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Subject[patch] pagecache SMP-scalability patch [was: spinlock usage]


if you are doing SMP-intensive dbench runs, then check out the SMP
pagecache-scalability patch (against 2.4.2-ac20):

this patch splits up the main scalability offender in non-RAM-limited
dbench runs, which is pagecache_lock. The patch was designed and written
by David Miller, and is being forward ported / maintained by me. (The new
pagecache lock design is similar to TCP's hashed spinlocks, which proved
to scale excellently.)

(about lstat(): IMO lstat() should not call into the lowlevel FS code.)


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