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| author | Dan Williams <dan.j.williams@intel.com> | 2007-07-09 22:56:43 +0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2007-07-13 19:06:15 +0400 |
| commit | a445685647e825c713175d180ffc8dd54d90589b (patch) | |
| tree | d2db5674e51d33162e1e5993b6e6680ec534e2df /drivers/acpi/button.c | |
| parent | 9bc89cd82d6f88fb0ca39b30445c329a430fd66b (diff) | |
| download | linux-a445685647e825c713175d180ffc8dd54d90589b.tar.xz | |
raid5: refactor handle_stripe5 and handle_stripe6 (v3)
handle_stripe5 and handle_stripe6 have very deep logic paths handling the
various states of a stripe_head. By introducing the 'stripe_head_state'
and 'r6_state' objects, large portions of the logic can be moved to
sub-routines.
'struct stripe_head_state' consumes all of the automatic variables that previously
stood alone in handle_stripe5,6. 'struct r6_state' contains the handle_stripe6
specific variables like p_failed and q_failed.
One of the nice side effects of the 'stripe_head_state' change is that it
allows for further reductions in code duplication between raid5 and raid6.
The following new routines are shared between raid5 and raid6:
handle_completed_write_requests
handle_requests_to_failed_array
handle_stripe_expansion
Changes:
* v2: fixed 'conf->raid_disk-1' for the raid6 'handle_stripe_expansion' path
* v3: removed the unused 'dirty' field from struct stripe_head_state
* v3: coalesced open coded bi_end_io routines into return_io()
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/acpi/button.c')
0 files changed, 0 insertions, 0 deletions