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| author | Dan Williams <dan.j.williams@intel.com> | 2007-07-09 11:56:43 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2007-07-13 08:06:15 -0700 |
| commit | a445685647e825c713175d180ffc8dd54d90589b (patch) | |
| tree | d2db5674e51d33162e1e5993b6e6680ec534e2df /block/genhd.c | |
| parent | 9bc89cd82d6f88fb0ca39b30445c329a430fd66b (diff) | |
| download | linux-a445685647e825c713175d180ffc8dd54d90589b.tar.gz | |
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 'block/genhd.c')
0 files changed, 0 insertions, 0 deletions