inotify: reimplement inotify using fsnotify

Reimplement inotify_user using fsnotify.  This should be feature for feature
exactly the same as the original inotify_user.  This does not make any changes
to the in kernel inotify feature used by audit.  Those patches (and the eventual
removal of in kernel inotify) will come after the new inotify_user proves to be
working correctly.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>

1 files changed, 12 insertions, 8 deletions

diff --git a/fs/notify/inotify/Kconfig b/fs/notify/inotify/Kconfig
index 446792841023..5356884289a1 100644
--- a/fs/notify/inotify/Kconfig
+++ b/fs/notify/inotify/Kconfig
@@ -1,26 +1,30 @@
 config INOTIFY
         bool "Inotify file change notification support"
-        default y
+        default n
         ---help---
-          Say Y here to enable inotify support.  Inotify is a file change
-          notification system and a replacement for dnotify.  Inotify fixes
-          numerous shortcomings in dnotify and introduces several new features
-          including multiple file events, one-shot support, and unmount
-          notification.
+          Say Y here to enable legacy in kernel inotify support.  Inotify is a
+          file change notification system.  It is a replacement for dnotify.
+          This option only provides the legacy inotify in kernel API.  There
+          are no in tree kernel users of this interface since it is deprecated.
+          You only need this if you are loading an out of tree kernel module
+          that uses inotify.
 
           For more information, see <file:Documentation/filesystems/inotify.txt>
 
-          If unsure, say Y.
+          If unsure, say N.
 
 config INOTIFY_USER
         bool "Inotify support for userspace"
-        depends on INOTIFY
+        depends on FSNOTIFY
         default y
         ---help---
           Say Y here to enable inotify support for userspace, including the
           associated system calls.  Inotify allows monitoring of both files and
           directories via a single open fd.  Events are read from the file
           descriptor, which is also select()- and poll()-able.
+          Inotify fixes numerous shortcomings in dnotify and introduces several
+          new features including multiple file events, one-shot support, and
+          unmount notification.
 
           For more information, see <file:Documentation/filesystems/inotify.txt>