xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

umd: Remove exit_umh

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

28
kernel/usermode_driver.c
View File

@@ -9,9 +9,6 @@
#include <linux/task_work.h>
#include <linux/usermode_driver.h>
static LIST_HEAD(umh_list);
static DEFINE_MUTEX(umh_list_lock);
static struct vfsmount *blob_to_mnt(const void *data, size_t len, const char *name)
{
struct file_system_type *type;
@@ -134,7 +131,6 @@ static int umd_setup(struct subprocess_info *info, struct cred *new)
umd_info->pipe_to_umh = to_umh[1];
umd_info->pipe_from_umh = from_umh[0];
umd_info->tgid = get_pid(task_tgid(current));
current->flags |= PF_UMH;
return 0;
}
@@ -182,11 +178,6 @@ int fork_usermode_driver(struct umd_info *info)
goto out;
err = call_usermodehelper_exec(sub_info, UMH_WAIT_EXEC);
if (!err) {
mutex_lock(&umh_list_lock);
list_add(&info->list, &umh_list);
mutex_unlock(&umh_list_lock);
}
out:
if (argv)
argv_free(argv);
@@ -194,23 +185,4 @@ out:
}
EXPORT_SYMBOL_GPL(fork_usermode_driver);
void __exit_umh(struct task_struct *tsk)
{
struct umd_info *info;
struct pid *tgid = task_tgid(tsk);
mutex_lock(&umh_list_lock);
list_for_each_entry(info, &umh_list, list) {
if (info->tgid == tgid) {
list_del(&info->list);
mutex_unlock(&umh_list_lock);
goto out;
}
}
mutex_unlock(&umh_list_lock);
return;
out:
if (info->cleanup)
info->cleanup(info);
}