/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 * Copyright (C) 2003 Cluster File Systems, Inc.
 *
 * This code is issued under the GNU General Public License.
 * See the file COPYING in this distribution
 */

#ifndef OSC_INTERNAL_H
#define OSC_INTERNAL_H

#define OAP_MAGIC 8675309

struct osc_async_page {
        int                     oap_magic;
        struct list_head        oap_pending_item;
        struct list_head        oap_urgent_item;
        struct list_head        oap_rpc_item;
        struct page             *oap_page;
        int                     oap_cmd;

        obd_off                 oap_obj_off;
        obd_off                 oap_page_off;
        int                     oap_count;
        obd_flags                oap_brw_flags;
        enum async_flags        oap_async_flags;

        unsigned long           oap_interrupted:1;
        struct obd_io_group      *oap_oig;
        struct oig_callback_context oap_occ;
        struct ptlrpc_request   *oap_request;
        struct client_obd       *oap_cli;
        struct lov_oinfo        *oap_loi;

	struct obd_async_page_ops *oap_caller_ops;
        void                   *oap_caller_data;
};

#define OAP_FROM_COOKIE(c)                                                      \
        (LASSERT(((struct osc_async_page *)(c))->oap_magic == OAP_MAGIC),       \
         (struct osc_async_page *)(c))

struct osc_cache_waiter {
        struct list_head        ocw_entry;
        wait_queue_head_t       ocw_waitq;
        struct osc_async_page   *ocw_oap;
        int                     ocw_rc;
};

#define OSCC_FLAG_RECOVERING         0x01
#define OSCC_FLAG_CREATING           0x02
#define OSCC_FLAG_NOSPC              0x04 /* can't create more objects on OST */
#define OSCC_FLAG_SYNC_IN_PROGRESS   0x08 /* only allow one thread to sync */
#define OSCC_FLAG_LOW                0x10
#define OSCC_FLAG_EXITING            0x20

int osc_create(struct obd_export *exp, struct obdo *oa,
	       struct lov_stripe_md **ea, struct obd_trans_info *oti);
int osc_real_create(struct obd_export *exp, struct obdo *oa,
	       struct lov_stripe_md **ea, struct obd_trans_info *oti);
void oscc_init(struct obd_device *obd);
void osc_wake_cache_waiters(struct client_obd *cli);

#ifdef __KERNEL__
int lproc_osc_attach_seqstat(struct obd_device *dev);
#else
static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;}
#endif

#endif /* OSC_INTERNAL_H */