Remove redundant assignments to arc_c

Several assignments to arc_c had no effect because it is ultimately
initialized to arc_c_max.

This aligns ZoL better with the upstream code which removed these
assignments some time ago.

Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Tim Chase <[email protected]>
Closes #5081

1 files changed, 0 insertions, 10 deletions

diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index 82b16ff52..eee4973b2 100755
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -5464,18 +5464,8 @@ arc_init(void)
 	/* Convert seconds to clock ticks */
 	arc_min_prefetch_lifespan = 1 * hz;
 
-	/* Start out with 1/8 of all memory */
-	arc_c = allmem / 8;
-
 #ifdef _KERNEL
 	/*
-	 * On architectures where the physical memory can be larger
-	 * than the addressable space (intel in 32-bit mode), we may
-	 * need to limit the cache to 1/8 of VM size.
-	 */
-	arc_c = MIN(arc_c, vmem_size(heap_arena, VMEM_ALLOC | VMEM_FREE) / 8);
-
-	/*
 	 * Register a shrinker to support synchronous (direct) memory
 	 * reclaim from the arc.  This is done to prevent kswapd from
 	 * swapping out pages when it is preferable to shrink the arc.