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umd: Remove exit_umh

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The bpfilter code no longer uses the umd_info.cleanup callback.  This
callback is what exit_umh exists to call.  So remove exit_umh and all
of it's associated booking.

v1: https://lkml.kernel.org/r/87bll6dlte.fsf_-_@x220.int.ebiederm.org
v2: https://lkml.kernel.org/r/87y2o53abg.fsf_-_@x220.int.ebiederm.org
Link: https://lkml.kernel.org/r/20200702164140.4468-15-ebiederm@xmission.com
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2020-06-25 17:40:40 -05:00
parent e80eb1dc86
commit 8c2f526639
4 changed files with 0 additions and 48 deletions
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16
include/linux/usermode_driver.h
View File

@@ -4,26 +4,10 @@
#include <linux/umh.h>
#include <linux/path.h>
#ifdef CONFIG_BPFILTER
void __exit_umh(struct task_struct *tsk);
static inline void exit_umh(struct task_struct *tsk)
{
if (unlikely(tsk->flags & PF_UMH))
__exit_umh(tsk);
}
#else
static inline void exit_umh(struct task_struct *tsk)
{
}
#endif
struct umd_info {
const char *driver_name;
struct file *pipe_to_umh;
struct file *pipe_from_umh;
struct list_head list;
void (*cleanup)(struct umd_info *info);
struct path wd;
struct pid *tgid;
};