xfs: Improve error handling in xfs_mru_cache_create()

[PATCH] xfs: Improve error handling in xfs_mru_cache_create()

Posted by Markus Elfring 4 months ago

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 10 Jun 2025 14:50:07 +0200

Simplify error handling in this function implementation.

* Delete unnecessary pointer checks and variable assignments.

* Omit a redundant function call.


This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 fs/xfs/xfs_mru_cache.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
index 08443ceec329..2ed679a52e41 100644
--- a/fs/xfs/xfs_mru_cache.c
+++ b/fs/xfs/xfs_mru_cache.c
@@ -320,7 +320,7 @@ xfs_mru_cache_create(
 	xfs_mru_cache_free_func_t free_func)
 {
 	struct xfs_mru_cache	*mru = NULL;
-	int			err = 0, grp;
+	int			grp;
 	unsigned int		grp_time;
 
 	if (mrup)
@@ -341,8 +341,8 @@ xfs_mru_cache_create(
 	mru->lists = kzalloc(mru->grp_count * sizeof(*mru->lists),
 				GFP_KERNEL | __GFP_NOFAIL);
 	if (!mru->lists) {
-		err = -ENOMEM;
-		goto exit;
+		kfree(mru);
+		return -ENOMEM;
 	}
 
 	for (grp = 0; grp < mru->grp_count; grp++)
@@ -361,14 +361,7 @@ xfs_mru_cache_create(
 	mru->free_func = free_func;
 	mru->data = data;
 	*mrup = mru;
-
-exit:
-	if (err && mru && mru->lists)
-		kfree(mru->lists);
-	if (err && mru)
-		kfree(mru);
-
-	return err;
+	return 0;
 }
 
 /*
-- 
2.49.0

Re: [PATCH] xfs: Improve error handling in xfs_mru_cache_create()

Posted by Carlos Maiolino 3 months, 3 weeks ago

On Tue, 10 Jun 2025 15:00:27 +0200, Markus Elfring wrote:
> Simplify error handling in this function implementation.
> 
> * Delete unnecessary pointer checks and variable assignments.
> 
> * Omit a redundant function call.
> 
> 
> [...]

Applied to for-next, thanks!

[1/1] xfs: Improve error handling in xfs_mru_cache_create()
      commit: 19fa6e493a933c095f164230d3393d504216e052

Best regards,
-- 
Carlos Maiolino <cem@kernel.org>

Re: [PATCH] xfs: Improve error handling in xfs_mru_cache_create()

Posted by Darrick J. Wong 4 months ago

On Tue, Jun 10, 2025 at 03:00:27PM +0200, Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Tue, 10 Jun 2025 14:50:07 +0200
> 
> Simplify error handling in this function implementation.
> 
> * Delete unnecessary pointer checks and variable assignments.
> 
> * Omit a redundant function call.
> 
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>

Looks ok,
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>

--D

> ---
>  fs/xfs/xfs_mru_cache.c | 15 ++++-----------
>  1 file changed, 4 insertions(+), 11 deletions(-)
> 
> diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
> index 08443ceec329..2ed679a52e41 100644
> --- a/fs/xfs/xfs_mru_cache.c
> +++ b/fs/xfs/xfs_mru_cache.c
> @@ -320,7 +320,7 @@ xfs_mru_cache_create(
>  	xfs_mru_cache_free_func_t free_func)
>  {
>  	struct xfs_mru_cache	*mru = NULL;
> -	int			err = 0, grp;
> +	int			grp;
>  	unsigned int		grp_time;
>  
>  	if (mrup)
> @@ -341,8 +341,8 @@ xfs_mru_cache_create(
>  	mru->lists = kzalloc(mru->grp_count * sizeof(*mru->lists),
>  				GFP_KERNEL | __GFP_NOFAIL);
>  	if (!mru->lists) {
> -		err = -ENOMEM;
> -		goto exit;
> +		kfree(mru);
> +		return -ENOMEM;
>  	}
>  
>  	for (grp = 0; grp < mru->grp_count; grp++)
> @@ -361,14 +361,7 @@ xfs_mru_cache_create(
>  	mru->free_func = free_func;
>  	mru->data = data;
>  	*mrup = mru;
> -
> -exit:
> -	if (err && mru && mru->lists)
> -		kfree(mru->lists);
> -	if (err && mru)
> -		kfree(mru);
> -
> -	return err;
> +	return 0;
>  }
>  
>  /*
> -- 
> 2.49.0
> 
>