CVS commit: [netbsd-8] src/sys/dev

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Sat Sep  1 06:02:14 UTC 2018

Modified Files:
        src/sys/dev [netbsd-8]: fss.c fssvar.h

Log Message:
Pull up following revision(s) (requested by hannken in ticket #999):

        sys/dev/fssvar.h: revision 1.30
        sys/dev/fssvar.h: revision 1.31
        sys/dev/fss.c: revision 1.105
        sys/dev/fss.c: revision 1.106

Convert flags FSS_ACTIVE and FSS_ERROR into new member sc_state
with states FSS_IDLE, FSS_ACTIVE and FSS_ERROR.

No functional change intended.

Add two new states FSS_CREATING and FSS_DESTROYING and use them
while creating or destroying a snapshot.

Remove now unneeded sc_lock that made fss_ioctl mutually exclusive.
Fss_ioctl no longer blocks forever because a snapshot gets
created or destroyed.

Serialize snapshot creation and make it interruptible.


To generate a diff of this commit:
cvs rdiff -u -r1.98.2.2 -r1.98.2.3 src/sys/dev/fss.c
cvs rdiff -u -r1.29 -r1.29.10.1 src/sys/dev/fssvar.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.