[PATCH 0/10 v2] audit: Fix various races when tagging and untagging mounts

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Hello,

this is a second revision of the series that addresses problems I have
identified when trying to understand how exactly is kernel/audit_tree.c using
generic fsnotify framework. I hope I have understood all the interactions right
but careful review is certainly welcome.

The patches have been tested by a stress test I have written which mounts &
unmounts filesystems in the directory tree while adding and removing audit
rules for this tree in parallel and accessing the tree to generate events.
Still some real-world testing would be welcome.

Changes since v1:
* Split the last patch to ease review
* Rewrite test script so that it can be included in audit testsuite
* Some cleanups and improvements suggested by Amir

								Honza



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