commit 892abde56c1c5a62d49d8b70c73e5d388e74345d
author Richard Weinberger <richard@nod.at> Mon Nov 24 22:30:10 2014 +0100
committer Richard Weinberger <richard@nod.at> Wed Jan 28 15:57:13 2015 +0100
tree f2641cddfc53dc4ac8204a500ba630e7aede6cc8
parent fafdd2bf2638157670f28462b641150d16dbaeca

UBI: rename_volumes: Use UBI_METAONLY

By using UBI_METAONLY in rename_volumes() it is now possible to rename
an UBI volume atomically while it is open for writing.
This is useful for firmware upgrades.

Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Cc: Andrew Murray <amurray@embedded-bits.co.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Tested-by: Guido Martínez <guido@vanguardiasur.com.ar>
Reviewed-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Christoph Fritz <chf.fritz@googlemail.com>
Tested-by: Andrew Murray <amurray@embedded-bits.co.uk>

drivers/mtd/ubi/cdev.c

diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index f5c715c..286383c 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -736,7 +736,7 @@
 			goto out_free;
 		}
 
-		re->desc = ubi_open_volume(ubi->ubi_num, vol_id, UBI_READWRITE);
+		re->desc = ubi_open_volume(ubi->ubi_num, vol_id, UBI_METAONLY);
 		if (IS_ERR(re->desc)) {
 			err = PTR_ERR(re->desc);
 			ubi_err(ubi, "cannot open volume %d, error %d",