On Thu, 2010-09-23 at 11:36 -0400, Breitman, Jason wrote: > USE_MISC_DEVICE=boolean > A boolean to enable (yes) or disable (no) using the autofs miscellaneous > device. For example: > > Can someone explain to me what this option does? > What are the pros and cons of having USE_MISC_DEVICE=yes? > I am not able to find details online.
It provides access to the new ioctl interface. There is a description of what it does, why it has been done and how it can be used in the kernel source tree: Documentation/filesystems/autofs4-mount-control.txt Probably the biggest impact of using this, if it is available, is that autofs can check if a path is a mount without scanning and file based table. Clearly, if you don't have a lot of mounts it may not give any real improvement. It is also needed to allow automount to "re-connect" to mounts that were busy and left mounted during a restart. Previously processes using these mounts would forget their working directory because of the lazy umount that was done to clear them at startup. > > > Jason Breitman > [email protected] > > THIS MESSAGE AND ANY ATTACHMENTS ARE CONFIDENTIAL, PROPRIETARY, AND MAY BE > PRIVILEGED. If this message was misdirected, BlackRock, Inc. and its > subsidiaries, ("BlackRock") does not waive any confidentiality or privilege. > If you are not the intended recipient, please notify us immediately and > destroy the message without disclosing its contents to anyone. Any > distribution, use or copying of this e-mail or the information it contains by > other than an intended recipient is unauthorized. The views and opinions > expressed in this e-mail message are the author's own and may not reflect the > views and opinions of BlackRock, unless the author is authorized by BlackRock > to express such views or opinions on its behalf. All email sent to or from > this address is subject to electronic storage and review by BlackRock. > Although BlackRock operates anti-virus programs, it does not accept > responsibility for any damage whatsoever caused by viruses being passed. > > > _______________________________________________ > autofs mailing list > [email protected] > http://linux.kernel.org/mailman/listinfo/autofs _______________________________________________ autofs mailing list [email protected] http://linux.kernel.org/mailman/listinfo/autofs
