TOMOYO: Use GFP_NOFS rather than GFP_KERNEL.
In Ubuntu, security_path_*() hooks are exported to Unionfs. Thus, prepare for
being called from inside VFS functions because I'm not sure whether it is safe
to use GFP_KERNEL or not.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c
index cf7d61f..8fe3ee2 100644
--- a/security/tomoyo/realpath.c
+++ b/security/tomoyo/realpath.c
@@ -138,7 +138,7 @@
*/
char *tomoyo_realpath_from_path(struct path *path)
{
- char *buf = kzalloc(sizeof(struct tomoyo_page_buffer), GFP_KERNEL);
+ char *buf = kzalloc(sizeof(struct tomoyo_page_buffer), GFP_NOFS);
BUILD_BUG_ON(sizeof(struct tomoyo_page_buffer)
<= TOMOYO_MAX_PATHNAME_LEN - 1);
@@ -269,7 +269,7 @@
atomic_inc(&ptr->users);
goto out;
}
- ptr = kzalloc(sizeof(*ptr) + len, GFP_KERNEL);
+ ptr = kzalloc(sizeof(*ptr) + len, GFP_NOFS);
allocated_len = ptr ? ksize(ptr) : 0;
if (!ptr || (tomoyo_quota_for_policy &&
atomic_read(&tomoyo_policy_memory_size) + allocated_len