Messages in this thread | | | Subject | Re: [PATCH] lockfs patch for 2.6 | From | Chris Mason <> | Date | Sun, 14 Mar 2004 13:56:30 -0500 |
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On Sun, 2004-03-14 at 13:44, Andrew Morton wrote: > Christoph Hellwig <hch@infradead.org> wrote: > > > > + * This takes the block device bd_mount_sem to make sure no new mounts > > + * happen on bdev until unlockfs is called. If a super is found on this > > + * block device, we hould a read lock on the s->s_umount sem to make sure > > + * nobody unmounts until the snapshot creation is done > > + */ > > +struct super_block *freeze_bdev(struct block_device *bdev) > > I think you do need s_umount, as the comments say. But this patch doesn't > touch it.
get_super gives us a read lock on it.
-chris
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