Re: [Jfs-discussion] [RFC, PATCH, RESEND] fs: push rcu_barrier() from deactivate_locked_super() to
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From: Al V. <viro@ZenIV.linux.org.uk> - 2012-06-08 23:40:43
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On Fri, Jun 08, 2012 at 03:25:50PM -0700, Andrew Morton wrote: > A neater implementation might be to add a kmem_cache* argument to > unregister_filesystem(). If that is non-NULL, unregister_filesystem() > does the rcu_barrier() and destroys the cache. That way we get to > delete (rather than add) a bunch of code from all filesystems and new > and out-of-tree filesystems cannot forget to perform the rcu_barrier(). There's often enough more than one cache, so that one is no-go. |