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, 73 insertions, 1 deletions

diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index f53c8e3..24193c1 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -35,6 +35,8 @@
 
 #include <scsi/fc_frame.h>
 
+#define	FC_FC4_PROV_SIZE	(FC_TYPE_FCP + 1)	/* size of tables */
+
 /*
  * libfc error codes
  */
@@ -156,6 +158,7 @@ struct fc_rport_libfc_priv {
 	#define FC_RP_FLAGS_REC_SUPPORTED	(1 << 0)
 	#define FC_RP_FLAGS_RETRY		(1 << 1)
 	#define FC_RP_STARTED			(1 << 2)
+	#define FC_RP_FLAGS_CONF_REQ		(1 << 3)
 	unsigned int	           e_d_tov;
 	unsigned int	           r_a_tov;
 };
@@ -179,6 +182,7 @@ struct fc_rport_libfc_priv {
  * @rp_mutex:       The mutex that protects the remote port
  * @retry_work:     Handle for retries
  * @event_callback: Callback when READY, FAILED or LOGO states complete
+ * @prli_count:     Count of open PRLI sessions in providers
  * @rcu:	    Structure used for freeing in an RCU-safe manner
  */
 struct fc_rport_priv {
@@ -202,7 +206,13 @@ struct fc_rport_priv {
 	struct list_head            peers;
 	struct work_struct          event_work;
 	u32			    supported_classes;
+	u16                         prli_count;
 	struct rcu_head		    rcu;
+	u16			    sp_features;
+	u8			    spp_type;
+	void			    (*lld_event_callback)(struct fc_lport *,
+						      struct fc_rport_priv *,
+						      enum fc_rport_event);
 };
 
 /**
@@ -551,6 +561,16 @@ struct libfc_function_template {
 	struct fc_seq *(*seq_start_next)(struct fc_seq *);
 
 	/*
+	 * Set a response handler for the exchange of the sequence.
+	 *
+	 * STATUS: OPTIONAL
+	 */
+	void (*seq_set_resp)(struct fc_seq *sp,
+			     void (*resp)(struct fc_seq *, struct fc_frame *,
+					  void *),
+			     void *arg);
+
+	/*
 	 * Assign a sequence for an incoming request frame.
 	 *
 	 * STATUS: OPTIONAL
@@ -558,6 +578,13 @@ struct libfc_function_template {
 	struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *);
 
 	/*
+	 * Release the reference on the sequence returned by seq_assign().
+	 *
+	 * STATUS: OPTIONAL
+	 */
+	void (*seq_release)(struct fc_seq *);
+
+	/*
 	 * Reset an exchange manager, completing all sequences and exchanges.
 	 * If s_id is non-zero, reset only exchanges originating from that FID.
 	 * If d_id is non-zero, reset only exchanges sending to that FID.
@@ -656,6 +683,15 @@ struct libfc_function_template {
 	void (*rport_destroy)(struct kref *);
 
 	/*
+	 * Callback routine after the remote port is logged in
+	 *
+	 * STATUS: OPTIONAL
+	 */
+	void (*rport_event_callback)(struct fc_lport *,
+				     struct fc_rport_priv *,
+				     enum fc_rport_event);
+
+	/*
 	 * Send a fcp cmd from fsp pkt.
 	 * Called with the SCSI host lock unlocked and irqs disabled.
 	 *
@@ -749,6 +785,15 @@ struct fc_disc {
 			      enum fc_disc_event);
 };
 
+/*
+ * Local port notifier and events.
+ */
+extern struct blocking_notifier_head fc_lport_notifier_head;
+enum fc_lport_event {
+	FC_LPORT_EV_ADD,
+	FC_LPORT_EV_DEL,
+};
+
 /**
  * struct fc_lport - Local port
  * @host:                  The SCSI host associated with a local port
@@ -789,8 +834,10 @@ struct fc_disc {
  * @lso_max:               The maximum large offload send size
  * @fcts:                  FC-4 type mask
  * @lp_mutex:              Mutex to protect the local port
- * @list:                  Handle for list of local ports
+ * @list:                  Linkage on list of vport peers
  * @retry_work:            Handle to local port for delayed retry context
+ * @prov:		   Pointers available for use by passive FC-4 providers
+ * @lport_list:            Linkage on module-wide list of local ports
  */
 struct fc_lport {
 	/* Associations */
@@ -846,8 +893,32 @@ struct fc_lport {
 	struct mutex                   lp_mutex;
 	struct list_head               list;
 	struct delayed_work	       retry_work;
+	void			       *prov[FC_FC4_PROV_SIZE];
+	struct list_head               lport_list;
 };
 
+/**
+ * struct fc4_prov - FC-4 provider registration
+ * @prli:               Handler for incoming PRLI
+ * @prlo:               Handler for session reset
+ * @recv:		Handler for incoming request
+ * @module:		Pointer to module.  May be NULL.
+ */
+struct fc4_prov {
+	int (*prli)(struct fc_rport_priv *, u32 spp_len,
+		    const struct fc_els_spp *spp_in,
+		    struct fc_els_spp *spp_out);
+	void (*prlo)(struct fc_rport_priv *);
+	void (*recv)(struct fc_lport *, struct fc_frame *);
+	struct module *module;
+};
+
+/*
+ * Register FC-4 provider with libfc.
+ */
+int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *);
+void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *);
+
 /*
  * FC_LPORT HELPER FUNCTIONS
  *****************************/
@@ -978,6 +1049,7 @@ struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize);
 struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id);
 int fc_lport_bsg_request(struct fc_bsg_job *);
 void fc_lport_set_local_id(struct fc_lport *, u32 port_id);
+void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *);
 
 /*
  * REMOTE PORT LAYER