Dan Williams 6bfe0b4990 md: support blocking writes to an array on device failure ... Allows a userspace metadata handler to take action upon detecting a device failure. Based on an original patch by Neil Brown. Changes: -added blocked_wait waitqueue to rdev -don't qualify Blocked with Faulty always let userspace block writes -added md_wait_for_blocked_rdev to wait for the block device to be clear, if userspace misses the notification another one is sent every 5 seconds -set MD_RECOVERY_NEEDED after clearing "blocked" -kill DoBlock flag, just test mddev->external Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-04-30 08:29:33 -07:00
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Kbuild	…
bitmap.h	md: reduce CPU wastage on idle md array with a write-intent bitmap	2008-03-04 16:35:17 -08:00
linear.h	…
md.h	md: support blocking writes to an array on device failure	2008-04-30 08:29:33 -07:00
md_k.h	md: support blocking writes to an array on device failure	2008-04-30 08:29:33 -07:00
md_p.h	…
md_u.h	…
multipath.h	…
raid0.h	…
raid1.h	…
raid5.h	md: introduce get_priority_stripe() to improve raid456 write performance	2008-04-28 08:58:42 -07:00
raid10.h	…
xor.h	async_tx: add the async_tx api	2007-07-13 08:06:14 -07:00