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| author | Dan Williams <dan.j.williams@intel.com> | 2007-01-02 13:52:31 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2007-07-13 08:06:17 -0700 |
| commit | b5e98d65d34a1c11a2135ea8a9b2619dbc7216c8 (patch) | |
| tree | bf88aad375bb0cbf6c346ec912c06c2607850b21 /include/linux/raid | |
| parent | e89f89629b5de76e504d1be75c82c4a6b2419583 (diff) | |
| download | blackbird-op-linux-b5e98d65d34a1c11a2135ea8a9b2619dbc7216c8.tar.gz blackbird-op-linux-b5e98d65d34a1c11a2135ea8a9b2619dbc7216c8.zip | |
md: handle_stripe5 - add request/completion logic for async read ops
When a read bio is attached to the stripe and the corresponding block is
marked R5_UPTODATE, then a read (biofill) operation is scheduled to copy
the data from the stripe cache to the bio buffer. handle_stripe flags the
blocks to be operated on with the R5_Wantfill flag. If new read requests
arrive while raid5_run_ops is running they will not be handled until
handle_stripe is scheduled to run again.
Changelog:
* cleanup to_read and to_fill accounting
* do not fail reads that have reached the cache
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
Diffstat (limited to 'include/linux/raid')
| -rw-r--r-- | include/linux/raid/raid5.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h index 2293015de1d5..93678f57ccbe 100644 --- a/include/linux/raid/raid5.h +++ b/include/linux/raid/raid5.h @@ -200,7 +200,7 @@ struct stripe_head { struct stripe_head_state { int syncing, expanding, expanded; int locked, uptodate, to_read, to_write, failed, written; - int compute, req_compute, non_overwrite; + int to_fill, compute, req_compute, non_overwrite; int failed_num; }; |
