Messages in this thread | | | From | hooanon05@yahoo ... | Subject | Re: [RFC 0/7] [RFC] cramfs: fake write support | Date | Tue, 03 Jun 2008 20:04:41 +0900 |
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Arnd Bergmann: > Any writes should always just go to the top level. If the source file > for link() exists on the top level, link should succeed even if a target > exists on a lower level (given that the user has permissions to > unlink that file), but should return EXDEV if the source comes from > a lower level.
Then what will happen when a user builds a union by "empty tmpfs" + "cramfs"? Following your design, link(2) becomes useless in stacking fs.
You may be considering to implement a new dynamic link library for stacking. Hmm, that is intersting. It may be worth to think.
Junjiro Okajima
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