diff options
| author | Jeff Garzik <[email protected]> | 2005-11-29 03:50:33 -0500 |
|---|---|---|
| committer | Jeff Garzik <[email protected]> | 2005-11-29 03:50:33 -0500 |
| commit | 2226340eb8df9c42f9fca74582d08d5117fc0cec (patch) | |
| tree | c98370844715194600b79f886dbc391633f3e470 /drivers/md/raid10.c | |
| parent | 2e06cb5859fdaeba0529806eb1bf161ffd0db201 (diff) | |
| parent | 624f54be206adf970cd8eece16446b027913e533 (diff) | |
Merge branch 'master'
Diffstat (limited to 'drivers/md/raid10.c')
| -rw-r--r-- | drivers/md/raid10.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 867f06ae33d9..713dc9c2c730 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -552,7 +552,11 @@ static int read_balance(conf_t *conf, r10bio_t *r10_bio) !test_bit(In_sync, &rdev->flags)) continue; - if (!atomic_read(&rdev->nr_pending)) { + /* This optimisation is debatable, and completely destroys + * sequential read speed for 'far copies' arrays. So only + * keep it for 'near' arrays, and review those later. + */ + if (conf->near_copies > 1 && !atomic_read(&rdev->nr_pending)) { disk = ndisk; slot = nslot; break; |