[patch] Avoid code that uses rcu_read_* when they are not usable (exported GPL)

patch_rcu (text/plain), 3.09 KB, created by Marc Dionne on 2009-06-24 14:13:26 UTC

diff -b -u -r ../pre11/openafs-1.4.11pre1/src/afs/afs_osi.c src/afs/afs_osi.c
--- ../pre11/openafs-1.4.11pre1/src/afs/afs_osi.c	2009-05-12 09:03:47.000000000 -0400
+++ src/afs/afs_osi.c	2009-06-24 09:54:29.120045515 -0400
@@ -1110,6 +1110,7 @@
     return rv;
 }
 #elif defined(AFS_LINUX22_ENV)
+#if defined(EXPORTED_RCU_READ_LOCK) && !defined(LINUX_KEYRING_SUPPORT)
 const struct AFS_UCRED *
 afs_osi_proc2cred(AFS_PROC * pr)
 {
@@ -1142,6 +1143,7 @@
 
     return rv;
 }
+#endif
 #else
 const struct AFS_UCRED *
 afs_osi_proc2cred(AFS_PROC * pr)
diff -b -u -r ../pre11/openafs-1.4.11pre1/src/afs/afs_user.c src/afs/afs_user.c
--- ../pre11/openafs-1.4.11pre1/src/afs/afs_user.c	2006-12-20 15:09:06.000000000 -0500
+++ src/afs/afs_user.c	2009-06-24 09:27:20.996501335 -0400
@@ -552,7 +552,7 @@
 }				/*afs_SetPrimary */
 
 
-#if AFS_GCPAGS
+#if defined(AFS_GCPAGS) && defined(EXPORTED_RCU_READ_LOCK) && !defined(LINUX_KEYRING_SUPPORT)
 
 /*
  * Called by osi_TraverseProcTable (from afs_GCPAGs) for each 
diff -b -u -r ../pre11/openafs-1.4.11pre1/src/afs/LINUX/osi_groups.c src/afs/LINUX/osi_groups.c
--- ../pre11/openafs-1.4.11pre1/src/afs/LINUX/osi_groups.c	2009-03-23 11:17:02.000000000 -0400
+++ src/afs/LINUX/osi_groups.c	2009-06-23 20:51:07.258620877 -0400
@@ -228,7 +228,7 @@
 static struct key_type *__key_type_keyring = &key_type_keyring;
 
 static int
-install_session_keyring(struct task_struct *task, struct key *keyring)
+install_session_keyring(struct key *keyring)
 {
     struct key *old;
     char desc[20];
@@ -242,21 +242,21 @@
 
 	/* create an empty session keyring */
 	not_in_quota = KEY_ALLOC_IN_QUOTA;
-	sprintf(desc, "_ses.%u", task->tgid);
+	sprintf(desc, "_ses.%u", current->tgid);
 
 #if defined(KEY_ALLOC_NEEDS_STRUCT_TASK)
 	keyring = key_alloc(__key_type_keyring, desc,
-			    task_uid(task), task_gid(task), task,
+			    current_uid(), current_gid(), current,
 			    (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL,
 			    not_in_quota);
 #elif defined(KEY_ALLOC_NEEDS_CRED)
 	keyring = key_alloc(__key_type_keyring, desc,
-			    task_uid(task), task_gid(task), current_cred(),
+			    current_uid(), current_gid(), current_cred(),
 			    (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL,
 			    not_in_quota);
 #else
 	keyring = key_alloc(__key_type_keyring, desc,
-			    task_uid(task), task_gid(task),
+			    current_uid(), current_gid(),
 			    (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL,
 			    not_in_quota);
 #endif
@@ -273,11 +273,11 @@
     }
 
     /* install the keyring */
-    spin_lock_irq(&task->sighand->siglock);
-    old = task_session_keyring(task);
+    spin_lock_irq(&current->sighand->siglock);
+    old = task_session_keyring(current);
     smp_wmb();
-    task_session_keyring(task) = keyring;
-    spin_unlock_irq(&task->sighand->siglock);
+    task_session_keyring(current) = keyring;
+    spin_unlock_irq(&current->sighand->siglock);
 
     if (old)
 	    key_put(old);
@@ -340,7 +340,7 @@
 #ifdef LINUX_KEYRING_SUPPORT
     if (code == 0) {
 
-	(void) install_session_keyring(current, NULL);
+	(void) install_session_keyring(NULL);
 
 	if (current_session_keyring()) {
 	    struct key *key;