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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-03-30 15:50:03 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-13 13:59:40 +0200 |
| commit | d306606e58d53a9d8cd78fefacbe9a50b3aa9fcd (patch) | |
| tree | 4ff53131f6e1b06540a6f0415bb99a6810a68157 /virt | |
| parent | 50c648e394a0968f19d448b70bec82da88219963 (diff) | |
iser-target: Add missing se_cmd put for WRITE_PENDING in tx_comp_err
commit 03e7848a64ed535a30f5d7fc6dede2d5a6a2534b upstream.
This patch fixes a bug where outstanding RDMA_READs with WRITE_PENDING
status require an extra target_put_sess_cmd() in isert_put_cmd() code
when called from isert_cq_tx_comp_err() + isert_cq_drain_comp_llist()
context during session shutdown.
The extra kref PUT is required so that transport_generic_free_cmd()
invokes the last target_put_sess_cmd() -> target_release_cmd_kref(),
which will complete(&se_cmd->cmd_wait_comp) the outstanding se_cmd
descriptor with WRITE_PENDING status, and awake the completion in
target_wait_for_sess_cmds() to invoke TFO->release_cmd().
The bug was manifesting itself in target_wait_for_sess_cmds() where
a se_cmd descriptor with WRITE_PENDING status would end up sleeping
indefinately.
Acked-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions