35  * Legacy fanotify marks limits (8192) is per group and we introduced a tunable
36  * limit of marks per user, similar to inotify.  Effectively, the legacy limit
37  * of fanotify marks per user is <max marks per group> * <max groups per user>.
1264 	/* Only detached marks left? */  in fanotify_set_mark_fsid()
1268 	/* Do not allow mixing of marks with weak and strong fsid */  in fanotify_set_mark_fsid()
1272 	/* Allow mixing of marks with strong fsid from different fs */  in fanotify_set_mark_fsid()
1276 	/* Do not allow mixing marks with weak fsid from different fs */  in fanotify_set_mark_fsid()
1280 	/* Do not allow mixing marks from different btrfs sub-volumes */  in fanotify_set_mark_fsid()
1300 	 * Enforce per user marks limits per user in all containing user ns.  in fanotify_add_new_mark()
1483 		 * unlimited queue/marks.  in SYSCALL_DEFINE2()
1490 		 * prevents setting mount/filesystem marks on this group and  in SYSCALL_DEFINE2()
1741 	 * mount and sb marks are not allowed on kernel internal pseudo fs,  in fanotify_events_supported()
1852 	 * marks.  This also includes setting up such marks by a group that  in do_fanotify_mark()
1876 	 * Evictable is only relevant for inode marks, because only inode object  in do_fanotify_mark()
1960 		/* FAN_MARK_IGNORE requires SURV_MODIFY for sb/mount/dir marks */  in do_fanotify_mark()
1970 	/* Mask out FAN_EVENT_ON_CHILD flag for sb/mount/non-dir marks */  in do_fanotify_mark()
2035 	 * marks limited to the range [8192, 1048576]. mount and sb marks are  in fanotify_user_setup()
2036 	 * a lot cheaper than inode marks, but there is no reason for a user  in fanotify_user_setup()
2037 	 * to have many of those, so calculate by the cost of inode marks.  in fanotify_user_setup()