From f81ffb51ccf1b7cd6871dcb890175d2112edcbe0 Mon Sep 17 00:00:00 2001
From: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Date: Tue, 30 Nov 2021 14:15:03 +0800
Subject: [PATCH] bch/ioctl: support FLUSH cache by cmd: BIOC_FLUSH

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
---
 drivers/bch/bchdev_driver.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/bch/bchdev_driver.c b/drivers/bch/bchdev_driver.c
index 50e9102bac..7326a81f62 100644
--- a/drivers/bch/bchdev_driver.c
+++ b/drivers/bch/bchdev_driver.c
@@ -422,6 +422,14 @@ static int bch_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
         }
         break;
 
+      case BIOC_FLUSH:
+        {
+          /* Flush any dirty pages remaining in the cache */
+
+          ret = bchlib_flushsector(bch);
+        }
+        break;
+
 #ifdef CONFIG_BCH_ENCRYPTION
       /* This is a request to set the encryption key? */