*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, Whamcloud, Inc.
+ * Copyright (c) 2012, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef _OSD_OI_H
#define _OSD_OI_H
-#if defined(__KERNEL__)
/* struct rw_semaphore */
#include <linux/rwsem.h>
+#include <linux/jbd2.h>
#include <lustre_fid.h>
#include <lu_object.h>
#include <md_object.h>
+#define OSD_OI_FID_OID_BITS 6
+#define OSD_OI_FID_NR (1UL << OSD_OI_FID_OID_BITS)
+#define OSD_OII_NOGEN (0)
+
struct lu_fid;
struct osd_thread_info;
struct lu_site;
-struct thandle;
struct dt_device;
struct osd_device;
* Storage cookie. Datum uniquely identifying inode on the underlying file
* system.
*
- * XXX Currently this is ext2/ext3/ldiskfs specific thing. In the future this
- * should be generalized to work with other local file systems.
+ * osd_inode_id is the internal ldiskfs identifier for an object. It should
+ * not be visible outside of the osd-ldiskfs. Other OSDs may have different
+ * identifiers, so this cannot form any part of the OSD API.
*/
struct osd_inode_id {
- __u32 oii_ino; /* inode number */
- __u32 oii_gen; /* inode generation */
+ __u32 oii_ino; /* inode number */
+ __u32 oii_gen; /* inode generation */
+};
+
+/* OI cache entry */
+struct osd_idmap_cache {
+ struct lu_fid oic_fid;
+ struct osd_inode_id oic_lid;
+ struct osd_device *oic_dev;
+ __u16 oic_remote:1; /* FID isn't local */
};
+static inline void osd_id_pack(struct osd_inode_id *tgt,
+ const struct osd_inode_id *src)
+{
+ tgt->oii_ino = cpu_to_be32(src->oii_ino);
+ tgt->oii_gen = cpu_to_be32(src->oii_gen);
+}
+
+static inline void osd_id_unpack(struct osd_inode_id *tgt,
+ struct osd_inode_id *src)
+{
+ tgt->oii_ino = be32_to_cpu(src->oii_ino);
+ tgt->oii_gen = be32_to_cpu(src->oii_gen);
+}
+
+static inline void osd_id_gen(struct osd_inode_id *id, __u32 ino, __u32 gen)
+{
+ id->oii_ino = ino;
+ id->oii_gen = gen;
+}
+
+static inline void osd_id_to_inode(struct inode *inode,
+ const struct osd_inode_id *id)
+{
+ inode->i_ino = id->oii_ino;
+ inode->i_generation = id->oii_gen;
+}
+
+static inline int osd_id_eq(const struct osd_inode_id *id0,
+ const struct osd_inode_id *id1)
+{
+ return (id0->oii_ino == id1->oii_ino) &&
+ (id0->oii_gen == id1->oii_gen ||
+ id0->oii_gen == OSD_OII_NOGEN ||
+ id1->oii_gen == OSD_OII_NOGEN);
+}
+
+static inline int osd_id_eq_strict(const struct osd_inode_id *id0,
+ const struct osd_inode_id *id1)
+{
+ return (id0->oii_ino == id1->oii_ino && id0->oii_gen == id1->oii_gen);
+}
+
+enum oi_check_flags {
+ OI_CHECK_FLD = 0x00000001,
+ OI_KNOWN_ON_OST = 0x00000002,
+};
+
+extern unsigned int osd_oi_count;
+
int osd_oi_mod_init(void);
-int osd_oi_init(struct osd_thread_info *info, struct osd_device *osd);
+int osd_oi_init(struct osd_thread_info *info, struct osd_device *osd,
+ bool restored);
void osd_oi_fini(struct osd_thread_info *info, struct osd_device *osd);
int osd_oi_lookup(struct osd_thread_info *info, struct osd_device *osd,
- const struct lu_fid *fid, struct osd_inode_id *id);
+ const struct lu_fid *fid, struct osd_inode_id *id,
+ enum oi_check_flags flags);
int osd_oi_insert(struct osd_thread_info *info, struct osd_device *osd,
- const struct lu_fid *fid, const struct osd_inode_id *id,
- struct thandle *th, int ingore_quota);
+ const struct lu_fid *fid, const struct osd_inode_id *id,
+ handle_t *th, enum oi_check_flags flags, bool *exist);
int osd_oi_delete(struct osd_thread_info *info,
- struct osd_device *osd, const struct lu_fid *fid,
- struct thandle *th);
+ struct osd_device *osd, const struct lu_fid *fid,
+ handle_t *th, enum oi_check_flags flags);
+int osd_oi_update(struct osd_thread_info *info, struct osd_device *osd,
+ const struct lu_fid *fid, const struct osd_inode_id *id,
+ handle_t *th, enum oi_check_flags flags);
-#endif /* __KERNEL__ */
+int fid_is_on_ost(struct osd_thread_info *info, struct osd_device *osd,
+ const struct lu_fid *fid, enum oi_check_flags flags);
#endif /* _OSD_OI_H */