fsnotify: allow ignored_mask to survive modification

Some inodes a group may want to never hear about a set of events even if
the inode is modified.  We add a new mark flag which indicates that these
marks should not have their ignored_mask cleared on modification.

Signed-off-by: Eric Paris <eparis@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 018416ec5ce4..8ca19df8a171 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -271,6 +271,7 @@ struct fsnotify_mark {
 #define FSNOTIFY_MARK_FLAG_INODE                0x01
 #define FSNOTIFY_MARK_FLAG_VFSMOUNT             0x02
 #define FSNOTIFY_MARK_FLAG_OBJECT_PINNED        0x04
+#define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY  0x08
         unsigned int flags;             /* vfsmount or inode mark? */
         void (*free_mark)(struct fsnotify_mark *mark); /* called on final put+free */
 };