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-rw-r--r--fs/notify/fanotify/fanotify_user.c12
-rw-r--r--fs/notify/inode_mark.c8
-rw-r--r--fs/notify/mark.c21
-rw-r--r--fs/notify/vfsmount_mark.c5
4 files changed, 39 insertions, 7 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 3e275f17e7b7..9fe760baf69f 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -514,9 +514,10 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
if (flags & ~FAN_ALL_MARK_FLAGS)
return -EINVAL;
- switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE)) {
+ switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE | FAN_MARK_FLUSH)) {
case FAN_MARK_ADD:
case FAN_MARK_REMOVE:
+ case FAN_MARK_FLUSH:
break;
default:
return -EINVAL;
@@ -545,7 +546,7 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
group = filp->private_data;
/* create/update an inode mark */
- switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE)) {
+ switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE | FAN_MARK_FLUSH)) {
case FAN_MARK_ADD:
if (flags & FAN_MARK_MOUNT)
ret = fanotify_add_vfsmount_mark(group, mnt, mask, flags);
@@ -558,6 +559,13 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
else
ret = fanotify_remove_inode_mark(group, inode, mask, flags);
break;
+ case FAN_MARK_FLUSH:
+ if (flags & FAN_MARK_MOUNT)
+ fsnotify_clear_vfsmount_marks_by_group(group);
+ else
+ fsnotify_clear_inode_marks_by_group(group);
+ fsnotify_recalc_group_mask(group);
+ break;
default:
ret = -EINVAL;
}
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
index 4292f9e23ae8..0c0a48b1659f 100644
--- a/fs/notify/inode_mark.c
+++ b/fs/notify/inode_mark.c
@@ -104,6 +104,14 @@ void fsnotify_clear_marks_by_inode(struct inode *inode)
}
/*
+ * Given a group clear all of the inode marks associated with that group.
+ */
+void fsnotify_clear_inode_marks_by_group(struct fsnotify_group *group)
+{
+ fsnotify_clear_marks_by_group_flags(group, FSNOTIFY_MARK_FLAG_INODE);
+}
+
+/*
* given a group and inode, find the mark associated with that combination.
* if found take a reference to that mark and return it, else return NULL
*/
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index cb1d822f227f..1e824e64441d 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -270,18 +270,21 @@ err:
}
/*
- * Given a group, destroy all of the marks associated with that group.
+ * clear any marks in a group in which mark->flags & flags is true
*/
-void fsnotify_clear_marks_by_group(struct fsnotify_group *group)
+void fsnotify_clear_marks_by_group_flags(struct fsnotify_group *group,
+ unsigned int flags)
{
struct fsnotify_mark *lmark, *mark;
LIST_HEAD(free_list);
spin_lock(&group->mark_lock);
list_for_each_entry_safe(mark, lmark, &group->marks_list, g_list) {
- list_add(&mark->free_g_list, &free_list);
- list_del_init(&mark->g_list);
- fsnotify_get_mark(mark);
+ if (mark->flags & flags) {
+ list_add(&mark->free_g_list, &free_list);
+ list_del_init(&mark->g_list);
+ fsnotify_get_mark(mark);
+ }
}
spin_unlock(&group->mark_lock);
@@ -291,6 +294,14 @@ void fsnotify_clear_marks_by_group(struct fsnotify_group *group)
}
}
+/*
+ * Given a group, destroy all of the marks associated with that group.
+ */
+void fsnotify_clear_marks_by_group(struct fsnotify_group *group)
+{
+ fsnotify_clear_marks_by_group_flags(group, (unsigned int)-1);
+}
+
void fsnotify_duplicate_mark(struct fsnotify_mark *new, struct fsnotify_mark *old)
{
assert_spin_locked(&old->lock);
diff --git a/fs/notify/vfsmount_mark.c b/fs/notify/vfsmount_mark.c
index 1b61d0a942de..8f1aa02f4f02 100644
--- a/fs/notify/vfsmount_mark.c
+++ b/fs/notify/vfsmount_mark.c
@@ -51,6 +51,11 @@ void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
}
}
+void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group)
+{
+ fsnotify_clear_marks_by_group_flags(group, FSNOTIFY_MARK_FLAG_VFSMOUNT);
+}
+
/*
* Recalculate the mask of events relevant to a given vfsmount locked.
*/