tree c81f93040c7f437f492c739bed37e03566710eb9
parent 63dd86fa79db737a50f47488e5249f24e5acebc1
author Anand Jain <Anand.Jain@oracle.com> 1407911062 +0800
committer Chris Mason <clm@fb.com> 1410986288 -0700

btrfs: update sprout seed pointer when seed fs is relinquished

We are not updating sprout fs seed pointer when all seed device
is replaced. This patch will check if all seed device has been
replaced and then update the sprout pointer accordingly.

Same reproducer as in the previous patch would apply here.
And notice that btrfs_close_device will check if seed fs is
present and spits out the error with out this patch.

int btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
{
::
                seed_devices = fs_devices->seed;
::
        while (seed_devices) {
                fs_devices = seed_devices;
                seed_devices = fs_devices->seed;
                __btrfs_close_devices(fs_devices);
                free_fs_devices(fs_devices);
        }

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>