Date: Mon, 31 Jul 2006 23:27:03 -0500 From: Eric Anderson <anderson@centtech.com> To: freebsd-geom@freebsd.org Subject: locking questions (regarding file systems) Message-ID: <44CED817.1080905@centtech.com>
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Hi GEOMers, I'm writing a file system (read-only), and I need to do some GEOM related locking. I can mount/unmount the filesystem on a vnode backed md disk, but I can't re-mount on that device nor can I get rid (mdconfig -d) of it. It appears to be wedged in some kind of locking. Here's basically what I do: in the mount function for the FS, I do something like this: DROP_GIANT(); g_topology_lock(); error = g_vfs_open(devvp, &cp, "fsname", 0); g_topology_unlock(); PICKUP_GIANT(); What is needed in my unmount function to release those locks? I've tried some combinations of things, like: DROP_GIANT(); g_topology_lock(); # wedges here g_vfs_close(cp, td); g_topology_unlock(); PICKUP_GIANT(); vrele(devvp); Any help would be greatly appreciated! Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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