On Wed, 8 Jun 2016, Michael van Elst wrote:
paul%whooppee.com@localhost (Paul Goyette) writes:See misfs/specfs/spec_vnops.c::spec_close().yes, that would certainly explain the situation. It does, however, make it rather difficult to maintain a valid ref-count!specfs does the open refcounting. The device only has a single bit, open sets it and close clears it. That bit is added to a common counter that is used for other references.
Hmmm. Would it be valid, then, for my close() routine to reset the ref-count to zero rather than simply decrementing? Does the close() only get called if there are _NO_ outstanding open()s for _any_ process?
+------------------+--------------------------+------------------------+ | Paul Goyette | PGP Key fingerprint: | E-mail addresses: | | (Retired) | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com | | Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd.org | +------------------+--------------------------+------------------------+