1 files changed, 34 insertions, 5 deletions

diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index ad9f014a086b..52c85f4f672d 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -76,6 +76,28 @@ static blk_qc_t pblk_make_rq(struct request_queue *q, struct bio *bio)
         return BLK_QC_T_NONE;
 }
 
+static size_t pblk_trans_map_size(struct pblk *pblk)
+{
+        int entry_size = 8;
+
+        if (pblk->ppaf_bitsize < 32)
+                entry_size = 4;
+
+        return entry_size * pblk->rl.nr_secs;
+}
+
+#ifdef CONFIG_NVM_DEBUG
+static u32 pblk_l2p_crc(struct pblk *pblk)
+{
+        size_t map_size;
+        u32 crc = ~(u32)0;
+
+        map_size = pblk_trans_map_size(pblk);
+        crc = crc32_le(crc, pblk->trans_map, map_size);
+        return crc;
+}
+#endif
+
 static void pblk_l2p_free(struct pblk *pblk)
 {
         vfree(pblk->trans_map);
@@ -85,12 +107,10 @@ static int pblk_l2p_init(struct pblk *pblk)
 {
         sector_t i;
         struct ppa_addr ppa;
-        int entry_size = 8;
-
-        if (pblk->ppaf_bitsize < 32)
-                entry_size = 4;
+        size_t map_size;
 
-        pblk->trans_map = vmalloc(entry_size * pblk->rl.nr_secs);
+        map_size = pblk_trans_map_size(pblk);
+        pblk->trans_map = vmalloc(map_size);
         if (!pblk->trans_map)
                 return -ENOMEM;
 
@@ -508,6 +528,10 @@ static int pblk_lines_configure(struct pblk *pblk, int flags)
                 }
         }
 
+#ifdef CONFIG_NVM_DEBUG
+        pr_info("pblk init: L2P CRC: %x\n", pblk_l2p_crc(pblk));
+#endif
+
         /* Free full lines directly as GC has not been started yet */
         pblk_gc_free_full_lines(pblk);
 
@@ -901,6 +925,11 @@ static void pblk_exit(void *private)
         down_write(&pblk_lock);
         pblk_gc_exit(pblk);
         pblk_tear_down(pblk);
+
+#ifdef CONFIG_NVM_DEBUG
+        pr_info("pblk exit: L2P CRC: %x\n", pblk_l2p_crc(pblk));
+#endif
+
         pblk_free(pblk);
         up_write(&pblk_lock);
 }