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	Fri, 26 Dec 1997 21:52:18 +1100
Date: Fri, 26 Dec 1997 21:52:18 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199712261052.VAA14888@godzilla.zeta.org.au>
To: cvs-all@FreeBSD.ORG, cvs-committers@FreeBSD.ORG, cvs-sys@FreeBSD.ORG,
        dyson@FreeBSD.ORG
Subject: Re: cvs commit: src/sys/vm vm_map.c
Sender: owner-cvs-sys@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

>  Modified files:
>    sys/vm               vm_map.c 
>  Log:
>  The ioopt code is still buggy, but wasn't fully disabled.

It still isn't fully disabled, and breaks LINT:

    ../../ufs/ufs/ufs_readwrite.c: In function `lfs_write':
    In file included from ../../ufs/lfs/lfs_vnops.c:110:
    ../../ufs/ufs/ufs_readwrite.c:296: dereferencing pointer to incomplete type
    ../../ufs/ufs/ufs_readwrite.c:296: `OBJ_OPT' undeclared (first use this function)
    ../../ufs/ufs/ufs_readwrite.c:296: (Each undeclared identifier is reported only once
    ../../ufs/ufs/ufs_readwrite.c:296: for each function it appears in.)
    ../../ufs/ufs/ufs_readwrite.c:297: dereferencing pointer to incomplete type
    ../../ufs/ufs/ufs_readwrite.c:298: warning: implicit declaration of function `vm_freeze_copyopts'
    ../../ufs/ufs/ufs_readwrite.c:299: warning: implicit declaration of function `OFF_TO_IDX'
    ...

When some missing headers are added so that lfs_vnops.o compiles, the link
step fails with:

    ffs_vnops.o: Definition of symbol `_vfs_ioopt' (multiply defined)
    lfs_vnops.o: Definition of symbol `_vfs_ioopt' (multiply defined)

ffs-specific sysctls should be attached to vfs.ffs, not to vfs.

Bruce