[PATCH] inotify (1/5): split kernel API from userspace support

The following series of patches introduces a kernel API for inotify,
making it possible for kernel modules to benefit from inotify's
mechanism for watching inodes.  With these patches, inotify will
maintain for each caller a list of watches (via an embedded struct
inotify_watch), where each inotify_watch is associated with a
corresponding struct inode.  The caller registers an event handler and
specifies for which filesystem events their event handler should be
called per inotify_watch.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Acked-by: Robert Love <rml@novell.com>
Acked-by: John McCutchan <john@johnmccutchan.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 18 insertions, 6 deletions

diff --git a/fs/Kconfig b/fs/Kconfig
index f9b5842c8d2d..74f11a23622d 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -393,18 +393,30 @@ config INOTIFY
         bool "Inotify file change notification support"
         default y
         ---help---
-          Say Y here to enable inotify support and the associated system
-          calls.  Inotify is a file change notification system and a
-          replacement for dnotify.  Inotify fixes numerous shortcomings in
-          dnotify and introduces several new features.  It allows monitoring
-          of both files and directories via a single open fd.  Other features
-          include multiple file events, one-shot support, and unmount
+          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.
 
           For more information, see Documentation/filesystems/inotify.txt
 
           If unsure, say Y.
 
+config INOTIFY_USER
+        bool "Inotify support for userspace"
+        depends on INOTIFY
+        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.
+
+          For more information, see Documentation/filesystems/inotify.txt
+
+          If unsure, say Y.
+
 config QUOTA
         bool "Quota support"
         help