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fe71c0e567
As of Linux 3.1 the shrink_dcache_memory and shrink_icache_memory functions have been removed. This same task is now accomplished more cleanly with per super block shrinkers. This unfortunately leaves us no easy way to support the dnlc_reduce_cache() function. This support has always been entirely optional. So when no reasonable interface is available allow the dnlc_reduce_cache() function to effectively become a no-op. The downside of this change is that it will prevent the zfs arc meta data limts from being enforced. However, the current zfs implementation in this regard is already flawed and needs to be reworked. If the arc needs to enfore a meta data limit it will need to be extended to coordinate directly with the zpl. This will allow us to drop all this compatibility code and get more fine grained control over the cache management. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #52 |
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