Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd

* 'for-linus' of git://git.open-osd.org/linux-open-osd: (21 commits)
  ore: Enable RAID5 mounts
  exofs: Support for RAID5 read-4-write interface.
  ore: RAID5 Write
  ore: RAID5 read
  fs/Makefile: Always inspect exofs/
  ore: Make ore_calc_stripe_info EXPORT_SYMBOL
  ore/exofs: Change ore_check_io API
  ore/exofs: Define new ore_verify_layout
  ore: Support for partial component table
  ore: Support for short read/writes
  exofs: Support for short read/writes
  ore: Remove check for ios->kern_buff in _prepare_for_striping to later
  ore: cleanup: Embed an ore_striping_info inside ore_io_state
  ore: Only IO one group at a time (API change)
  ore/exofs: Change the type of the devices array (API change)
  ore: Make ore_striping_info and ore_calc_stripe_info public
  exofs: Remove unused data_map member from exofs_sb_info
  exofs: Rename struct ore_components comps => oc
  exofs/super.c: local functions should be static
  exofs/ore.c: local functions should be static
  ...

drivers/scsi/osd/Kconfig

@@ -11,10 +11,6 @@
 # it under the terms of the GNU General Public version 2 License as
 # published by the Free Software Foundation
 #
-# FIXME: SCSI_OSD_INITIATOR should select CONFIG (HMAC) SHA1 somehow.
-#        How is it done properly?
-#
-
 config SCSI_OSD_INITIATOR
 	tristate "OSD-Initiator library"
 	depends on SCSI

fs/Makefile

@@ -120,6 +120,6 @@ obj-$(CONFIG_DEBUG_FS)		+= debugfs/
 obj-$(CONFIG_OCFS2_FS)		+= ocfs2/
 obj-$(CONFIG_BTRFS_FS)		+= btrfs/
 obj-$(CONFIG_GFS2_FS)           += gfs2/
-obj-$(CONFIG_EXOFS_FS)          += exofs/
+obj-$(y)          		+= exofs/ # Multiple mods, used by nfs/objlayout
 obj-$(CONFIG_CEPH_FS)		+= ceph/
 obj-$(CONFIG_PSTORE)		+= pstore/

fs/exofs/Kbuild

@@ -13,7 +13,8 @@
 #
 
 # ore module library
-obj-$(CONFIG_ORE) += ore.o
+libore-y := ore.o ore_raid.o
+obj-$(CONFIG_ORE) += libore.o
 
 exofs-y := inode.o file.o symlink.o namei.o dir.o super.o
 obj-$(CONFIG_EXOFS_FS) += exofs.o

fs/exofs/Kconfig

@@ -1,10 +1,17 @@
+# Note ORE needs to "select ASYNC_XOR". So Not to force multiple selects
+# for every ORE user we do it like this. Any user should add itself here
+# at the "depends on EXOFS_FS || ..." with an ||. The dependencies are
+# selected here, and we default to "ON". So in effect it is like been
+# selected by any of the users.
 config ORE
 	tristate
+	depends on EXOFS_FS
+	select ASYNC_XOR
+	default SCSI_OSD_ULD
 
 config EXOFS_FS
 	tristate "exofs: OSD based file system support"
 	depends on SCSI_OSD_ULD
-	select ORE
 	help
 	  EXOFS is a file system that uses an OSD storage device,
 	  as its backing storage.

fs/exofs/exofs.h

@@ -53,6 +53,10 @@
 /* u64 has problems with printk this will cast it to unsigned long long */
 #define _LLU(x) (unsigned long long)(x)
 
+struct exofs_dev {
+	struct ore_dev ored;
+	unsigned did;
+};
 /*
  * our extension to the in-memory superblock
  */
@@ -66,13 +70,9 @@ struct exofs_sb_info {
 	u32		s_next_generation;	/* next gen # to use          */
 	atomic_t	s_curr_pending;		/* number of pending commands */
 
-	struct pnfs_osd_data_map data_map;	/* Default raid to use
-						 * FIXME: Needed ?
-						 */
 	struct ore_layout	layout;		/* Default files layout       */
 	struct ore_comp one_comp;		/* id & cred of partition id=0*/
-	struct ore_components comps;		/* comps for the partition    */
-	struct osd_dev	*_min_one_dev[1];	/* Place holder for one dev   */
+	struct ore_components oc;		/* comps for the partition    */
 };
 
 /*
@@ -86,7 +86,7 @@ struct exofs_i_info {
 	uint32_t       i_dir_start_lookup; /* which page to start lookup      */
 	uint64_t       i_commit_size;      /* the object's written length     */
 	struct ore_comp one_comp;	   /* same component for all devices  */
-	struct ore_components comps;	   /* inode view of the device table  */
+	struct ore_components oc;	   /* inode view of the device table  */
 };
 
 static inline osd_id exofs_oi_objno(struct exofs_i_info *oi)
@@ -207,7 +207,7 @@ extern const struct inode_operations exofs_fast_symlink_inode_operations;
  * bigger and that the device table repeats twice.
  * See: exofs_read_lookup_dev_table()
  */
-static inline void exofs_init_comps(struct ore_components *comps,
+static inline void exofs_init_comps(struct ore_components *oc,
 				    struct ore_comp *one_comp,
 				    struct exofs_sb_info *sbi, osd_id oid)
 {
@@ -217,13 +217,15 @@ static inline void exofs_init_comps(struct ore_components *comps,
 	one_comp->obj.id = oid;
 	exofs_make_credential(one_comp->cred, &one_comp->obj);
 
-	comps->numdevs = sbi->comps.numdevs;
-	comps->single_comp = EC_SINGLE_COMP;
-	comps->comps = one_comp;
+	oc->first_dev = 0;
+	oc->numdevs = sbi->layout.group_width * sbi->layout.mirrors_p1 *
+							sbi->layout.group_count;
+	oc->single_comp = EC_SINGLE_COMP;
+	oc->comps = one_comp;
 
 	/* Round robin device view of the table */
-	first_dev = (dev_mod * sbi->layout.mirrors_p1) % sbi->comps.numdevs;
-	comps->ods = sbi->comps.ods + first_dev;
+	first_dev = (dev_mod * sbi->layout.mirrors_p1) % sbi->oc.numdevs;
+	oc->ods = &sbi->oc.ods[first_dev];
 }
 
 #endif