linux/fs/notify
Eric W. Biederman 019191342f signal: Use PIDTYPE_TGID to clearly store where file signals will be sent
When f_setown is called a pid and a pid type are stored.  Replace the use
of PIDTYPE_PID with PIDTYPE_TGID as PIDTYPE_TGID goes to the entire thread
group.  Replace the use of PIDTYPE_MAX with PIDTYPE_PID as PIDTYPE_PID now
is only for a thread.

Update the users of __f_setown to use PIDTYPE_TGID instead of
PIDTYPE_PID.

For now the code continues to capture task_pid (when task_tgid would
really be appropriate), and iterate on PIDTYPE_PID (even when type ==
PIDTYPE_TGID) out of an abundance of caution to preserve existing
behavior.

Oleg Nesterov suggested using the test to ensure we use PIDTYPE_PID
for tgid lookup also be used to avoid taking the tasklist lock.

Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-07-21 10:43:12 -05:00
..
dnotify signal: Use PIDTYPE_TGID to clearly store where file signals will be sent 2018-07-21 10:43:12 -05:00
fanotify pids: Compute task_tgid using signal->leader_pid 2018-07-21 10:43:12 -05:00
inotify fsnotify: add fsnotify_add_inode_mark() wrappers 2018-05-18 14:58:22 +02:00
Kconfig rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fdinfo.c fsnotify: use type id to identify connector object type 2018-05-18 14:58:22 +02:00
fdinfo.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fsnotify.c fsnotify: generalize send_to_group() 2018-05-18 14:58:22 +02:00
fsnotify.h fsnotify: remove redundant arguments to handle_event() 2018-05-18 14:58:22 +02:00
group.c fsnotify: use type id to identify connector object type 2018-05-18 14:58:22 +02:00
mark.c fsnotify: generalize iteration of marks by object type 2018-05-18 14:58:22 +02:00
notification.c fsnotify: Let userspace know about lost events due to ENOMEM 2018-02-27 10:25:33 +01:00