[PATCH] md/raid10: optimize read_balance() for 'far offset' arrays
From: Namhyung Kim <hidden>
Date: 2011-06-08 07:57:18
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
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 <redacted> --- 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