diff mbox

nfsd: nfs4_file_get_access: need to be more careful with O_RDWR

Message ID 1374552314.5454.89.camel@serendib (mailing list archive)
State New, archived
Headers show

Commit Message

Harshula Jayasuriya July 23, 2013, 4:05 a.m. UTC
If fi_fds = {non-NULL, NULL, non-NULL} and oflag = O_WRONLY
the WARN_ON_ONCE(!(fp->fi_fds[oflag] || fp->fi_fds[O_RDWR]))
doesn't trigger when it should.

Signed-off-by: Harshula Jayasuriya <harshula@redhat.com>
---
 fs/nfsd/nfs4state.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

Comments

J. Bruce Fields July 23, 2013, 4:28 p.m. UTC | #1
Thanks, applying for 3.12.--b.

On Tue, Jul 23, 2013 at 02:05:14PM +1000, Harshula Jayasuriya wrote:
> If fi_fds = {non-NULL, NULL, non-NULL} and oflag = O_WRONLY
> the WARN_ON_ONCE(!(fp->fi_fds[oflag] || fp->fi_fds[O_RDWR]))
> doesn't trigger when it should.
> 
> Signed-off-by: Harshula Jayasuriya <harshula@redhat.com>
> ---
>  fs/nfsd/nfs4state.c | 13 ++++---------
>  1 file changed, 4 insertions(+), 9 deletions(-)
> 
> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> index 280acef..1cb6211 100644
> --- a/fs/nfsd/nfs4state.c
> +++ b/fs/nfsd/nfs4state.c
> @@ -282,19 +282,14 @@ static unsigned int file_hashval(struct inode *ino)
>  
>  static struct hlist_head file_hashtbl[FILE_HASH_SIZE];
>  
> -static void __nfs4_file_get_access(struct nfs4_file *fp, int oflag)
> -{
> -	WARN_ON_ONCE(!(fp->fi_fds[oflag] || fp->fi_fds[O_RDWR]));
> -	atomic_inc(&fp->fi_access[oflag]);
> -}
> -
>  static void nfs4_file_get_access(struct nfs4_file *fp, int oflag)
>  {
> +	WARN_ON_ONCE(!fp->fi_fds[oflag]);
>  	if (oflag == O_RDWR) {
> -		__nfs4_file_get_access(fp, O_RDONLY);
> -		__nfs4_file_get_access(fp, O_WRONLY);
> +		atomic_inc(&fp->fi_access[O_RDONLY]);
> +		atomic_inc(&fp->fi_access[O_WRONLY]);
>  	} else
> -		__nfs4_file_get_access(fp, oflag);
> +		atomic_inc(&fp->fi_access[oflag]);
>  }
>  
>  static void nfs4_file_put_fd(struct nfs4_file *fp, int oflag)
> -- 
> 1.8.1.4
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 280acef..1cb6211 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -282,19 +282,14 @@  static unsigned int file_hashval(struct inode *ino)
 
 static struct hlist_head file_hashtbl[FILE_HASH_SIZE];
 
-static void __nfs4_file_get_access(struct nfs4_file *fp, int oflag)
-{
-	WARN_ON_ONCE(!(fp->fi_fds[oflag] || fp->fi_fds[O_RDWR]));
-	atomic_inc(&fp->fi_access[oflag]);
-}
-
 static void nfs4_file_get_access(struct nfs4_file *fp, int oflag)
 {
+	WARN_ON_ONCE(!fp->fi_fds[oflag]);
 	if (oflag == O_RDWR) {
-		__nfs4_file_get_access(fp, O_RDONLY);
-		__nfs4_file_get_access(fp, O_WRONLY);
+		atomic_inc(&fp->fi_access[O_RDONLY]);
+		atomic_inc(&fp->fi_access[O_WRONLY]);
 	} else
-		__nfs4_file_get_access(fp, oflag);
+		atomic_inc(&fp->fi_access[oflag]);
 }
 
 static void nfs4_file_put_fd(struct nfs4_file *fp, int oflag)