[GIT PULL] MD update for 4.8-rc6

Hi Linus, A few bug fixes for MD. - Guoqing fixed a bug compiling md-cluster in kernel - I fixed a potential deadlock in raid5-cache superblock write, a hang in raid5 reshape resume and a race condition introduced in -rc4 Please pull! Thanks, Shaohua The following changes since commit 86a16798

[GIT PULL] MD update for 4.8-rc4

Hi, please pull MD update for 4.8-rc4. This update includes several bug fixes: - Alexey Obitotskiy fixes hang for faulty raid5 array with external management - Song Liu fixes two raid5 journal realted bugs - Tomasz Majchrzak fixes a bad block recording issue and an accounting issue for raid10 - Zh

[GIT PULL] MD update for 4.8

Hi, Please pull MD update for 4.8. The patches are based on 4.7 rc initially, I merged them to lastest upstream to fix merge conflict against block layer changes: - A bunch of patches from Neil Brown to fix RCU usage - Two performance improvement patches from Tomasz Majchrzak - Alexey Obitotskiy f