Re: [PATCH] cifs: use type __u32 instead of int for the oplock parameter

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On Fri, 17 Sep 2010 19:43:10 +0530
Suresh Jayaraman <sjayaraman@xxxxxxx> wrote:

> ... and avoid implicit casting from a signed type. Also, pass oplock by value
> instead by reference as we don't intend to change the value in
> cifs_open_inode_helper().
> 
> Thanks to Jeff Layton for spotting this.
> 
> Signed-off-by: Suresh Jayaraman <sjayaraman@xxxxxxx>
> ---
> 
>  fs/cifs/file.c |    8 ++++----
>  1 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/cifs/file.c b/fs/cifs/file.c
> index de748c6..d33da45 100644
> --- a/fs/cifs/file.c
> +++ b/fs/cifs/file.c
> @@ -165,7 +165,7 @@ psx_client_can_cache:
>  
>  /* all arguments to this function must be checked for validity in caller */
>  static inline int cifs_open_inode_helper(struct inode *inode,
> -	struct cifsTconInfo *pTcon, int *oplock, FILE_ALL_INFO *buf,
> +	struct cifsTconInfo *pTcon, __u32 oplock, FILE_ALL_INFO *buf,
>  	char *full_path, int xid)
>  {
>  	struct cifsInodeInfo *pCifsInode = CIFS_I(inode);
> @@ -207,11 +207,11 @@ client_can_cache:
>  		rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
>  					 xid, NULL);
>  
> -	if ((*oplock & 0xF) == OPLOCK_EXCLUSIVE) {
> +	if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
>  		pCifsInode->clientCanCacheAll = true;
>  		pCifsInode->clientCanCacheRead = true;
>  		cFYI(1, "Exclusive Oplock granted on inode %p", inode);
> -	} else if ((*oplock & 0xF) == OPLOCK_READ)
> +	} else if ((oplock & 0xF) == OPLOCK_READ)
>  		pCifsInode->clientCanCacheRead = true;
>  
>  	return rc;
> @@ -365,7 +365,7 @@ int cifs_open(struct inode *inode, struct file *file)
>  		goto out;
>  	}
>  
> -	rc = cifs_open_inode_helper(inode, tcon, &oplock, buf, full_path, xid);
> +	rc = cifs_open_inode_helper(inode, tcon, oplock, buf, full_path, xid);
>  	if (rc != 0)
>  		goto out;
>  
> --
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> 

Reviewed-by: Jeff Layton <jlayton@xxxxxxxxx>
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