call_usermodehelper(): increase reliability

[linux-2.6-omap-h63xx.git] / include / linux / kmod.h

diff --git a/include/linux/kmod.h b/include/linux/kmod.h
index 0509c4ce485793e748054aa558e559691a6af79d..a1a91577813c6bfb25ea89c9304f0c2128a87464 100644 (file)
--- a/include/linux/kmod.h
+++ b/include/linux/kmod.h
@@ -19,6 +19,7 @@
  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <linux/gfp.h>
 #include <linux/stddef.h>
 #include <linux/errno.h>
 #include <linux/compiler.h>
@@ -41,8 +42,8 @@ struct file;
 struct subprocess_info;
 
 /* Allocate a subprocess_info structure */
-struct subprocess_info *call_usermodehelper_setup(char *path,
-                                                 char **argv, char **envp);
+struct subprocess_info *call_usermodehelper_setup(char *path, char **argv,
+                                                 char **envp, gfp_t gfp_mask);
 
 /* Set various pieces of state into the subprocess_info structure */
 void call_usermodehelper_setkeys(struct subprocess_info *info,
@@ -69,8 +70,9 @@ static inline int
 call_usermodehelper(char *path, char **argv, char **envp, enum umh_wait wait)
 {
        struct subprocess_info *info;
+       gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL;
 
-       info = call_usermodehelper_setup(path, argv, envp);
+       info = call_usermodehelper_setup(path, argv, envp, gfp_mask);
        if (info == NULL)
                return -ENOMEM;
        return call_usermodehelper_exec(info, wait);
@@ -81,8 +83,9 @@ call_usermodehelper_keys(char *path, char **argv, char **envp,
                         struct key *session_keyring, enum umh_wait wait)
 {
        struct subprocess_info *info;
+       gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL;
 
-       info = call_usermodehelper_setup(path, argv, envp);
+       info = call_usermodehelper_setup(path, argv, envp, gfp_mask);
        if (info == NULL)
                return -ENOMEM;