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scst/include/backport.h: Improve kobj_ns_grab_current() backport

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9032 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2020-06-21 16:28:01 +00:00
parent f8ea030ee1
commit a79655c1eb
1 changed files with 19 additions and 3 deletions
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22
scst/include/backport.h
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@@ -40,6 +40,9 @@
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
#include <linux/writeback.h> /* sync_page_range() */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24)
#include <net/net_namespace.h> /* init_net */
#endif
#include <rdma/ib_verbs.h>
#include <scsi/scsi_cmnd.h> /* struct scsi_cmnd */
struct scsi_target;
@@ -802,13 +805,26 @@ enum umh_wait {
/* <linux/kobject_ns.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 0, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
/*
* See also commit a685e08987d1 ("Delay struct net freeing while there's a
* sysfs instance refering to it") # v3.0.
* See also commit 8488a38f4d2f ("kobject: Break the kobject namespace defs
* into their own header") # v2.6.36.
*/
enum kobj_ns_type {
KOBJ_NS_TYPE_NET = 1,
};
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) && \
LINUX_VERSION_CODE < KERNEL_VERSION(3, 0, 0)
/*
* See also commit 5f256becd868 ("[NET]: Basic network namespace
* infrastructure.") # v2.6.24. a685e08987d1 ("Delay struct net freeing while
* there's a sysfs instance refering to it") # v3.0.
*/
static inline void *kobj_ns_grab_current(enum kobj_ns_type type)
{
WARN_ON_ONCE(type != KOBJ_NS_TYPE_NET);
return &init_net;
}