target: Make spc_get_write_same_sectors return sector_t

We already expect TFO->get_blocks() to return sector_t for zero value case
when doing WRITE_SAME to the end of the backend device, so go ahead and return
sector_t from spc_get_write_same_sectors() to handle this case properly.

Also, update the single iblock_execute_write_same() caller of this code.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

2 files changed, 2 insertions, 2 deletions

diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 34f258b4d37f..b526d23dcd4f 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -481,7 +481,7 @@ iblock_execute_write_same(struct se_cmd *cmd)
         struct bio *bio;
         struct bio_list list;
         sector_t block_lba = cmd->t_task_lba;
-        unsigned int sectors = spc_get_write_same_sectors(cmd);
+        sector_t sectors = spc_get_write_same_sectors(cmd);
 
         sg = &cmd->t_data_sg[0];
 
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index 94fd004ea3fc..26a6d183ccb1 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -107,7 +107,7 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd)
         return 0;
 }
 
-int spc_get_write_same_sectors(struct se_cmd *cmd)
+sector_t spc_get_write_same_sectors(struct se_cmd *cmd)
 {
         u32 num_blocks;