diff options
| author | NeilBrown <neilb@suse.de> | 2013-04-24 11:42:44 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2013-04-30 14:49:32 +1000 |
| commit | 486adf72ccc0c235754923d47a2270c5dcb0c98b (patch) | |
| tree | c90d17b5b5e776da04d6a8b106a4ff3890992f3c | |
| parent | 0fea7ed82b1edf384735a2b535368f54a8584c3a (diff) | |
md: bad block list should default to disabled.
Maintenance of a bad-block-list currently defaults to 'enabled'
and is then disabled when it cannot be supported.
This is backwards and causes problem for dm-raid which didn't know
to disable it.
So fix the defaults, and only enabled for v1.x metadata which
explicitly has bad blocks enabled.
The problem with dm-raid has been present since badblock support was
added in v3.1, so this patch is suitable for any -stable from 3.1
onwards.
Cc: stable@vger.kernel.org (3.1+)
Reported-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
| -rw-r--r-- | drivers/md/md.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 0df1b9a3d48..4c74424c78b 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1567,8 +1567,8 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_ sector, count, 1) == 0) return -EINVAL; } - } else if (sb->bblog_offset == 0) - rdev->badblocks.shift = -1; + } else if (sb->bblog_offset != 0) + rdev->badblocks.shift = 0; if (!refdev) { ret = 1; @@ -3227,7 +3227,7 @@ int md_rdev_init(struct md_rdev *rdev) * be used - I wonder if that matters */ rdev->badblocks.count = 0; - rdev->badblocks.shift = 0; + rdev->badblocks.shift = -1; /* disabled until explicitly enabled */ rdev->badblocks.page = kmalloc(PAGE_SIZE, GFP_KERNEL); seqlock_init(&rdev->badblocks.lock); if (rdev->badblocks.page == NULL) @@ -3299,9 +3299,6 @@ static struct md_rdev *md_import_device(dev_t newdev, int super_format, int supe goto abort_free; } } - if (super_format == -1) - /* hot-add for 0.90, or non-persistent: so no badblocks */ - rdev->badblocks.shift = -1; return rdev; |