From 3505d3a65c837cd0f89e9c5531b19fd68e65d801 Mon Sep 17 00:00:00 2001
From: Wojciech Malikowski <wojciech.malikowski@intel.com>
Date: Fri, 15 Nov 2019 04:55:58 -0500
Subject: [PATCH] lib/ftl: Set l2p table initial state with memset()

This patch improve FTL initialization time.
For 16TB volume it reduces init/restore time
by about 30 seconds.

Change-Id: I76463c5447b983eb9428c0317933d06c40b2974e
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/546
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Maciej Szczepaniak <maciej.szczepaniak@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
---
 lib/ftl/ftl_init.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/lib/ftl/ftl_init.c b/lib/ftl/ftl_init.c
index c56ec8949..f62eac025 100644
--- a/lib/ftl/ftl_init.c
+++ b/lib/ftl/ftl_init.c
@@ -555,7 +555,6 @@ static int
 ftl_dev_l2p_alloc(struct spdk_ftl_dev *dev)
 {
 	size_t addr_size;
-	uint64_t i;
 
 	if (dev->num_lbas == 0) {
 		SPDK_DEBUGLOG(SPDK_LOG_FTL_INIT, "Invalid l2p table size\n");
@@ -574,9 +573,7 @@ ftl_dev_l2p_alloc(struct spdk_ftl_dev *dev)
 		return -1;
 	}
 
-	for (i = 0; i < dev->num_lbas; ++i) {
-		ftl_l2p_set(dev, i, ftl_to_addr(FTL_ADDR_INVALID));
-	}
+	memset(dev->l2p, FTL_ADDR_INVALID, dev->num_lbas * addr_size);
 
 	return 0;
 }