Commit 70e09ccd authored by Jean-Philippe Brucker's avatar Jean-Philippe Brucker Committed by Zheng Zengkai
Browse files

mm: export symbol find_get_task_by_vpid 

maillist inclusion
category: feature
bugzilla: 51855
CVE: NA

Reference: https://jpbrucker.net/git/linux/commit/?h=sva/2021-03-01&id=176b3454e53ffdd4a4f6dbc51f128f1f35a1b357



---------------------------------------------

Userspace drivers implemented with VFIO might want to bind sub-processes
to their devices. In a VFIO ioctl, they provide a pid that is used to find
a task and its mm. Since VFIO can be built as a module, export the
find_get_task_by_vpid symbol.

Signed-off-by: default avatarJean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: default avatarLijun Fang <fanglijun3@huawei.com>
Reviewed-by: default avatarWeilong Chen <chenweilong@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent db5e7a79

kernel/pid.c

+1 −0
Original line number Diff line number Diff line
@@ -434,6 +434,7 @@ struct task_struct *find_get_task_by_vpid(pid_t nr) 


	return task;

}

EXPORT_SYMBOL_GPL(find_get_task_by_vpid);



struct pid *get_task_pid(struct task_struct *task, enum pid_type type)

{