diff options
| author | NeilBrown <neilb@suse.de> | 2006-03-27 04:18:12 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-27 11:45:02 -0500 |
| commit | b578d55fdd80140f657130abd85aebeb345755fb (patch) | |
| tree | 3737b88a25b3fb1e3347cd1c4c274336aee6a462 /include/linux | |
| parent | f67055780caac6a99f43834795c43acf99eba6a6 (diff) | |
[PATCH] md: Only checkpoint expansion progress occasionally
Instead of checkpointing at each stripe, only checkpoint when a new write
would overwrite uncheckpointed data. Block any write to the uncheckpointed
area. Arbitrarily checkpoint at least every 3Meg.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/raid/raid5.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h index abcdf0d0658a..914af667044f 100644 --- a/include/linux/raid/raid5.h +++ b/include/linux/raid/raid5.h | |||
| @@ -217,6 +217,9 @@ struct raid5_private_data { | |||
| 217 | 217 | ||
| 218 | /* used during an expand */ | 218 | /* used during an expand */ |
| 219 | sector_t expand_progress; /* MaxSector when no expand happening */ | 219 | sector_t expand_progress; /* MaxSector when no expand happening */ |
| 220 | sector_t expand_lo; /* from here up to expand_progress it out-of-bounds | ||
| 221 | * as we haven't flushed the metadata yet | ||
| 222 | */ | ||
| 220 | int previous_raid_disks; | 223 | int previous_raid_disks; |
| 221 | 224 | ||
| 222 | struct list_head handle_list; /* stripes needing handling */ | 225 | struct list_head handle_list; /* stripes needing handling */ |