runner: fix state_lock and cfgfs use #596
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The kernel can end up taking a configfs lock then call up to userspace, so we must not have a lock that is taken in this upcall and is taken when interacting with configfs. As reported by sherlockxiao: open-iscsi#595 this happens with the state_lock where during deletion the kernel will hold the state_lock, but some code paths will hold the state_lock while calling into configfs. This moves our configfs access out of the state_lock.
mikechristie
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The kernel can end up taking a configfs lock then call up to userspace,
so we must not have a lock that is taken in this upcall and is taken
when interacting with configfs. As reported by sherlockxiao:
#595
this happens with the state_lock where during deletion the kernel will
hold the state_lock, but some code paths will hold the state_lock while
calling into configfs.
This moves our configfs access out of the state_lock.