[RHEL 5]A panic happens because d_delete() and d_invalidate() can operate the same dentry->d_flags at the same time

Solution Verified - Updated -

Issue

  • If we delete files and get files statistics concurrently, a system may work incorrectly (Ex. a panic happens).
  • For instance, there is a conflict between d_delete() and d_invalidate(). These two function calls can operate same dentry->d_flags at the same time.

Environment

  • Red Hat Enterprise Linux 5 Update 2, 3, and 4
  • All architectures

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