"Serge E. Hallyn" <serue@xxxxxxxxxx> writes: > Quoting Eric W. Biederman (ebiederm@xxxxxxxxxxxx): >> From: Eric W. Biederman <ebiederm@xxxxxxxxxxxx> >> >> Currently every caller of sysfs_chmod_file happens at either >> file creation time to set a non-default mode or in response >> to a specific user requested space change in policy. Making >> timestamps of when the chmod happens and notification of >> a file changing mode uninteresting. > > But these changes can occur by togging values in sysfs files > (i.e. f71805f.c), right? Is this (specifically not doing inotify) > definately uncontroversial? The fs_notify_change was not introduced to deliberately support a feature but as a side effect of other cleanups. So there is no indication that anyone cares about inotify support. > I can't exactly picture an admin sitting there watching > nautilus for a sysfs file to become writeable, but could > imagine some site's automation getting hung... Or am I way > off base? I would be stunned if the shell script in the automation that writes to a sysfs file to make things writeable doesn't on it's next line kick off whatever needs it to be writable. With no benefit to using inotify and with only a handful of sysfs files affected I don't expect this change to break anything in userspace and I have been happily running with it for a year or so on all of our machines at work with no one problems. The reason I am making the change is that the goal of this patchset is to get sysfs to act like any other distributed filesystem in linux, and to use the same interfaces in roughly the same ways as other distributed filesystems. Unfortunately there is not a good interface for distributed filesystems to support inotify or I would use it. Eric -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
