Fixes for 6.3-rc3:

 * Fix the new allocator tracepoints because git am mismerged the
   changes such that the trace_XXX got rebased to be in function YYY
   instead of XXX.
 * Ensure that the perag AGFL_RESET state is consistent with whatever
   we've just read off the disk.
 * Fix a bug where we used the wrong iext cursor during a write begin.
 * Fix a race in the percpu counters summation code where the summation
   failed to add in the values for any CPUs that were dying but not yet
   dead.  This fixes some minor discrepancies and incorrect assertions
   when running generic/650.
 * Add a few debugging assertions so that people (me) trying to port
   code to the new allocator functions don't mess up the caller
   requirements.
 * Relax some overly cautious lock ordering enforcement in the new
   allocator code, which means that file allocations will locklessly
   scan for the best space they can get before backing off to the
   traditional lock-and-really-get-it behavior.
 * Add tracepoints to make it easier to trace the xfs allocator
   behavior.
 * Actually test the dir/xattr hash algorithm to make sure it produces
   consistent results across all the platforms XFS supports.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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