vhost/scsi: Convert to se_cmd->cmd_kref TARGET_SCF_ACK_KREF usage
authorNicholas Bellinger <nab@linux-iscsi.org>
Thu, 6 Jun 2013 09:20:41 +0000 (02:20 -0700)
committerNicholas Bellinger <nab@linux-iscsi.org>
Thu, 20 Jun 2013 21:10:47 +0000 (14:10 -0700)
commit084ed45b3846ffb803a6cd6d631c1723e77689e0
treefac8ae85cc4aff3a7fe01200e188757c00c8f404
parent6c131d0c583cd5ceb2b497ae2dbeeae180d3573d
vhost/scsi: Convert to se_cmd->cmd_kref TARGET_SCF_ACK_KREF usage

This patch coverts vhost/scsi to se_cmd->cmd_kref TARGET_SCF_ACK_KREF
usage, instead of assuming that vhost_scsi_free_cmd() is always called
before TCM processing is completed in the response fast path.

This includes adding vhost_scsi_check_stop_free() -> target_put_sess_cmd()
to perform the second se_cmd->cmd_kref put, and moving vhost_scsi_free_cmd()
resource release into tcm_vhost_release_cmd() that is invoked once the last
se_cmd->cmd_kref put occurs.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@kernel.org>
Cc: Kent Overstreet <koverstreet@google.com>
Cc: Asias He <asias@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Moussa Ba <moussaba@micron.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
drivers/vhost/scsi.c