From: Andrew Morton <akpm@osdl.org>
Date: Thu, 7 Dec 2006 04:36:41 +0000 (-0800)
Subject: [PATCH] slab: use probe_kernel_address()
X-Git-Tag: v2.6.20-rc1~15^2~14^2~200
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=138ae6631a3d6f86851dd53686fa88295d1398bd;p=platform%2Fkernel%2Flinux-exynos.git

[PATCH] slab: use probe_kernel_address()

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/mm/slab.c b/mm/slab.c
index 7b8e5d6..86f5d6e 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -103,12 +103,12 @@
 #include	<linux/module.h>
 #include	<linux/rcupdate.h>
 #include	<linux/string.h>
+#include	<linux/uaccess.h>
 #include	<linux/nodemask.h>
 #include	<linux/mempolicy.h>
 #include	<linux/mutex.h>
 #include	<linux/rtmutex.h>
 
-#include	<asm/uaccess.h>
 #include	<asm/cacheflush.h>
 #include	<asm/tlbflush.h>
 #include	<asm/page.h>
@@ -2124,7 +2124,6 @@ kmem_cache_create (const char *name, size_t size, size_t align,
 	mutex_lock(&cache_chain_mutex);
 
 	list_for_each_entry(pc, &cache_chain, next) {
-		mm_segment_t old_fs = get_fs();
 		char tmp;
 		int res;
 
@@ -2133,9 +2132,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
 		 * destroy its slab cache and no-one else reuses the vmalloc
 		 * area of the module.  Print a warning.
 		 */
-		set_fs(KERNEL_DS);
-		res = __get_user(tmp, pc->name);
-		set_fs(old_fs);
+		res = probe_kernel_address(pc->name, tmp);
 		if (res) {
 			printk("SLAB: cache with size %d has lost its name\n",
 			       pc->buffer_size);