This is a note to let you know that I've just added the patch titled
UBI: block: Add support for the UBI_VOLUME_UPDATED notification
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ubi-block-add-support-for-the-ubi_volume_updated-notification.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 06d9c2905f745c8b1920a335cbb366ba6b0fc754 Mon Sep 17 00:00:00 2001
From: Ezequiel Garcia <[email protected]>
Date: Fri, 29 Aug 2014 18:42:29 -0300
Subject: UBI: block: Add support for the UBI_VOLUME_UPDATED notification
From: Ezequiel Garcia <[email protected]>
commit 06d9c2905f745c8b1920a335cbb366ba6b0fc754 upstream.
Static volumes can change its 'used_bytes' when they get updated,
and so the block interface must listen to the UBI_VOLUME_UPDATED
notification to resize the block device accordingly.
Signed-off-by: Ezequiel Garcia <[email protected]>
Signed-off-by: Artem Bityutskiy <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/mtd/ubi/block.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -523,8 +523,12 @@ static int ubiblock_resize(struct ubi_vo
}
mutex_lock(&dev->dev_mutex);
- set_capacity(dev->gd, disk_capacity);
- ubi_msg("%s resized to %lld bytes", dev->gd->disk_name, vi->used_bytes);
+
+ if (get_capacity(dev->gd) != disk_capacity) {
+ set_capacity(dev->gd, disk_capacity);
+ ubi_msg("%s resized to %lld bytes", dev->gd->disk_name,
+ vi->used_bytes);
+ }
mutex_unlock(&dev->dev_mutex);
mutex_unlock(&devices_mutex);
return 0;
@@ -548,6 +552,14 @@ static int ubiblock_notify(struct notifi
case UBI_VOLUME_RESIZED:
ubiblock_resize(&nt->vi);
break;
+ case UBI_VOLUME_UPDATED:
+ /*
+ * If the volume is static, a content update might mean the
+ * size (i.e. used_bytes) was also changed.
+ */
+ if (nt->vi.vol_type == UBI_STATIC_VOLUME)
+ ubiblock_resize(&nt->vi);
+ break;
default:
break;
}
Patches currently in stable-queue which might be from
[email protected] are
queue-3.17/net-tso-fix-unaligned-access-to-crafted-tcp-header-in-helper-api.patch
queue-3.17/ubi-block-add-support-for-the-ubi_volume_updated-notification.patch
queue-3.17/ubi-dispatch-update-notification-if-the-volume-is-updated.patch
queue-3.17/ubi-block-fix-block-device-size-setting.patch
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