This is a really really trivial first iteration, but I think it's enough to
try out CIFS notification support. Doesn't deal with mark deletion, but
that's best effort anyway: fsnotify() will filter out unneeded events.
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
---
fs/notify/fanotify/fanotify_user.c | 6 +++++-
fs/notify/inotify/inotify_user.c | 2 ++
include/linux/fs.h | 1 +
3 files changed, 8 insertions(+), 1 deletion(-)
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -1041,9 +1041,13 @@ static int do_fanotify_mark(int fanotify
else if (mark_type == FAN_MARK_FILESYSTEM)
ret = fanotify_add_sb_mark(group, mnt->mnt_sb, mask,
flags, fsid);
- else
+ else {
ret = fanotify_add_inode_mark(group, inode, mask,
flags, fsid);
+
+ if (!ret && inode->i_op->notify_update)
+ inode->i_op->notify_update(inode);
+ }
break;
case FAN_MARK_REMOVE:
if (mark_type == FAN_MARK_MOUNT)
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -754,6 +754,8 @@ SYSCALL_DEFINE3(inotify_add_watch, int,
/* create/update an inode mark */
ret = inotify_update_watch(group, inode, mask);
+ if (!ret && inode->i_op->notify_update)
+ inode->i_op->notify_update(inode);
path_put(&path);
fput_and_out:
fdput(f);
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1852,6 +1852,7 @@ struct inode_operations {
umode_t create_mode);
int (*tmpfile) (struct inode *, struct dentry *, umode_t);
int (*set_acl)(struct inode *, struct posix_acl *, int);
+ void (*notify_update)(struct inode *inode);
} ____cacheline_aligned;
static inline ssize_t call_read_iter(struct file *file, struct kiocb *kio,
