[LU-1290] ll_vfs_dq_transfer() is called when oo_guard is held

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.3.0
• Affects Version/s: Lustre 2.3.0
• Severity: 3
• Assignee: Niu Yawei (Inactive)
• Reporter: Niu Yawei (Inactive)

Description

osd_attr_set() > cfs_spin_lock(&obj>oo_guard) > osd_inode_setattr() -> ll_vfs_dq_transfer() -> down_write(&sb_dqopt(inode>i_sb)->dqptr_sem);