569,10 +569,9 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
 
                                 cFYI(1, "file id match, oplock break");
                                 pCifsInode = CIFS_I(netfile->dentry->d_inode);
-                                pCifsInode->clientCanCacheAll = false;
-                                if (pSMB->OplockLevel == 0)
-                                        pCifsInode->clientCanCacheRead = false;
 
+                                cifs_set_oplock_level(netfile->dentry->d_inode,
+                                                      pSMB->OplockLevel);
                                 /*
                                  * cifs_oplock_break_put() can't be called
                                  * from here.  Get reference after queueing
@@ -722,3 +721,21 @@ cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb)
                            cifs_sb_master_tcon(cifs_sb)->treeName);
         }
 }
+
+void cifs_set_oplock_level(struct inode *inode, __u32 oplock)
+{
+        struct cifsInodeInfo *cinode = CIFS_I(inode);
+
+        if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
+                cinode->clientCanCacheAll = true;
+                cinode->clientCanCacheRead = true;
+                cFYI(1, "Exclusive Oplock granted on inode %p", inode);
+        } else if ((oplock & 0xF) == OPLOCK_READ) {
+                cinode->clientCanCacheAll = false;
+                cinode->clientCanCacheRead = true;
+                cFYI(1, "Level II Oplock granted on inode %p", inode);
+        } else {
+                cinode->clientCanCacheAll = false;
+                cinode->clientCanCacheRead = false;
+        }
+}