kernel_samsung_sm7125

jenna

History

NeilBrown c0e485216d [PATCH] md: fix is_mddev_idle calculation now that disk/sector accounting happens when request completes md needs to monitor the rate of requests to its devices when doing resync/recovery so that it can back-off when there is non-resync IO. It does this by comparing resync IO, which it counts, with total IO which is taken from disk_stats. disk_stats were recently changed to account sectors when a request completes instead of when it is queued. This upsets md's calculations. We could do the sync_io accounting at the end of requests too, but that has problems. If an underlying device is an md array, the accounting will still be done when the request is submitted. This could be changed for some raid levels, but it cannot be changed for raid0 or linear without substantial code changes. So instead, we increase the error that is_mddev_idle allows, up to the maximum amount of resync IO that can be in flight at any time. The calculation is current fragile as each personality as different limits for in-flight resync. This should be fixed up. For now, this simple patch fixes the problem. Increasing the error margin decreases the sensitivity to non-resync IO. To partially compensate for this, the time to wait when non-resync IO is detected is increased so that less steady IO is required to keep the resync at bay. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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raid6test	[PATCH] RAID6 Altivec fix	20 years ago
Kconfig	…
Makefile	[PATCH] md: optimised resync using Bitmap based intent logging	20 years ago
bitmap.c	[PATCH] md: don't pass a NULL file* into ->prepare_write()	19 years ago
dm-bio-list.h	…
dm-bio-record.h	…
dm-crypt.c	[PATCH] Use sg_set_buf/sg_init_one where applicable	20 years ago
dm-emc.c	…
dm-exception-store.c	[PATCH] vfree and kfree cleanup in drivers/	20 years ago
dm-hw-handler.c	[PATCH] device-mapper: Some missing statics	20 years ago
dm-hw-handler.h	…
dm-io.c	[PATCH] gfp flags annotations - part 1	20 years ago
dm-io.h	…
dm-ioctl.c	[PATCH] device-mapper: Trigger an event when a table is deleted	20 years ago
dm-linear.c	…
dm-log.c	…
dm-log.h	…
dm-mpath.c	[PATCH] device-mapper: Fix queue_if_no_path initialisation	20 years ago
dm-mpath.h	…
dm-path-selector.c	[PATCH] device-mapper: Some missing statics	20 years ago
dm-path-selector.h	…
dm-raid1.c	[PATCH] gfp flags annotations - part 1	20 years ago
dm-round-robin.c	…
dm-snap.c	[PATCH] device-mapper snapshots: Handle origin extension	20 years ago
dm-snap.h	…
dm-stripe.c	…
dm-table.c	[PATCH] device-mapper: fix deadlocks in core (prep)	20 years ago
dm-target.c	…
dm-zero.c	[PATCH] device-mapper: Some missing statics	20 years ago
dm.c	[PATCH] kill bio->bi_set	20 years ago
dm.h	…
faulty.c	…
kcopyd.c	…
kcopyd.h	…
linear.c	[BLOCK] Unify the seperate read/write io stat fields into arrays	20 years ago
md.c	[PATCH] md: fix is_mddev_idle calculation now that disk/sector accounting happens when request completes	19 years ago
mktables.c	…
multipath.c	[PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field	19 years ago
raid0.c	[BLOCK] Unify the seperate read/write io stat fields into arrays	20 years ago
raid1.c	[PATCH] md: make manual repair work for raid1	19 years ago
raid5.c	[PATCH] md: fix some locking and module refcounting issues with md's use of sysfs	19 years ago
raid6.h	[PATCH] RAID6 Altivec fix	20 years ago
raid6algos.c	[PATCH] RAID6 Altivec fix	20 years ago
raid6altivec.uc	[PATCH] RAID6 Altivec fix	20 years ago
raid6int.uc	…
raid6main.c	[PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field	19 years ago
raid6mmx.c	…
raid6recov.c	…
raid6sse1.c	…
raid6sse2.c	…
raid6x86.h	…
raid10.c	[PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field	19 years ago
unroll.pl	…
xor.c	…