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authorAl Viro <viro@zeniv.linux.org.uk>2017-03-21 02:08:07 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2017-03-28 22:43:25 +0200
commitdb68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63 (patch)
tree77eda1d247853a2d414e0047c620b3c72bb11a1a /arch/parisc
parentadd asm-generic/extable.h (diff)
downloadlinux-db68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63.tar.xz
linux-db68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63.zip
new helper: uaccess_kernel()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/include/asm/futex.h2
-rw-r--r--arch/parisc/lib/memcpy.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/parisc/include/asm/futex.h b/arch/parisc/include/asm/futex.h
index ac8bd586ace8..0ba14300cd8e 100644
--- a/arch/parisc/include/asm/futex.h
+++ b/arch/parisc/include/asm/futex.h
@@ -109,7 +109,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
/* futex.c wants to do a cmpxchg_inatomic on kernel NULL, which is
* our gateway page, and causes no end of trouble...
*/
- if (segment_eq(KERNEL_DS, get_fs()) && !uaddr)
+ if (uaccess_kernel() && !uaddr)
return -EFAULT;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
diff --git a/arch/parisc/lib/memcpy.c b/arch/parisc/lib/memcpy.c
index f82ff10ed974..66f5160136c2 100644
--- a/arch/parisc/lib/memcpy.c
+++ b/arch/parisc/lib/memcpy.c
@@ -76,7 +76,7 @@ DECLARE_PER_CPU(struct exception_data, exception_data);
goto label; \
} while (0)
-#define get_user_space() (segment_eq(get_fs(), KERNEL_DS) ? 0 : mfsp(3))
+#define get_user_space() (uaccess_kernel() ? 0 : mfsp(3))
#define get_kernel_space() (0)
#define MERGE(w0, sh_1, w1, sh_2) ({ \