Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\fork.c Create Date:2022-07-28 08:58:07
Last Modify:2020-03-17 11:04:53 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:Please note the differences between mmput and mm_release

Proto:static void mm_release(struct task_struct *tsk, struct mm_struct *mm)

Type:void

Parameter:

TypeParameterName
struct task_struct *tsk
struct mm_struct *mm
1291  uprobe_free_utask(tsk)
1294  deactivate_mm(tsk, mm)
1301  If CLONE_CHILD_CLEARTID: Then
1302  If Not ( Per task flags (PF_*), defined further below: & coredump in progress ) && atomic_read( & *@mm_users: The number of users including userspace. * Use mmget()/mmget_not_zero()/mmput() to modify. When this * drops to 0 (i.e. when the task exits and there are no other * temporary reference holders), we also release a reference on *@mm_count (which ) > 1 Then
1308  Write a simple value into user space(0, CLONE_CHILD_CLEARTID: )
1309  do_futex( CLONE_CHILD_CLEARTID: , FUTEX_WAKE, 1, NULL, NULL, 0, 0)
1312  CLONE_CHILD_CLEARTID: = NULL
1319  If vfork_done Then complete_vfork_done(tsk)
Caller
NameDescribe
exit_mm_release
exec_mm_release