2010-06-21 01:23:29

by Justin P. Mattock

[permalink] [raw]
Subject: [PATCH 3/6 v3]cifs Fix warnings variables set but not used

Below is a redu from the original(or similar) fixing
gcc warningds generated while compiling:

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

(the warning below is funky i.g. removing pTcon generates the warning below
but if I use the __unused option there is no warning at all).

CC [M] fs/cifs/file.o
fs/cifs/file.c: In function 'cifs_partialpagewrite':
fs/cifs/file.c:1314:23: warning: variable 'cifs_sb' set but not used

Signed-off-by: Justin P. Mattock <[email protected]>

---
fs/cifs/cifssmb.c | 3 ---
fs/cifs/file.c | 4 ----
2 files changed, 0 insertions(+), 7 deletions(-)

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index c65c341..4653aaa 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -4852,7 +4852,6 @@ 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;
struct file_end_of_file_info *parm_data;
int rc = 0;
__u16 params, param_offset, offset, byte_count, count;
@@ -4876,8 +4875,6 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
offset = param_offset + params;

- data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
-
count = sizeof(struct file_end_of_file_info);
pSMB->MaxParameterCount = cpu_to_le16(2);
/* BB find exact max SMB PDU from sess structure BB */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 75541af..661f868 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1311,8 +1311,6 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
char *write_data;
int rc = -EFAULT;
int bytes_written = 0;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
struct inode *inode;
struct cifsFileInfo *open_file;

@@ -1320,8 +1318,6 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
return -EFAULT;

inode = page->mapping->host;
- cifs_sb = CIFS_SB(inode->i_sb);
- pTcon = cifs_sb->tcon;

offset += (loff_t)from;
write_data = kmap(page);
--
1.7.1.rc1.21.gf3bd6


2010-06-21 01:40:27

by Jeffrey Layton

[permalink] [raw]
Subject: Re: [PATCH 3/6 v3]cifs Fix warnings variables set but not used

On Sun, 20 Jun 2010 18:23:21 -0700
"Justin P. Mattock" <[email protected]> wrote:

> Below is a redu from the original(or similar) fixing
> gcc warningds generated while compiling:
>
> 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/file.o
> fs/cifs/file.c: In function 'cifs_partialpagewrite':
> fs/cifs/file.c:1315:23: warning: variable 'pTcon' set but not used
>
> (the warning below is funky i.g. removing pTcon generates the warning below
> but if I use the __unused option there is no warning at all).
>
> CC [M] fs/cifs/file.o
> fs/cifs/file.c: In function 'cifs_partialpagewrite':
> fs/cifs/file.c:1314:23: warning: variable 'cifs_sb' set but not used
>
> Signed-off-by: Justin P. Mattock <[email protected]>
>
> ---
> fs/cifs/cifssmb.c | 3 ---
> fs/cifs/file.c | 4 ----
> 2 files changed, 0 insertions(+), 7 deletions(-)
>
> diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
> index c65c341..4653aaa 100644
> --- a/fs/cifs/cifssmb.c
> +++ b/fs/cifs/cifssmb.c
> @@ -4852,7 +4852,6 @@ 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;
> struct file_end_of_file_info *parm_data;
> int rc = 0;
> __u16 params, param_offset, offset, byte_count, count;
> @@ -4876,8 +4875,6 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
> param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
> offset = param_offset + params;
>
> - data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
> -
> count = sizeof(struct file_end_of_file_info);
> pSMB->MaxParameterCount = cpu_to_le16(2);
> /* BB find exact max SMB PDU from sess structure BB */
> diff --git a/fs/cifs/file.c b/fs/cifs/file.c
> index 75541af..661f868 100644
> --- a/fs/cifs/file.c
> +++ b/fs/cifs/file.c
> @@ -1311,8 +1311,6 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
> char *write_data;
> int rc = -EFAULT;
> int bytes_written = 0;
> - struct cifs_sb_info *cifs_sb;
> - struct cifsTconInfo *pTcon;
> struct inode *inode;
> struct cifsFileInfo *open_file;
>
> @@ -1320,8 +1318,6 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
> return -EFAULT;
>
> inode = page->mapping->host;
> - cifs_sb = CIFS_SB(inode->i_sb);
> - pTcon = cifs_sb->tcon;
>
> offset += (loff_t)from;
> write_data = kmap(page);

Looks good to me.

Reviewed-by: Jeff Layton <[email protected]>