From e555190d82c0f58e825e3cbd9e6ebe2e7ac713bd Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 31 Mar 2010 11:21:44 +1100 Subject: [PATCH] md/raid1: delay reads that could overtake behind-writes. When a raid1 array is configured to support write-behind on some devices, it normally only reads from other devices. If all devices are write-behind (because the rest have failed) it is possible for a read request to be serviced before a behind-write request, which would appear as data corruption. So when forced to read from a WriteMostly device, wait for any write-behind to complete, and don't start any more behind-writes. Signed-off-by: NeilBrown --- Reading git-format-patch failed