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| author | Dan Williams <dan.j.williams@intel.com> | 2008-04-30 00:52:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:33 -0700 |
| commit | 11e2ede0228ee0f81ccacd15894908c3bf241f73 (patch) | |
| tree | 78bf7c8e2762d5dc07f2b9acb92ef5804ac40f38 /drivers/md | |
| parent | 242b363e2207d14125f52a6701cfda7376a2a2fc (diff) | |
| download | linux-11e2ede0228ee0f81ccacd15894908c3bf241f73.tar.gz | |
md: prevent duplicates in bind_rdev_to_array
Found when trying to reassemble an active externally managed array. Without this check we hit the more noisy "sysfs duplicate" warning in the later call to kobject_add. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/md.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 75a3f483522d..bec00b201a73 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1370,6 +1370,11 @@ static int bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev) MD_BUG(); return -EINVAL; } + + /* prevent duplicates */ + if (find_rdev(mddev, rdev->bdev->bd_dev)) + return -EEXIST; + /* make sure rdev->size exceeds mddev->size */ if (rdev->size && (mddev->size == 0 || rdev->size < mddev->size)) { if (mddev->pers) { |