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| author | Dan Williams <dan.j.williams@intel.com> | 2009-10-19 14:05:12 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-10-19 23:34:46 -0700 |
| commit | da17bf4306fd3a52e938b121df82a7baa10eb282 (patch) | |
| tree | c5e5056287547e6674b63c690c911367e76f8d09 /crypto/krng.c | |
| parent | 030b07720be0f3bfada12ff6bfa3c61a91212f32 (diff) | |
| download | linux-da17bf4306fd3a52e938b121df82a7baa10eb282.tar.bz2 | |
async_tx: fix asynchronous raid6 recovery for ddf layouts
The raid6 recovery code currently requires special handling of the
4-disk and 5-disk recovery scenarios for the native layout. Quoting
from commit 0a82a623:
In these situations the default N-disk algorithm will present
0-source or 1-source operations to dma devices. To cover for
dma devices where the minimum source count is 2 we implement
4-disk and 5-disk handling in the recovery code.
The ddf layout presents disks=6 and disks=7 to the recovery code in
these situations. Instead of looking at the number of disks count the
number of non-zero sources in the list and call the special case code
when the number of non-failed sources is 0 or 1.
[neilb@suse.de: replace 'ddf' flag with counting good sources]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'crypto/krng.c')
0 files changed, 0 insertions, 0 deletions