btrfs: raid56: simplify sort_parity_stripes
Remove trivial comprator and open coded swap of two values.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index c93cafe..2d8ffef 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5353,31 +5353,19 @@ static int find_live_mirror(struct btrfs_fs_info *fs_info,
return preferred_mirror;
}
-static inline int parity_smaller(u64 a, u64 b)
-{
- return a > b;
-}
-
/* Bubble-sort the stripe set to put the parity/syndrome stripes last */
static void sort_parity_stripes(struct btrfs_bio *bbio, int num_stripes)
{
- struct btrfs_bio_stripe s;
int i;
- u64 l;
int again = 1;
while (again) {
again = 0;
for (i = 0; i < num_stripes - 1; i++) {
- if (parity_smaller(bbio->raid_map[i],
- bbio->raid_map[i+1])) {
- s = bbio->stripes[i];
- l = bbio->raid_map[i];
- bbio->stripes[i] = bbio->stripes[i+1];
- bbio->raid_map[i] = bbio->raid_map[i+1];
- bbio->stripes[i+1] = s;
- bbio->raid_map[i+1] = l;
-
+ /* Swap if parity is on a smaller index */
+ if (bbio->raid_map[i] > bbio->raid_map[i + 1]) {
+ swap(bbio->stripes[i], bbio->stripes[i + 1]);
+ swap(bbio->raid_map[i], bbio->raid_map[i + 1]);
again = 1;
}
}