linux-kernel - Re: [lustre-devel] [PATCH 1/2] Fixed signedness check

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Date:   Fri, 13 Jan 2017 01:17:39 +0000
From:   "Dilger, Andreas" <andreas.dilger@...el.com>
To:     "Guillermo O. Freschi" <kedrot@...il.com>
CC:     "Drokin, Oleg" <oleg.drokin@...el.com>,
        "lustre-devel@...ts.lustre.org" <lustre-devel@...ts.lustre.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [lustre-devel] [PATCH 1/2] Fixed signedness check

On Dec 26, 2016, at 08:43, Guillermo O. Freschi <kedrot@...il.com> wrote:
> 
> Was `unsigned int`, but `enum`s are signed.

Interesting that GCC didn't complain that the itree_overlap_cb() function
signature didn't match the argument prototype for interval_search():

  typedef enum interval_iter (*interval_callback_t)(struct interval_node *node,
                                                    void *args);

In the end it is a somewhat cosmetic fix, because the only enum values
(1, 2) were unsigned, but good to be consistent.  Thanks for the fix.

> Signed-off-by: Guillermo O. Freschi <kedrot@...il.com>

Reviewed-by: Andreas Dilger <andreas.dilger@...el.com>

> ---
> drivers/staging/lustre/lustre/ldlm/ldlm_lock.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
> index a4a291acb659..f4cbc89b4f24 100644
> --- a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
> +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
> @@ -1148,7 +1148,7 @@ static int lock_matches(struct ldlm_lock *lock, struct lock_match_data *data)
> 	return INTERVAL_ITER_STOP;
> }
> 
> -static unsigned int itree_overlap_cb(struct interval_node *in, void *args)
> +static enum interval_iter itree_overlap_cb(struct interval_node *in, void *args)
> {
> 	struct ldlm_interval *node = to_ldlm_interval(in);
> 	struct lock_match_data *data = args;
> -- 
> 2.11.0
> 
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