diff options
| -rw-r--r-- | drivers/md/linear.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/md/linear.c b/drivers/md/linear.c index 529a3d37e3f..9b02a73fbc6 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -27,14 +27,26 @@ */ static inline dev_info_t *which_dev(mddev_t *mddev, sector_t sector) { - dev_info_t *hash; + int lo, mid, hi; linear_conf_t *conf = mddev->private; - hash = conf->disks; + lo = 0; + hi = mddev->raid_disks - 1; - while (sector >= hash->end_sector) - hash++; - return hash; + /* + * Binary Search + */ + + while (hi > lo) { + + mid = (hi + lo) / 2; + if (sector < conf->disks[mid].end_sector) + hi = mid; + else + lo = mid + 1; + } + + return conf->disks + lo; } /** |