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>

1 files changed, 2 insertions, 2 deletions

diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c
index cf7d61f781b9..8fe3ee20a189 100644
--- a/security/tomoyo/realpath.c
+++ b/security/tomoyo/realpath.c
@@ -138,7 +138,7 @@ int tomoyo_realpath_from_path2(struct path *path, char *newname,
  */
 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 @@ const struct tomoyo_path_info *tomoyo_get_name(const char *name)
                 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