On Thu, Aug 08, 2024 at 03:27:07PM GMT, Josef Bacik wrote: > From: Amir Goldstein <amir73il@xxxxxxxxx> > > Generate FAN_PRE_MODIFY permission event from fsnotify_file_perm() > pre-write hook to notify fanotify listeners on an intent to make > modification to a file. > > Like FAN_PRE_ACCESS, it is only allowed with FAN_CLASS_PRE_CONTENT > and unlike FAN_MODIFY, it is only allowed on regular files. > > Like FAN_PRE_ACCESS, it is generated without sb_start_write() held, > so it is safe to perform filesystem modifications in the context of > event handler. > > This pre-content event is meant to be used by hierarchical storage > managers that want to fill the content of files on first write access. > > Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx> > --- Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>
