From: Richard Yao <ryao@gentoo.org>
Date: Sun, 7 Jul 2013 15:54:51 +0000 (-0400)
Subject: Remove zio_alloc_arena
X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=commitdiff_plain;h=4edbd2f79a95ac608155bf518ea7253c8a0a61fe;hp=bce45ec9fb7bcdd8c306ccc7fc1ecc7f29cecbf5;p=zfs.git

Remove zio_alloc_arena

We declare zio_alloc_arena using extern, but it does not appear to exist
anywhere in the code. This permits undefined behavior, so lets remove
it.

Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1614
---

diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index 1acb801..62a9082 100644
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -79,9 +79,6 @@ kmem_cache_t *zio_data_buf_cache[SPA_MAXBLOCKSIZE >> SPA_MINBLOCKSHIFT];
 int zio_bulk_flags = 0;
 int zio_delay_max = ZIO_DELAY_MAX;
 
-#ifdef _KERNEL
-extern vmem_t *zio_alloc_arena;
-#endif
 extern int zfs_mg_alloc_failures;
 
 /*
@@ -151,9 +148,6 @@ zio_init(void)
 	size_t c;
 	vmem_t *data_alloc_arena = NULL;
 
-#ifdef _KERNEL
-	data_alloc_arena = zio_alloc_arena;
-#endif
 	zio_cache = kmem_cache_create("zio_cache", sizeof (zio_t), 0,
 	    zio_cons, zio_dest, NULL, NULL, NULL, KMC_KMEM);
 	zio_link_cache = kmem_cache_create("zio_link_cache",