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xfs: use swap macro in xfs_dir2_leafn_rebalance 

Make use of the swap macro and remove unnecessary variable *tmp*. This
makes the code easier to read and maintain. Also, slightly refactor some
code.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Gustavo A. R. Silva 2018-07-17 14:25:01 -07:00 committed by Darrick J. Wong
parent 897992b7e3
commit e4e542a683
1 changed files with 7 additions and 10 deletions
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17
fs/xfs/libxfs/xfs_dir2_node.c
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@ -1012,7 +1012,7 @@ xfs_dir2_leafn_rebalance(
int oldstale; /* old count of stale leaves */
#endif
int oldsum; /* old total leaf count */
int swap; /* swapped leaf blocks */
int swap_blocks; /* swapped leaf blocks */
struct xfs_dir2_leaf_entry *ents1;
struct xfs_dir2_leaf_entry *ents2;
struct xfs_dir3_icleaf_hdr hdr1;
@ -1023,13 +1023,10 @@ xfs_dir2_leafn_rebalance(
/*
* If the block order is wrong, swap the arguments.
*/
if ((swap = xfs_dir2_leafn_order(dp, blk1->bp, blk2->bp))) {
xfs_da_state_blk_t *tmp; /* temp for block swap */
swap_blocks = xfs_dir2_leafn_order(dp, blk1->bp, blk2->bp);
if (swap_blocks)
swap(blk1, blk2);
tmp = blk1;
blk1 = blk2;
blk2 = tmp;
}
leaf1 = blk1->bp->b_addr;
leaf2 = blk2->bp->b_addr;
dp->d_ops->leaf_hdr_from_disk(&hdr1, leaf1);
@ -1093,11 +1090,11 @@ xfs_dir2_leafn_rebalance(
* Mark whether we're inserting into the old or new leaf.
*/
if (hdr1.count < hdr2.count)
state->inleaf = swap;
state->inleaf = swap_blocks;
else if (hdr1.count > hdr2.count)
state->inleaf = !swap;
state->inleaf = !swap_blocks;
else
state->inleaf = swap ^ (blk1->index <= hdr1.count);
state->inleaf = swap_blocks ^ (blk1->index <= hdr1.count);
/*
* Adjust the expected index for insertion.
*/