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H A Dtarget_core_user.c8b084d9d Wed Mar 24 14:57:54 CDT 2021 Bodo Stroesser <bostroesser@gmail.com> scsi: target: tcmu: Prepare for PAGE_SIZE != DATA_BLOCK_SIZE

Rename some variables and definitions as a first preparation for
DATA_BLOCK_SIZE != PAGE_SIZE and add the new DATA_PAGES_PER_BLK definition
containing the number of pages per data block.

Rename tcmu_try_get_block_page() to tcmu_try_get_data_page(). Keep name
tcmu_get_block_page() since it will go away in a following commit when
there is only one caller left. Subsequent commits will then add full
support for DATA_PAGES_PER_BLK != 1, which also means DATA_BLOCK_SIZE =
DATA_PAGES_PER_BLK * PAGE_SIZE

Link: https://lore.kernel.org/r/20210324195758.2021-3-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>