On Sat, 2014-10-04 at 08:14 +0000, Xin LI wrote:
> Author: delphij
> Date: Sat Oct  4 08:14:10 2014
> New Revision: 272506
> URL: https://svnweb.freebsd.org/changeset/base/272506
> 
> Log:
>   MFV r272495:
>   
>   In arc_kmem_reap_now(), reap range_seg_cache too to reclaim memory in
>   response of memory pressure.
>   
>   Illumos issue:
>       5163 arc should reap range_seg_cache
>   
>   MFC after:  1 week
> 
> Modified:
>   head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
>   head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/range_tree.c
> Directory Properties:
>   head/sys/cddl/contrib/opensolaris/   (props changed)
> 
> Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
> ==============================================================================
> --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Sat Oct  4 
> 08:08:56 2014        (r272505)
> +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Sat Oct  4 
> 08:14:10 2014        (r272506)
> @@ -2591,6 +2591,7 @@ arc_kmem_reap_now(arc_reclaim_strategy_t
>       size_t                  i;
>       kmem_cache_t            *prev_cache = NULL;
>       kmem_cache_t            *prev_data_cache = NULL;
> +     extern kmem_cache_t     *range_seg_cache;
>  

I get this when compiling sparc64 GENERIC, must be different warnings
enabled...

cc1: warnings being treated as errors
/local/build/staging/freebsd/head/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c:
 In function 'arc_kmem_reap_now':
/local/build/staging/freebsd/head/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c:2594:
 warning: nested extern declaration of 'range_seg_cache' [-Wnested-externs]

-- Ian

>       DTRACE_PROBE(arc__kmem_reap_start);
>  #ifdef _KERNEL
> @@ -2628,6 +2629,7 @@ arc_kmem_reap_now(arc_reclaim_strategy_t
>       }
>       kmem_cache_reap_now(buf_cache);
>       kmem_cache_reap_now(hdr_cache);
> +     kmem_cache_reap_now(range_seg_cache);
>  
>  #ifdef sun
>       /*
> 
> Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/range_tree.c
> ==============================================================================
> --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/range_tree.c  Sat Oct 
>  4 08:08:56 2014        (r272505)
> +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/range_tree.c  Sat Oct 
>  4 08:14:10 2014        (r272506)
> @@ -33,7 +33,7 @@
>  #include <sys/zio.h>
>  #include <sys/range_tree.h>
>  
> -static kmem_cache_t *range_seg_cache;
> +kmem_cache_t *range_seg_cache;
>  
>  void
>  range_tree_init(void)
> 


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