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10d9120c44
The type represents byte offset in the vm_object_t data space, which does not span negative offsets in FreeBSD VM. The change matches byte offset signess with the unsignedness of the vm_pindex_t which represents the type of the page indexes in the objects. This allows to remove the UOFF_TO_IDX() macro which was used when we have to forcibly interpret the type as unsigned anyway. Also it fixes a lot of implicit bugs in the device drivers d_mmap methods. Reviewed by: alc, markj (previous version) Tested by: pho MFC after: 2 weeks Sponsored by: The FreeBSD Foundation |
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