Re: [PATCH 2.6.13] lockless pagecache 7/7

[Christoph Lameter]

For Itanium (and I guess also for ppc64 and sparch64) the performance of 
write_lock/unlock is the same as spin_lock/unlock. There is at least 
one case where concurrent reads would be allowed without this patch. 

Maybe keep the rwlock_t there?
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