linux-kernel - [PATCH 4.8 07/85] btrfs: store and load values of stripes_min/stripes

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Date:   Wed,  4 Jan 2017 21:46:52 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, David Sterba <dsterba@...e.com>
Subject: [PATCH 4.8 07/85] btrfs: store and load values of stripes_min/stripes_max in balance status item

4.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Sterba <dsterba@...e.com>

commit ed0df618b1b06d7431ee4d985317fc5419a5d559 upstream.

The balance status item contains currently known filter values, but the
stripes filter was unintentionally not among them. This would mean, that
interrupted and automatically restarted balance does not apply the
stripe filters.

Fixes: dee32d0ac3719ef8d640efaf0884111df444730f
Signed-off-by: David Sterba <dsterba@...e.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/btrfs/ctree.h |    4 ++++
 1 file changed, 4 insertions(+)

--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2210,6 +2210,8 @@ btrfs_disk_balance_args_to_cpu(struct bt
 	cpu->target = le64_to_cpu(disk->target);
 	cpu->flags = le64_to_cpu(disk->flags);
 	cpu->limit = le64_to_cpu(disk->limit);
+	cpu->stripes_min = le32_to_cpu(disk->stripes_min);
+	cpu->stripes_max = le32_to_cpu(disk->stripes_max);
 }
 
 static inline void
@@ -2228,6 +2230,8 @@ btrfs_cpu_balance_args_to_disk(struct bt
 	disk->target = cpu_to_le64(cpu->target);
 	disk->flags = cpu_to_le64(cpu->flags);
 	disk->limit = cpu_to_le64(cpu->limit);
+	disk->stripes_min = cpu_to_le32(cpu->stripes_min);
+	disk->stripes_max = cpu_to_le32(cpu->stripes_max);
 }
 
 /* struct btrfs_super_block */