svn commit: r347968 - head/sys/kern

[Yoshihiro Ota]

Hi,

Does this change fix 'mount -u -rw /path' to remount read-only device with write mode?
I moticed an issue a couple of days ago but didn't have time to conform nor report.

Thanks,
Hiro

On Sun, 19 May 2019 09:18:10 +0000 (UTC)
Konstantin Belousov <kib at FreeBSD.org> wrote:

> Author: kib
> Date: Sun May 19 09:18:09 2019
> New Revision: 347968
> URL: https://svnweb.freebsd.org/changeset/base/347968
> 
> Log:
>   Fix rw->ro remount when there is a text vnode mapping.
>   
>   Reported and tested by:	hrs
>   Sponsored by:	The FreeBSD Foundation
>   MFC after:	16 days
> 
> Modified:
>   head/sys/kern/vfs_subr.c
> 
> Modified: head/sys/kern/vfs_subr.c
> ==============================================================================
> --- head/sys/kern/vfs_subr.c	Sun May 19 06:01:11 2019	(r347967)
> +++ head/sys/kern/vfs_subr.c	Sun May 19 09:18:09 2019	(r347968)
> @@ -3146,7 +3146,7 @@ loop:
>  
>  			if ((vp->v_type == VNON ||
>  			    (error == 0 && vattr.va_nlink > 0)) &&
> -			    (vp->v_writecount == 0 || vp->v_type != VREG)) {
> +			    (vp->v_writecount <= 0 || vp->v_type != VREG)) {
>  				VOP_UNLOCK(vp, 0);
>  				vdropl(vp);
>  				continue;
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