On Thu, Feb 23, 2006 at 05:36:56PM -0500, Alan Stern wrote:
> This patch (as660) changes the registration and unregistration routines
> for blocking notifier chains. During system startup, when task switching
> is illegal, the routines will avoid calling down_write().
Why is that necessary? The down_write() will immediately succeed as no
other process can possibly be holding the lock when the system is booting,
so the special casing doesn't fix anything.
-ben
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