CIFS: Reconnect durable handles for SMB2
On reconnects, we need to reopen file and then obtain all byte-range
locks held by the client. SMB2 protocol provides feature to make
this process atomic by reconnecting to the same file handle
with all it's byte-range locks. This patch adds this capability
for SMB2 shares.
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steven French <steven@steven-GA-970A-DS3.(none)>
diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index 3989929..04a81a4 100644
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -40,7 +40,8 @@
oplock &= 0xFF;
if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
return;
- if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
+ if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
+ oplock == SMB2_OPLOCK_LEVEL_BATCH) {
cinode->clientCanCacheAll = true;
cinode->clientCanCacheRead = true;
cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",