1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
8 #define OAP_MAGIC 8675309
10 struct osc_async_page {
12 unsigned short oap_cmd;
13 unsigned short oap_interrupted:1;
15 struct list_head oap_pending_item;
16 struct list_head oap_urgent_item;
17 struct list_head oap_rpc_item;
20 unsigned oap_page_off;
21 enum async_flags oap_async_flags;
23 struct brw_page oap_brw_page;
25 struct oig_callback_context oap_occ;
26 struct obd_io_group *oap_oig;
27 struct ptlrpc_request *oap_request;
28 struct client_obd *oap_cli;
29 struct lov_oinfo *oap_loi;
31 struct obd_async_page_ops *oap_caller_ops;
32 void *oap_caller_data;
33 struct list_head oap_page_list;
34 struct ldlm_lock *oap_ldlm_lock;
38 #define oap_page oap_brw_page.pg
39 #define oap_count oap_brw_page.count
40 #define oap_brw_flags oap_brw_page.flag
42 #define OAP_FROM_COOKIE(c) \
43 (LASSERT(((struct osc_async_page *)(c))->oap_magic == OAP_MAGIC), \
44 (struct osc_async_page *)(c))
46 struct osc_cache_waiter {
47 struct list_head ocw_entry;
48 cfs_waitq_t ocw_waitq;
49 struct osc_async_page *ocw_oap;
53 #define OSCC_FLAG_RECOVERING 0x01
54 #define OSCC_FLAG_CREATING 0x02
55 #define OSCC_FLAG_NOSPC 0x04 /* can't create more objects on OST */
56 #define OSCC_FLAG_SYNC_IN_PROGRESS 0x08 /* only allow one thread to sync */
57 #define OSCC_FLAG_LOW 0x10
58 #define OSCC_FLAG_EXITING 0x20
60 int osc_precreate(struct obd_export *exp);
61 int osc_create(struct obd_export *exp, struct obdo *oa,
62 struct lov_stripe_md **ea, struct obd_trans_info *oti);
63 int osc_real_create(struct obd_export *exp, struct obdo *oa,
64 struct lov_stripe_md **ea, struct obd_trans_info *oti);
65 void oscc_init(struct obd_device *obd);
66 void osc_wake_cache_waiters(struct client_obd *cli);
69 int lproc_osc_attach_seqstat(struct obd_device *dev);
70 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars);
72 static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;}
73 static inline void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
75 memset(lvars, 0, sizeof(*lvars));
80 #define min_t(type,x,y) \
81 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
84 static inline int osc_recoverable_error(int rc)
86 return (rc == -EIO || rc == -EROFS || rc == -ENOMEM || rc == -EAGAIN);
89 /* return 1 if osc should be resend request */
90 static inline int osc_should_resend(int resend, struct client_obd *cli)
92 return atomic_read(&cli->cl_resends) ?
93 atomic_read(&cli->cl_resends) > resend : 1;
97 #endif /* OSC_INTERNAL_H */