Re: nfsd4_is_junction

[Christoph Hellwig <hch@infradead.org>]

On Sat, Oct 29, 2011 at 01:45:33PM -0400, J. Bruce Fields wrote:
> Note it also takes the convention that junctions should have the sticky
> bit set without being executable, and it does those checks before
> checking for the xattr, so it shouldn't be doing an xattr read for every
> lookup.
> 
> Grepping for S_NOSEC.... "no suid or xattr security attributes".  But
> "junction.type" isn't a "security attribute", is it?  I may not
> understand what that means.

It's basically to avoid doing getxattr calls if not needed.  So far this
was just for security xattrs, but this one falls into a pretty similar
category.