svn commit: r273335 - head/sys/fs/unionfs
Slawa Olhovchenkov
slw at zxy.spb.ru
Tue Oct 21 21:03:50 UTC 2014
On Mon, Oct 20, 2014 at 05:53:49PM +0000, Mateusz Guzik wrote:
> Author: mjg
> Date: Mon Oct 20 17:53:49 2014
> New Revision: 273335
> URL: https://svnweb.freebsd.org/changeset/base/273335
>
> Log:
> unionfs: hold mount interlock while manipulating mnt_flag
>
> This is for consistency with other filesystems.
Can you check interoperability unionfs with zfs and devfs?
I have crashed unionfs with zfs.
unionfs with devfs need double devfs mount.
> Modified:
> head/sys/fs/unionfs/union_vfsops.c
>
> Modified: head/sys/fs/unionfs/union_vfsops.c
> ==============================================================================
> --- head/sys/fs/unionfs/union_vfsops.c Mon Oct 20 17:04:03 2014 (r273334)
> +++ head/sys/fs/unionfs/union_vfsops.c Mon Oct 20 17:53:49 2014 (r273335)
> @@ -290,12 +290,14 @@ unionfs_domount(struct mount *mp)
> return (error);
> }
>
> + MNT_ILOCK(mp);
> /*
> * Check mnt_flag
> */
> if ((ump->um_lowervp->v_mount->mnt_flag & MNT_LOCAL) &&
> (ump->um_uppervp->v_mount->mnt_flag & MNT_LOCAL))
> mp->mnt_flag |= MNT_LOCAL;
> + MNT_IUNLOCK(mp);
>
> /*
> * Get new fsid
> _______________________________________________
> svn-src-all at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/svn-src-all
> To unsubscribe, send any mail to "svn-src-all-unsubscribe at freebsd.org"
More information about the svn-src-all
mailing list