NeilBrown 4254376914 [PATCH] md: Don't write dirty/clean update to spares - leave them alone ... - record the 'event' count on each individual device (they might sometimes be slightly different now) - add a new value for 'sb_dirty': '3' means that the super block only needs to be updated to record a clean<->dirty transition. - Prefer odd event numbers for dirty states and even numbers for clean states - Using all the above, don't update the superblock on a spare device if the update is just doing a clean-dirty transition. To accomodate this, a transition from dirty back to clean might now decrement the events counter if nothing else has changed. The net effect of this is that spare drives will not see any IO requests during normal running of the array, so they can go to sleep if that is what they want to do. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-06-26 09:58:39 -07:00
..
bitmap.h	[PATCH] md/bitmap: change md/bitmap file handling to use bmap to file blocks	2006-06-26 09:58:38 -07:00
linear.h	[PATCH] md: allow a linear array to have drives added while active	2006-06-26 09:58:37 -07:00
md_k.h	[PATCH] md: Don't write dirty/clean update to spares - leave them alone	2006-06-26 09:58:39 -07:00
md_p.h	[PATCH] md: allow checkpoint of recovery with version-1 superblock	2006-06-26 09:58:37 -07:00
md_u.h
md.h	[PATCH] md: make md_print_devices() static	2006-06-26 09:58:37 -07:00
multipath.h
raid0.h
raid1.h
raid5.h	[PATCH] md: merge raid5 and raid6 code	2006-06-26 09:58:37 -07:00
raid10.h	[PATCH] md: support stripe/offset mode in raid10	2006-06-26 09:58:37 -07:00
xor.h