[PATCH RESEND v4 0/4] device_list_add() peparation to add reappearing missing device

[Anand Jain <anand.jain@oracle.com>]

(Apply on top of my patchset
   [PATCH v4 0/6] preparatory work to add device forget
 for conflict free apply. They don't actually depend on
 each other though).

v3->v4:
 @3/4: Just return device instead of PTR_ERR(ERR_PTR(device));

v2->v3:
 Fix device_list_add() fn description which was still referring to the
 previous return values.

v1->v2:
 Drop patch 5/5 for uuid_mutex optimize. That was wrong. Thanks Josef.
 In patch 3/5 make btrfs_device * as return.

Cleanup of device_list_add(), mainly in preparation to handle
reappearing missing device which its next reroll will be sent
separately.

Anand Jain (4):
  btrfs: move pr_info into device_list_add
  btrfs: set the total_devices in device_list_add()
  btrfs: get device pointer from device_list_add()
  btrfs: drop devid as device_list_add() arg

 fs/btrfs/volumes.c | 63 +++++++++++++++++++++++-------------------------------
 1 file changed, 27 insertions(+), 36 deletions(-)

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2.7.0