diff options
| author |   Nicholas Bellinger <nab@linux-iscsi.org> | 2013-06-06 01:58:49 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-06-20 14:10:44 -0700 |
| commit | b9da5826df3936671ea67bc33f6fc8c2020526b8 (patch) | |
| tree | eecce0a859bf5048f8b9c683e4baf4cef2b62eaf /drivers/target | |
| parent | target: Drop unnecessary t_state_lock access for SCF_SUPPORTED_SAM_OPCODE assignment (diff) | |
| download | linux-dev-b9da5826df3936671ea67bc33f6fc8c2020526b8.tar.xz linux-dev-b9da5826df3936671ea67bc33f6fc8c2020526b8.zip | |
iscsi-target: Avoid unnecessary t_state_lock during unsolicited data-out check
In modern iscsi-target code, the setup and I/O submission is done within a
single process context, so there is no need to acquire se_cmd->t_state_lock while
checking SCF_SUPPORTED_SAM_OPCODE for determining when unsolicited data-out
should be dumped.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@kernel.org>
Cc: Kent Overstreet <koverstreet@google.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Moussa Ba <moussaba@micron.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index d7705e5824fb..cc43d4163adc 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1277,7 +1277,6 @@ iscsit_check_dataout_hdr(struct iscsi_conn *conn, unsigned char *buf, struct iscsi_data *hdr = (struct iscsi_data *)buf; struct iscsi_cmd *cmd = NULL; struct se_cmd *se_cmd; - unsigned long flags; u32 payload_length = ntoh24(hdr->dlength); int rc; @@ -1356,14 +1355,9 @@ iscsit_check_dataout_hdr(struct iscsi_conn *conn, unsigned char *buf, */ /* Something's amiss if we're not in WRITE_PENDING state... */ - spin_lock_irqsave(&se_cmd->t_state_lock, flags); WARN_ON(se_cmd->t_state != TRANSPORT_WRITE_PENDING); - spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); - - spin_lock_irqsave(&se_cmd->t_state_lock, flags); if (!(se_cmd->se_cmd_flags & SCF_SUPPORTED_SAM_OPCODE)) dump_unsolicited_data = 1; - spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); if (dump_unsolicited_data) { /* |