tcmu: fix page addr in tcmu_flush_dcache_range

The page addr should be update.

Signed-off-by: tangwenji <tang.wenji@zte.com.cn>
Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index a415d87f22d2..6bcaa8b5684c 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -455,12 +455,13 @@ static struct tcmu_cmd *tcmu_alloc_cmd(struct se_cmd *se_cmd)
 static inline void tcmu_flush_dcache_range(void *vaddr, size_t size)
 {
         unsigned long offset = offset_in_page(vaddr);
+        void *start = vaddr - offset;
 
         size = round_up(size+offset, PAGE_SIZE);
-        vaddr -= offset;
 
         while (size) {
-                flush_dcache_page(virt_to_page(vaddr));
+                flush_dcache_page(virt_to_page(start));
+                start += PAGE_SIZE;
                 size -= PAGE_SIZE;
         }
 }