tree 406d8eb49a99834266b397656820d9430faca3f2
parent 16d9cfab930bb6f4946cff8ba7429701fd15b414
author NeilBrown <neilb@suse.de> 1412031185 +1000
committer NeilBrown <neilb@suse.de> 1424824726 +1100

md: mark some attributes as pre-alloc

Since __ATTR_PREALLOC was introduced in v3.19-rc1~78^2~18
it can now be used by md.

This ensure that writing to these sysfs attributes will never
block due to a memory allocation.
Such blocking could become a deadlock if mdmon is trying to
reconfigure an array after a failure prior to re-enabling writes.

Signed-off-by: NeilBrown <neilb@suse.de>