fstrace-avoid-double-glock-in-dentry-code-during-fstrace-20040719

fstrace-avoid-double-glock-in-dentry-code-during-fstrace-20040719

fstracing on a linux machine and trying to fs flush a file in the cache would trigger a hang on a machine with SMP kernel. fix it.

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fstracing on a linux machine and trying to fs flush a file in the cache would tr
igger a hang on a machine with SMP kernel. fix it.