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Alexander Motin
d06a1d9ac3
Currently, spa_dspace (base to calculate dataset AVAIL) only includes the normal allocation class capacity, but dd_used_bytes tracks space allocated across all classes. Since we don't want to report free space of other classes as available (we can't promise new allocations will be able to use it), report only allocated space, similar to how we report space saved by dedup and block cloning. Since we need deflated space here, make allocation classes track deflated allocated space also. While here, make mc_deferred also deflated, matching its use contexts. Also while there, use atomic_load() to read the allocation class stats. Reviewed-by: Rob Norris <robn@despairlabs.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com> Closes #18190 Closes #18222