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3 Commits

Author SHA1 Message Date
Qu Wenruo
05734124f2 btrfs-progs: Introduce wrapper to recover raid56 data 
Introduce a wrapper to recover raid56 data.

The logical is the same with kernel one, but with different interfaces,
since kernel ones cares the performance while in btrfs we don't care
that much.

And the interface is more caller friendly inside btrfs-progs.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2017-07-03 13:35:11 +02:00
Qu Wenruo
008bbd8842 btrfs-progs: raid56: Allow raid6 to recover data and P 
Copied from kernel lib/raid6/recov.c.

Minor modifications includes:
- Rename from raid6_datap_recov_intx() to raid5_recov_datap()
- Rename parameter from faila to dest1

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2017-07-03 13:35:11 +02:00
Qu Wenruo
9604ce49d6 btrfs-progs: raid56: Allow raid6 to recover 2 data stripes 
Copied from kernel lib/raid6/recov.c raid6_2data_recov_intx1() function.
With the following modification:
- Rename to raid6_recov_data2() for shorter name
- s/kfree/free/g modification

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2017-07-03 13:35:11 +02:00