[Ocfs2-devel] [PATCH] ocfs2: Fix 2 warning during ocfs2 make.

[Joel Becker]

On Thu, Mar 19, 2009 at 05:08:43AM +0800, Tao Ma wrote:
> fs/ocfs2/dir.c: In function ‘ocfs2_extend_dir’:
> fs/ocfs2/dir.c:2700: warning: ‘ret’ may be used uninitialized in this function
> 
> fs/ocfs2/suballoc.c: In function ‘ocfs2_get_suballoc_slot_bit’:
> fs/ocfs2/suballoc.c:2216: warning: comparison is always true due to limited range of data type
> 
> Signed-off-by: Tao Ma <tao.ma at oracle.com>

	Good catch.  Both are bugs, and both are correctly fixed.

Acked-by: Joel Becker <joel.becker at oracle.com>


> ---
>  fs/ocfs2/dir.c      |    2 +-
>  fs/ocfs2/suballoc.c |    2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
> index e71160c..eeac241 100644
> --- a/fs/ocfs2/dir.c
> +++ b/fs/ocfs2/dir.c
> @@ -2697,7 +2697,7 @@ static int ocfs2_dx_dir_index_block(struct inode *dir,
>  				    u32 *num_dx_entries,
>  				    struct buffer_head *dirent_bh)
>  {
> -	int ret, namelen, i;
> +	int ret = 0, namelen, i;
>  	char *de_buf, *limit;
>  	struct ocfs2_dir_entry *de;
>  	struct buffer_head *dx_leaf_bh;
> diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
> index b4ca591..eb21dbb 100644
> --- a/fs/ocfs2/suballoc.c
> +++ b/fs/ocfs2/suballoc.c
> @@ -2213,7 +2213,7 @@ static int ocfs2_get_suballoc_slot_bit(struct ocfs2_super *osb, u64 blkno,
>  		goto bail;
>  	}
>  
> -	if (le16_to_cpu(inode_fe->i_suballoc_slot) != OCFS2_INVALID_SLOT &&
> +	if (le16_to_cpu(inode_fe->i_suballoc_slot) != (u16)OCFS2_INVALID_SLOT &&
>  	    (u32)le16_to_cpu(inode_fe->i_suballoc_slot) > osb->max_slots - 1) {
>  		mlog(ML_ERROR, "inode %llu has invalid suballoc slot %u\n",
>  		     blkno, (u32)le16_to_cpu(inode_fe->i_suballoc_slot));
> -- 
> 1.6.2.rc2.16.gf474c
> 
> 
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-- 

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Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127