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Re: [PATCH] lightnvm: assume 64-bit lba numbers

On 04/19/2017 07:39 PM, Arnd Bergmann wrote:
The driver uses both u64 and sector_t to refer to offsets, and assigns between the
two. This causes one harmless warning when sector_t is 32-bit:

drivers/lightnvm/pblk-rb.c: In function 'pblk_rb_write_entry_gc':
include/linux/lightnvm.h:215:20: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
drivers/lightnvm/pblk-rb.c:324:22: note: in expansion of macro 'ADDR_EMPTY'

As the driver is already doing this inconsistently, changing the type
won't make it worse and is an easy way to avoid the warning.

Fixes: a4bd217b4326 ("lightnvm: physical block device (pblk) target")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
 drivers/lightnvm/pblk.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index c82120ce3be5..11ed7d83f572 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -119,7 +119,7 @@ struct pblk_w_ctx {
 	struct bio_list bios;		/* Original bios - used for completion
 					 * in REQ_FUA, REQ_FLUSH case
-	sector_t lba;			/* Logic addr. associated with entry */
+	u64 lba;			/* Logic addr. associated with entry */
 	struct ppa_addr ppa;		/* Physic addr. associated with entry */
 	int flags;			/* Write context flags */

Thanks Arnd. Jens, could you pick this up? Thank you