Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus-1

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6: (9356 commits)
  [media] rc: update for bitop name changes
  fs: simplify iget & friends
  fs: pull inode->i_lock up out of writeback_single_inode
  fs: rename inode_lock to inode_hash_lock
  fs: move i_wb_list out from under inode_lock
  fs: move i_sb_list out from under inode_lock
  fs: remove inode_lock from iput_final and prune_icache
  fs: Lock the inode LRU list separately
  fs: factor inode disposal
  fs: protect inode->i_state with inode->i_lock
  lib, arch: add filter argument to show_mem and fix private implementations
  SLUB: Write to per cpu data when allocating it
  slub: Fix debugobjects with lockless fastpath
  autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd()
  autofs4 - remove autofs4_lock
  autofs4 - fix d_manage() return on rcu-walk
  autofs4 - fix autofs4_expire_indirect() traversal
  autofs4 - fix dentry leak in autofs4_expire_direct()
  autofs4 - reinstate last used update on access
  vfs - check non-mountpoint dentry might block in __follow_mount_rcu()
  ...

NOTE!

This merge commit was created to fix compilation error. The block
tree was merged upstream and removed the 'elv_queue_empty()'
function which the new 'mtdswap' driver is using. So a simple
merge of the mtd tree with upstream does not compile. And the
mtd tree has already be published, so re-basing it is not an option.

To fix this unfortunate situation, I had to merge upstream into the
mtd-2.6.git tree without committing, put the fixup patch on top of
this, and then commit this. The result is that we do not have commits
which do not compile.

In other words, this merge commit "merges" 3 things: the MTD tree, the
upstream tree, and the fixup patch.

1 files changed, 21 insertions, 14 deletions

diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 92024ed..cdd2f3f 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -25,6 +25,8 @@
 		(keyring)->payload.subscriptions,			\
 		rwsem_is_locked((struct rw_semaphore *)&(keyring)->sem)))
 
+#define KEY_LINK_FIXQUOTA 1UL
+
 /*
  * When plumbing the depths of the key tree, this sets a hard limit
  * set on how deep we're willing to go.
@@ -350,7 +352,7 @@ key_ref_t keyring_search_aux(key_ref_t keyring_ref,
 			goto error_2;
 		if (key->expiry && now.tv_sec >= key->expiry)
 			goto error_2;
-		key_ref = ERR_PTR(-ENOKEY);
+		key_ref = ERR_PTR(key->type_data.reject_error);
 		if (kflags & (1 << KEY_FLAG_NEGATIVE))
 			goto error_2;
 		goto found;
@@ -399,7 +401,7 @@ descend:
 
 		/* we set a different error code if we pass a negative key */
 		if (kflags & (1 << KEY_FLAG_NEGATIVE)) {
-			err = -ENOKEY;
+			err = key->type_data.reject_error;
 			continue;
 		}
 
@@ -699,11 +701,11 @@ static void keyring_unlink_rcu_disposal(struct rcu_head *rcu)
  * Preallocate memory so that a key can be linked into to a keyring.
  */
 int __key_link_begin(struct key *keyring, const struct key_type *type,
-		     const char *description,
-		     struct keyring_list **_prealloc)
+		     const char *description, unsigned long *_prealloc)
 	__acquires(&keyring->sem)
 {
 	struct keyring_list *klist, *nklist;
+	unsigned long prealloc;
 	unsigned max;
 	size_t size;
 	int loop, ret;
@@ -746,6 +748,7 @@ int __key_link_begin(struct key *keyring, const struct key_type *type,
 
 				/* note replacement slot */
 				klist->delkey = nklist->delkey = loop;
+				prealloc = (unsigned long)nklist;
 				goto done;
 			}
 		}
@@ -760,6 +763,7 @@ int __key_link_begin(struct key *keyring, const struct key_type *type,
 	if (klist && klist->nkeys < klist->maxkeys) {
 		/* there's sufficient slack space to append directly */
 		nklist = NULL;
+		prealloc = KEY_LINK_FIXQUOTA;
 	} else {
 		/* grow the key list */
 		max = 4;
@@ -794,8 +798,9 @@ int __key_link_begin(struct key *keyring, const struct key_type *type,
 		nklist->keys[nklist->delkey] = NULL;
 	}
 
+	prealloc = (unsigned long)nklist | KEY_LINK_FIXQUOTA;
 done:
-	*_prealloc = nklist;
+	*_prealloc = prealloc;
 	kleave(" = 0");
 	return 0;
 
@@ -836,12 +841,12 @@ int __key_link_check_live_key(struct key *keyring, struct key *key)
  * combination.
  */
 void __key_link(struct key *keyring, struct key *key,
-		struct keyring_list **_prealloc)
+		unsigned long *_prealloc)
 {
 	struct keyring_list *klist, *nklist;
 
-	nklist = *_prealloc;
-	*_prealloc = NULL;
+	nklist = (struct keyring_list *)(*_prealloc & ~KEY_LINK_FIXQUOTA);
+	*_prealloc = 0;
 
 	kenter("%d,%d,%p", keyring->serial, key->serial, nklist);
 
@@ -881,20 +886,22 @@ void __key_link(struct key *keyring, struct key *key,
  * Must be called with __key_link_begin() having being called.
  */
 void __key_link_end(struct key *keyring, struct key_type *type,
-		    struct keyring_list *prealloc)
+		    unsigned long prealloc)
 	__releases(&keyring->sem)
 {
 	BUG_ON(type == NULL);
 	BUG_ON(type->name == NULL);
-	kenter("%d,%s,%p", keyring->serial, type->name, prealloc);
+	kenter("%d,%s,%lx", keyring->serial, type->name, prealloc);
 
 	if (type == &key_type_keyring)
 		up_write(&keyring_serialise_link_sem);
 
 	if (prealloc) {
-		kfree(prealloc);
-		key_payload_reserve(keyring,
-				    keyring->datalen - KEYQUOTA_LINK_BYTES);
+		if (prealloc & KEY_LINK_FIXQUOTA)
+			key_payload_reserve(keyring,
+					    keyring->datalen -
+					    KEYQUOTA_LINK_BYTES);
+		kfree((struct keyring_list *)(prealloc & ~KEY_LINK_FIXQUOTA));
 	}
 	up_write(&keyring->sem);
 }
@@ -921,7 +928,7 @@ void __key_link_end(struct key *keyring, struct key_type *type,
  */
 int key_link(struct key *keyring, struct key *key)
 {
-	struct keyring_list *prealloc;
+	unsigned long prealloc;
 	int ret;
 
 	key_check(keyring);