diff mbox

xfs_attr_leaf: use swap macro in xfs_attr3_leaf_rebalance

Message ID 20180709161247.GA4746@embeddedor.com (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Gustavo A. R. Silva July 9, 2018, 4:12 p.m. UTC
Make use of the swap macro and remove some unnecessary variables.
This makes the code easier to read and maintain. Also, reduces the
stack usage.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 fs/xfs/libxfs/xfs_attr_leaf.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

Comments

Darrick J. Wong July 11, 2018, 5:44 p.m. UTC | #1
On Mon, Jul 09, 2018 at 11:12:47AM -0500, Gustavo A. R. Silva wrote:
> Make use of the swap macro and remove some unnecessary variables.
> This makes the code easier to read and maintain. Also, reduces the
> stack usage.
> 
> This code was detected with the help of Coccinelle.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

Looks ok, will test...
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
>  fs/xfs/libxfs/xfs_attr_leaf.c | 13 +++----------
>  1 file changed, 3 insertions(+), 10 deletions(-)
> 
> diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
> index 76e9004..ec0bf96 100644
> --- a/fs/xfs/libxfs/xfs_attr_leaf.c
> +++ b/fs/xfs/libxfs/xfs_attr_leaf.c
> @@ -1570,17 +1570,10 @@ xfs_attr3_leaf_rebalance(
>  	 */
>  	swap = 0;
>  	if (xfs_attr3_leaf_order(blk1->bp, &ichdr1, blk2->bp, &ichdr2)) {
> -		struct xfs_da_state_blk	*tmp_blk;
> -		struct xfs_attr3_icleaf_hdr tmp_ichdr;
> +		swap(blk1, blk2);
>  
> -		tmp_blk = blk1;
> -		blk1 = blk2;
> -		blk2 = tmp_blk;
> -
> -		/* struct copies to swap them rather than reconverting */
> -		tmp_ichdr = ichdr1;
> -		ichdr1 = ichdr2;
> -		ichdr2 = tmp_ichdr;
> +		/* swap structures rather than reconverting them */
> +		swap(ichdr1, ichdr2);
>  
>  		leaf1 = blk1->bp->b_addr;
>  		leaf2 = blk2->bp->b_addr;
> -- 
> 2.7.4
> 
> --
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diff mbox

Patch

diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
index 76e9004..ec0bf96 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.c
+++ b/fs/xfs/libxfs/xfs_attr_leaf.c
@@ -1570,17 +1570,10 @@  xfs_attr3_leaf_rebalance(
 	 */
 	swap = 0;
 	if (xfs_attr3_leaf_order(blk1->bp, &ichdr1, blk2->bp, &ichdr2)) {
-		struct xfs_da_state_blk	*tmp_blk;
-		struct xfs_attr3_icleaf_hdr tmp_ichdr;
+		swap(blk1, blk2);
 
-		tmp_blk = blk1;
-		blk1 = blk2;
-		blk2 = tmp_blk;
-
-		/* struct copies to swap them rather than reconverting */
-		tmp_ichdr = ichdr1;
-		ichdr1 = ichdr2;
-		ichdr2 = tmp_ichdr;
+		/* swap structures rather than reconverting them */
+		swap(ichdr1, ichdr2);
 
 		leaf1 = blk1->bp->b_addr;
 		leaf2 = blk2->bp->b_addr;