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kobject: Export kobj_ns_grab_current() and kobj_ns_drop()

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Make it possible to call these two functions from a kernel module.
Note: despite their name, these two functions can be used meaningfully
independent of kobjects. A later patch will add calls to these
functions from the SRP driver because this patch series modifies the
SRP driver such that it can hold a reference to a namespace that can
last longer than the lifetime of the process through which the
namespace reference was obtained.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Bart Van Assche 2018-01-22 14:27:11 -08:00 committed by Doug Ledford
parent 052eac6eeb
commit 172856eac7
1 changed files with 2 additions and 0 deletions
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2
lib/kobject.c
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@ -1039,6 +1039,7 @@ void *kobj_ns_grab_current(enum kobj_ns_type type)
return ns;
}
EXPORT_SYMBOL_GPL(kobj_ns_grab_current);
const void *kobj_ns_netlink(enum kobj_ns_type type, struct sock *sk)
{
@ -1074,3 +1075,4 @@ void kobj_ns_drop(enum kobj_ns_type type, void *ns)
kobj_ns_ops_tbl[type]->drop_ns(ns);
spin_unlock(&kobj_ns_type_lock);
}
EXPORT_SYMBOL_GPL(kobj_ns_drop);