user/sven/linux.git/include/linux/raid, branch v3.4.40

md: Use existed macros instead of numbers

2012-03-13T00:21:23Z

Signed-off-by: majianpeng Signed-off-by: NeilBrown

md: create externally visible flags for supporting hot-replace.

2011-12-22T23:17:51Z

hot-replace is a feature being added to md which will allow a device to be replaced without removing it from the array first. With hot-replace a spare can be activated and recovery can start while the original device is still in place, thus allowing a transition from an unreliable device to a reliable device without leaving the array degraded during the transition. It can also be use when the original device is still reliable but it not wanted for some reason. This will eventually be supported in RAID4/5/6 and RAID10. This patch adds a super-block flag to distinguish the replacement device. If an old kernel sees this flag it will reject the device. It also adds two per-device flags which are viewable and settable via sysfs. "want_replacement" can be set to request that a device be replaced. "replacement" is set to show that this device is replacing another device. The "rd%d" links in /sys/block/mdXx/md only apply to the original device, not the replacement. We currently don't make links for the replacement - there doesn't seem to be a need. Signed-off-by: NeilBrown

md: Fix userspace free_pages() macro

2011-12-22T23:17:51Z

While using etags to find free_pages(), I stumbled across this debug definition of free_pages() that is to be used while debugging some raid code in userspace. The __get_free_pages() allocates the correct size, but the free_pages() does not match. free_pages(), like __get_free_pages(), takes an order and not a size. Acked-by: H. Peter Anvin Signed-off-by: Steven Rostedt Signed-off-by: NeilBrown

md: load/store badblock list from v1.x metadata

2011-07-28T01:31:47Z

Space must have been allocated when array was created. A feature flag is set when the badblock list is non-empty, to ensure old kernels don't load and trust the whole device. We only update the on-disk badblocklist when it has changed. If the badblocklist (or other metadata) is stored on a bad block, we don't cope very well. If metadata has no room for bad block, flag bad-blocks as disabled, and do the same for 0.90 metadata. Signed-off-by: NeilBrown

Fix common misspellings

2011-03-31T14:26:23Z

Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi

Make lib/raid6/test build correctly.

2010-08-11T20:38:24Z

Some bit-rot needs to be cleaned out. Signed-off-by: NeilBrown

md: remove sparse warning:symbol XXX was not declared.

2009-12-14T01:49:47Z

Signed-off-by: NeilBrown

md: fix some comments.

2009-06-17T22:46:47Z

1/ Raid5 has learned to take over also raid4 and raid6 arrays. 2/ new_chunk in mdp_superblock_1 is in sectors, not bytes. Signed-off-by: NeilBrown

md/raid6: move raid6 data processing to raid6_pq.ko

2009-03-31T04:09:39Z

Move the raid6 data processing routines into a standalone module (raid6_pq) to prepare them to be called from async_tx wrappers and other non-md drivers/modules. This precludes a circular dependency of raid456 needing the async modules for data processing while those modules in turn depend on raid456 for the base level synchronous raid6 routines. To support this move: 1/ The exportable definitions in raid6.h move to include/linux/raid/pq.h 2/ The raid6_call, recovery calls, and table symbols are exported 3/ Extra #ifdef __KERNEL__ statements to enable the userspace raid6test to compile Signed-off-by: Dan Williams Signed-off-by: NeilBrown

md: move md_k.h from include/linux/raid/ to drivers/md/

2009-03-31T03:33:13Z

It really is nicer to keep related code together.. Signed-off-by: NeilBrown