From: Li Zefan <lizf@cn.fujitsu.com>
Date: Fri, 10 Dec 2010 06:41:56 +0000 (+0000)
Subject: Btrfs: Make async snapshot ioctl more generic
X-Git-Tag: v2.6.37-rc6~30^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fdfb1e4f6c61477a61890b64974d65cdc3a98702;p=pandora-kernel.git

Btrfs: Make async snapshot ioctl more generic

If we had reserved some bytes in struct btrfs_ioctl_vol_args, we
wouldn't have to create a new structure for async snapshot creation.

Here we convert async snapshot ioctl to use a more generic ABI, as
we'll add more ioctls for snapshots/subvolumes in the future, readonly
snapshots for example.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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