[PATCH 12/15] driver core: Implement tagged directory support for device classes.
Eric W. Biederman
ebiederm at xmission.com
Tue Jul 15 22:41:14 PDT 2008
Tejun Heo <htejun at gmail.com> writes:
> Greg, please disregard my earlier NACKs and commit the patches if you're
> okay with them. I'm working on cleaning it up but I don't think I'll be
> able to make it in time for merge window and as Eric said getting the
> functionality in place is more important at this point as it doesn't
> affect user visible interface.
> Eric, with the multiple superblocks, sysfs now uses inode from the
> default sysfs_sb with dentries from other sb's. Is this okay? Are
> there any other filesystems which do this?
I don't know of any other filesystems where this unique challenge arises.
/proc almost qualifies but it never needs to be modified.
It is certainly ok to go from multiple dentries to a single inode.
I'm trying to remember why I choose to do that. I think both because it simplifies
the locking and keeps us more efficient in the icache.
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