From: Clayton Shotwell <clayton.shotwell@rockwellcollins.com>
To: linux-mtd@lists.infradead.org
Cc: bbrezillon@kernel.org, richard@nod.at,
brandon.maier@rockwellcollins.com, marek.vasut@gmail.com,
computersforpeace@gmail.com, dwmw2@infradead.org,
Clayton Shotwell <clayton.shotwell@rockwellcollins.com>
Subject: [PATCH 1/2] mtd: gluebi: Add sync logic
Date: Fri, 3 May 2019 15:13:37 -0500 [thread overview]
Message-ID: <1556914418-40288-1-git-send-email-clayton.shotwell@rockwellcollins.com> (raw)
Adding sync function to sync the underlying ubi device when a mtd sync
is called. This is being used to ensure a JFFS2 file system running on
top of the UBI volume is able to sync the underlying device.
Signed-off-by: Clayton Shotwell <clayton.shotwell@rockwellcollins.com>
---
drivers/mtd/ubi/gluebi.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c
index 6b655a5..b7d1d7c 100644
--- a/drivers/mtd/ubi/gluebi.c
+++ b/drivers/mtd/ubi/gluebi.c
@@ -280,6 +280,19 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
}
/**
+ * gluebi_sync - sync operation of emulated MTD devices.
+ * @mtd: the MTD device description object
+ *
+ * This function syncs the underlying UBI device when the MTD device is synced.
+ */
+static void gluebi_sync(struct mtd_info *mtd)
+{
+ struct gluebi_device *gluebi;
+ gluebi = container_of(mtd, struct gluebi_device, mtd);
+ ubi_sync(gluebi->ubi_num);
+}
+
+/**
* gluebi_create - create a gluebi device for an UBI volume.
* @di: UBI device description object
* @vi: UBI volume description object
@@ -318,6 +331,7 @@ static int gluebi_create(struct ubi_device_info *di,
mtd->_erase = gluebi_erase;
mtd->_get_device = gluebi_get_device;
mtd->_put_device = gluebi_put_device;
+ mtd->_sync = gluebi_sync;
/*
* In case of dynamic a volume, MTD device size is just volume size. In
--
1.9.1
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next reply other threads:[~2019-05-03 20:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-03 20:13 Clayton Shotwell [this message]
2019-05-03 20:13 ` [PATCH 2/2] jffs2: Add sync to underlying mtd device when file system is synced Clayton Shotwell
2019-05-05 22:22 ` Richard Weinberger
2019-05-16 11:04 ` Richard Weinberger
2019-05-16 15:12 ` Brandon Maier
2019-05-16 15:31 ` Richard Weinberger
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