Andriy Gapon ac99b25298 zfs: use atomic_load_64 to read atomic variable in dmu_object_alloc_impl ... As long as we support ZFS on 32-bit platforms we should do this for all 64-bit variables that are modified in a lockless fashion using atomic operations. Otherwise, there is a risk of a reading a torn value. Here is a rationale for why I am doing this in dmu_object_alloc_impl: - it's very recent code - the code deals with object IDs and a number of objects in a file system can overflow 32 bits - incorrect allocation of an object ID may result in hard to debug problems - fixing all plain reads of 64-bit atomic variables is not a trivial undertaking to do in one shot, so I chose to do it incrementally MFC after: 3 weeks X-MFC after: r353301, r353176		2019-10-08 11:27:48 +00:00
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opensolaris	zfs: use atomic_load_64 to read atomic variable in dmu_object_alloc_impl	2019-10-08 11:27:48 +00:00