Replace PKEY_DENY_WRITE with PKEY_DISABLE_WRITE,
which correspond with source code.
Signed-off-by: Wang Kai <morgan.w...@huawei.com>
---
Documentation/x86/protection-keys.txt | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Documentation/x86/protection-keys.txt
b/Documentation/x86/protection-keys.txt
index b643045..fa46dcb 100644
--- a/Documentation/x86/protection-keys.txt
+++ b/Documentation/x86/protection-keys.txt
@@ -34,7 +34,7 @@ with a key. In this example WRPKRU is wrapped by a C function
called pkey_set().
int real_prot = PROT_READ|PROT_WRITE;
- pkey = pkey_alloc(0, PKEY_DENY_WRITE);
+ pkey = pkey_alloc(0, PKEY_DISABLE_WRITE);
ptr = mmap(NULL, PAGE_SIZE, PROT_NONE, MAP_ANONYMOUS|MAP_PRIVATE, -1,
0);
ret = pkey_mprotect(ptr, PAGE_SIZE, real_prot, pkey);
... application runs here
@@ -42,9 +42,9 @@ called pkey_set().
Now, if the application needs to update the data at 'ptr', it can
gain access, do the update, then remove its write access:
- pkey_set(pkey, 0); // clear PKEY_DENY_WRITE
+ pkey_set(pkey, 0); // clear PKEY_DISABLE_WRITE
*ptr = foo; // assign something
- pkey_set(pkey, PKEY_DENY_WRITE); // set PKEY_DENY_WRITE again
+ pkey_set(pkey, PKEY_DISABLE_WRITE); // set PKEY_DISABLE_WRITE again
Now when it frees the memory, it will also free the pkey since it
is no longer in use:
--
2.10.1
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