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author | David S. Miller <davem@davemloft.net> | 2016-09-23 06:46:57 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2016-09-23 06:46:57 -0400 |
commit | d6989d4bbe6c4d1c2a76696833a07f044e85694d (patch) | |
tree | 2d9a70d0feee4d4a20568be1b39a961fa0d27d81 /fs/notify/group.c | |
parent | xen-netback: switch to threaded irq for control ring (diff) | |
parent | Merge tag 'media/v4.8-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media (diff) | |
download | linux-dev-d6989d4bbe6c4d1c2a76696833a07f044e85694d.tar.xz linux-dev-d6989d4bbe6c4d1c2a76696833a07f044e85694d.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'fs/notify/group.c')
-rw-r--r-- | fs/notify/group.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/notify/group.c b/fs/notify/group.c index 3e2dd85be5dd..b47f7cfdcaa4 100644 --- a/fs/notify/group.c +++ b/fs/notify/group.c @@ -40,6 +40,17 @@ static void fsnotify_final_destroy_group(struct fsnotify_group *group) } /* + * Stop queueing new events for this group. Once this function returns + * fsnotify_add_event() will not add any new events to the group's queue. + */ +void fsnotify_group_stop_queueing(struct fsnotify_group *group) +{ + mutex_lock(&group->notification_mutex); + group->shutdown = true; + mutex_unlock(&group->notification_mutex); +} + +/* * Trying to get rid of a group. Remove all marks, flush all events and release * the group reference. * Note that another thread calling fsnotify_clear_marks_by_group() may still @@ -47,6 +58,14 @@ static void fsnotify_final_destroy_group(struct fsnotify_group *group) */ void fsnotify_destroy_group(struct fsnotify_group *group) { + /* + * Stop queueing new events. The code below is careful enough to not + * require this but fanotify needs to stop queuing events even before + * fsnotify_destroy_group() is called and this makes the other callers + * of fsnotify_destroy_group() to see the same behavior. + */ + fsnotify_group_stop_queueing(group); + /* clear all inode marks for this group, attach them to destroy_list */ fsnotify_detach_group_marks(group); |