The dev field in struct dev_pagemap is only used to print dev_name in two places, which are at best nice to have. Just remove the field and thus the name in those two messages.
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| @@ -109,7 +109,6 @@ struct dev_pagemap { · 108 unmodified lines | ||
| 109 | 109 | struct percpu_ref *ref; |
| 110 | 110 | struct percpu_ref internal_ref; |
| 111 | 111 | struct completion done; |
| 112 | − struct device *dev; | |
| 113 | 112 | enum memory_type type; |
| 114 | 113 | unsigned int flags; |
| 115 | 114 | u64 pci_p2pdma_bus_offset; |