Hi,
On Sun, Apr 30, 2000 at 06:17:33PM +0300, root wrote:
>
> i'm trying to write a block allocator which gonna co-exists with the
> ext2fs module.
> my question is how can i lock the super_block to avoid conflicits on
> SMP machines ?
You don't, in general. The superblock lock protects data structures
while processes sleep for I/O. It has nothing to do with SMP, because
currently the relevant ext2 code all runs with the big kernel lock
anyway, and is thus never reentered.
--Stephen
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