Re: Race in iput()?

[viro]

On Mon, Jun 28, 2004 at 09:40:10PM -0700, Paul Menage wrote:
> Hi,
> 
> Is the following sequence of events possible? If so, that would seem
> to be a bug.
> 
> - inode on non-MS_ACTIVE superblock is on unused list (fs being unmounted?)
> - prune_icache() starts processing inode, so sets I_LOCK
> - in another thread, someone calls iget() then iput() on inode 

Umm...  What would that other thread be?  MS_ACTIVE is removed upon the final
umount, all right, but that's done only when nobody except the filesystem
itself should be able to even see it...
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