[PATCH] md/raid10: optimize read_balance() for "far offset" arrays

If @conf->far_offset > 0, there is only 1 stripe so that we can treat
the array same as 'near' arrays.

Signed-off-by: Namhyung Kim
---
drivers/md/raid10.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 6e846688962f..fc56bdd8c3fb 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -531,7 +531,7 @@ retry:
break;

/* for far > 1 always use the lowest address */
- if (conf->far_copies > 1)
+ if (conf->far_copies > 1 && conf->far_offset == 0)
new_distance = r10_bio->devs[slot].addr;
else
new_distance = abs(r10_bio->devs[slot].addr -
--
1.7.5.2

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