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authorLinus Torvalds <torvalds@linux-foundation.org>2011-08-07 09:56:03 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-08-07 09:56:03 +0400
commitc2f340a69cabe0fb7b9f02d1a2495927db225a06 (patch)
treedd9bc3125f833adf163c47542917ebc18b1acc56 /include
parent3ddcd0569cd68f00f3beae9a7959b72918bb91f4 (diff)
parentcf283ade08c454e884394a4720f22421dd33a715 (diff)
downloadlinux-c2f340a69cabe0fb7b9f02d1a2495927db225a06.tar.xz
Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
* 'for-linus' of git://git.open-osd.org/linux-open-osd: ore: Make ore its own module exofs: Rename raid engine from exofs/ios.c => ore exofs: ios: Move to a per inode components & device-table exofs: Move exofs specific osd operations out of ios.c exofs: Add offset/length to exofs_get_io_state exofs: Fix truncate for the raid-groups case exofs: Small cleanup of exofs_fill_super exofs: BUG: Avoid sbi realloc exofs: Remove pnfs-osd private definitions nfs_xdr: Move nfs4_string definition out of #ifdef CONFIG_NFS_V4
Diffstat (limited to 'include')
-rw-r--r--include/linux/nfs_xdr.h10
-rw-r--r--include/scsi/osd_ore.h125
2 files changed, 130 insertions, 5 deletions
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 569ea5b76fda..abd615d74a29 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -773,6 +773,11 @@ struct nfs3_getaclres {
struct posix_acl * acl_default;
};
+struct nfs4_string {
+ unsigned int len;
+ char *data;
+};
+
#ifdef CONFIG_NFS_V4
typedef u64 clientid4;
@@ -963,11 +968,6 @@ struct nfs4_server_caps_res {
struct nfs4_sequence_res seq_res;
};
-struct nfs4_string {
- unsigned int len;
- char *data;
-};
-
#define NFS4_PATHNAME_MAXCOMPONENTS 512
struct nfs4_pathname {
unsigned int ncomponents;
diff --git a/include/scsi/osd_ore.h b/include/scsi/osd_ore.h
new file mode 100644
index 000000000000..c5c5e008e6de
--- /dev/null
+++ b/include/scsi/osd_ore.h
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2011
+ * Boaz Harrosh <bharrosh@panasas.com>
+ *
+ * Public Declarations of the ORE API
+ *
+ * This file is part of the ORE (Object Raid Engine) library.
+ *
+ * ORE is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. (GPL v2)
+ *
+ * ORE is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the ORE; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __ORE_H__
+#define __ORE_H__
+
+#include <scsi/osd_initiator.h>
+#include <scsi/osd_attributes.h>
+#include <scsi/osd_sec.h>
+#include <linux/pnfs_osd_xdr.h>
+
+struct ore_comp {
+ struct osd_obj_id obj;
+ u8 cred[OSD_CAP_LEN];
+};
+
+struct ore_layout {
+ /* Our way of looking at the data_map */
+ unsigned stripe_unit;
+ unsigned mirrors_p1;
+
+ unsigned group_width;
+ u64 group_depth;
+ unsigned group_count;
+};
+
+struct ore_components {
+ unsigned numdevs; /* Num of devices in array */
+ /* If @single_comp == EC_SINGLE_COMP, @comps points to a single
+ * component. else there are @numdevs components
+ */
+ enum EC_COMP_USAGE {
+ EC_SINGLE_COMP = 0, EC_MULTPLE_COMPS = 0xffffffff
+ } single_comp;
+ struct ore_comp *comps;
+ struct osd_dev **ods; /* osd_dev array */
+};
+
+struct ore_io_state;
+typedef void (*ore_io_done_fn)(struct ore_io_state *ios, void *private);
+
+struct ore_io_state {
+ struct kref kref;
+
+ void *private;
+ ore_io_done_fn done;
+
+ struct ore_layout *layout;
+ struct ore_components *comps;
+
+ /* Global read/write IO*/
+ loff_t offset;
+ unsigned long length;
+ void *kern_buff;
+
+ struct page **pages;
+ unsigned nr_pages;
+ unsigned pgbase;
+ unsigned pages_consumed;
+
+ /* Attributes */
+ unsigned in_attr_len;
+ struct osd_attr *in_attr;
+ unsigned out_attr_len;
+ struct osd_attr *out_attr;
+
+ bool reading;
+
+ /* Variable array of size numdevs */
+ unsigned numdevs;
+ struct ore_per_dev_state {
+ struct osd_request *or;
+ struct bio *bio;
+ loff_t offset;
+ unsigned length;
+ unsigned dev;
+ } per_dev[];
+};
+
+static inline unsigned ore_io_state_size(unsigned numdevs)
+{
+ return sizeof(struct ore_io_state) +
+ sizeof(struct ore_per_dev_state) * numdevs;
+}
+
+/* ore.c */
+int ore_get_rw_state(struct ore_layout *layout, struct ore_components *comps,
+ bool is_reading, u64 offset, u64 length,
+ struct ore_io_state **ios);
+int ore_get_io_state(struct ore_layout *layout, struct ore_components *comps,
+ struct ore_io_state **ios);
+void ore_put_io_state(struct ore_io_state *ios);
+
+int ore_check_io(struct ore_io_state *ios, u64 *resid);
+
+int ore_create(struct ore_io_state *ios);
+int ore_remove(struct ore_io_state *ios);
+int ore_write(struct ore_io_state *ios);
+int ore_read(struct ore_io_state *ios);
+int ore_truncate(struct ore_layout *layout, struct ore_components *comps,
+ u64 size);
+
+int extract_attr_from_ios(struct ore_io_state *ios, struct osd_attr *attr);
+
+extern const struct osd_attr g_attr_logical_length;
+
+#endif