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| author | Boaz Harrosh <bharrosh@panasas.com> | 2011-09-28 13:18:45 +0300 |
|---|---|---|
| committer | Boaz Harrosh <bharrosh@panasas.com> | 2011-10-14 18:54:41 +0200 |
| commit | 5a51c0c7e9a913649aa65d8233470682bcbb7694 (patch) | |
| tree | 4ed43b3a2f9fade227e098771a5bed66f6a71dc4 /include | |
| parent | 3bd9856857339d7ee8c4ad50030583f1b9415c39 (diff) | |
| download | linux-5a51c0c7e9a913649aa65d8233470682bcbb7694.tar.bz2 | |
ore/exofs: Define new ore_verify_layout
All users of the ore will need to check if current code
supports the given layout. For example RAID5/6 is not
currently supported.
So move all the checks from exofs/super.c to a new
ore_verify_layout() to be used by ore users.
Note that any new layout should be passed through the
ore_verify_layout() because the ore engine will prepare
and verify some internal members of ore_layout, and
assumes it's called.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/scsi/osd_ore.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/scsi/osd_ore.h b/include/scsi/osd_ore.h index 492b70d43bb6..716dbeae8cd2 100644 --- a/include/scsi/osd_ore.h +++ b/include/scsi/osd_ore.h @@ -42,6 +42,13 @@ struct ore_layout { unsigned group_width; u64 group_depth; unsigned group_count; + + /* Cached often needed calculations filled in by + * ore_verify_layout + */ + unsigned long max_io_length; /* Max length that should be passed to + * ore_get_rw_state + */ }; struct ore_dev { @@ -138,6 +145,7 @@ static inline unsigned ore_io_state_size(unsigned numdevs) } /* ore.c */ +int ore_verify_layout(unsigned total_comps, struct ore_layout *layout); int ore_get_rw_state(struct ore_layout *layout, struct ore_components *comps, bool is_reading, u64 offset, u64 length, struct ore_io_state **ios); |