[PATCH 3/6 v2]cifs Fix warnings variables set but not used

["Justin P. Mattock" <justinmattock@gmail.com>]

This is a resend of the original, to fix whitespace issues
and to maybe do a better job with the issue.

The patch below fixes the warning messages from
gcc 4.6.0 and compiling the kernel.
  CC [M]  fs/cifs/cifssmb.o
fs/cifs/cifssmb.c: In function 'CIFSSMBSetFileSize':
fs/cifs/cifssmb.c:4855:8: warning: variable 'data_offset' set but not used
  CC [M]  fs/cifs/cifs_debug.o

  CC [M]  fs/cifs/dir.o
fs/cifs/dir.c: In function 'cifs_lookup':
fs/cifs/dir.c:641:15: warning: variable 'filp' set but not used

  CC [M]  fs/cifs/file.o
fs/cifs/file.c: In function 'cifs_partialpagewrite':
fs/cifs/file.c:1315:23: warning: variable 'pTcon' set but not used


 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
 fs/cifs/cifssmb.c |    2 +-
 fs/cifs/dir.c     |    3 +--
 fs/cifs/file.c    |    2 +-
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index c65c341..197349c 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -4852,7 +4852,7 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
 		   __u16 fid, __u32 pid_of_opener, bool SetAllocation)
 {
 	struct smb_com_transaction2_sfi_req *pSMB  = NULL;
-	char *data_offset;
+	char *data_offset __attribute__((unused));
 	struct file_end_of_file_info *parm_data;
 	int rc = 0;
 	__u16 params, param_offset, offset, byte_count, count;
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 391816b..b3d1be2 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -638,7 +638,6 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
 	struct cifsTconInfo *pTcon;
 	struct inode *newInode = NULL;
 	char *full_path = NULL;
-	struct file *filp;
 
 	xid = GetXid();
 
@@ -734,7 +733,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
 			direntry->d_op = &cifs_dentry_ops;
 		d_add(direntry, newInode);
 		if (posix_open)
-			filp = lookup_instantiate_filp(nd, direntry, NULL);
+			lookup_instantiate_filp(nd, direntry, NULL);
 		/* since paths are not looked up by component - the parent
 		   directories are presumed to be good here */
 		renew_parental_timestamps(direntry);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 75541af..73e540b 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1312,7 +1312,7 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
 	int rc = -EFAULT;
 	int bytes_written = 0;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
+	struct cifsTconInfo *pTcon __attribute__((unused));
 	struct inode *inode;
 	struct cifsFileInfo *open_file;
 
-- 
1.7.1.rc1.21.gf3bd6