diff options
| author | NeilBrown <neilb@suse.de> | 2013-04-24 11:42:44 +1000 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-05-13 15:02:29 +0100 |
| commit | b6e777b986dc9af7b0a28e8a32b80aec2296684a (patch) | |
| tree | 3453137fe80b0e340a05970822b8ab416b22a132 /drivers | |
| parent | 84c2c44393f9d054aa07e75e68743364f1ad7c2d (diff) | |
md: bad block list should default to disabled.
commit 486adf72ccc0c235754923d47a2270c5dcb0c98b upstream.
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.
Reported-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers')
| -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 1702133a91a..2d0544c9273 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1588,8 +1588,8 @@ 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; @@ -3063,7 +3063,7 @@ 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) @@ -3135,9 +3135,6 @@ 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; |