linux/drivers/target/iscsi/iscsi_target_transport.c
Bart Van Assche 8dcf07be2d target: Minimize #include directives
Remove superfluous #include directives from the include/target/*.h
files. Add missing #include directives to other *.h and *.c files.
Use forward declarations for structures where possible. This
change reduces the build time for make M=drivers/target on my
laptop from 27.1s to 18.7s or by about 30%.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
2016-12-09 10:22:28 -08:00

56 lines
1.2 KiB
C

#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/module.h>
#include <target/iscsi/iscsi_transport.h>
static LIST_HEAD(g_transport_list);
static DEFINE_MUTEX(transport_mutex);
struct iscsit_transport *iscsit_get_transport(int type)
{
struct iscsit_transport *t;
mutex_lock(&transport_mutex);
list_for_each_entry(t, &g_transport_list, t_node) {
if (t->transport_type == type) {
if (t->owner && !try_module_get(t->owner)) {
t = NULL;
}
mutex_unlock(&transport_mutex);
return t;
}
}
mutex_unlock(&transport_mutex);
return NULL;
}
void iscsit_put_transport(struct iscsit_transport *t)
{
module_put(t->owner);
}
int iscsit_register_transport(struct iscsit_transport *t)
{
INIT_LIST_HEAD(&t->t_node);
mutex_lock(&transport_mutex);
list_add_tail(&t->t_node, &g_transport_list);
mutex_unlock(&transport_mutex);
pr_debug("Registered iSCSI transport: %s\n", t->name);
return 0;
}
EXPORT_SYMBOL(iscsit_register_transport);
void iscsit_unregister_transport(struct iscsit_transport *t)
{
mutex_lock(&transport_mutex);
list_del(&t->t_node);
mutex_unlock(&transport_mutex);
pr_debug("Unregistered iSCSI transport: %s\n", t->name);
}
EXPORT_SYMBOL(iscsit_unregister_transport);