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authorNicholas Bellinger <nab@linux-iscsi.org>2013-06-06 12:58:04 +0400
committerNicholas Bellinger <nab@linux-iscsi.org>2013-06-21 01:10:43 +0400
commitb28e545c4ddd7b594c64e8f3d9c2891eda253afc (patch)
tree1665296126ac76e6a1c5182e3087fc734361206c /drivers/target
parent1a398b973184342f30ab97711b9c38fd75df0384 (diff)
downloadlinux-b28e545c4ddd7b594c64e8f3d9c2891eda253afc.tar.xz
target: Drop unnecessary t_state_lock access for SCF_SUPPORTED_SAM_OPCODE assignment
This patch drops the se_cmd->t_state_lock access around SCF_SUPPORTED_SAM_OPCODE assignment within target_setup_cmd_from_cdb(). Original v4.0 target code required this as fabrics would be checking for this values in different process contexts for setup and I/O submission. Given that modern v4.1 target code performs setup and I/O submission from the same process context, this t_state_lock access is no longer required. 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/target_core_transport.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index e9ba012e82a9..94c5b323db3c 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1089,7 +1089,6 @@ sense_reason_t
target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb)
{
struct se_device *dev = cmd->se_dev;
- unsigned long flags;
sense_reason_t ret;
/*
@@ -1149,9 +1148,7 @@ target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb)
if (ret)
return ret;
- spin_lock_irqsave(&cmd->t_state_lock, flags);
cmd->se_cmd_flags |= SCF_SUPPORTED_SAM_OPCODE;
- spin_unlock_irqrestore(&cmd->t_state_lock, flags);
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep)