Don't allow skipping OSTs if index has been specified.

[fs/lustre-release.git] / lustre / osc / osc_internal.h

diff --git a/lustre/osc/osc_internal.h b/lustre/osc/osc_internal.h
index ae3e010..89f341c 100644 (file)
--- a/lustre/osc/osc_internal.h
+++ b/lustre/osc/osc_internal.h
@@ -1,71 +1,93 @@
 /* -*- 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
 
-#include <portals/lib-types.h> /* for PTL_MTU and PTL_MD_MAX_PAGES */
-
-
-/* bug 1578: negotiate BRW_MAX_SIZE with the OST, instead of hard-coding it */
-#define OSC_BRW_MAX_SIZE PTL_MTU
-#define OSC_BRW_MAX_IOV PTL_MD_MAX_PAGES
-
 #define OAP_MAGIC 8675309
 
 struct osc_async_page {
         int                     oap_magic;
+        unsigned short          oap_cmd;
+        unsigned short          oap_interrupted:1;
+
         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_flag                oap_brw_flags;
+        unsigned                oap_page_off;
         enum async_flags        oap_async_flags;
 
-        unsigned long           oap_interrupted:1;
-        struct obd_io_group      *oap_oig;
+        struct brw_page         oap_brw_page;
+
         struct oig_callback_context oap_occ;
+        struct obd_io_group     *oap_oig;
         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;
+        void                    *oap_caller_data;
 };
 
+#define oap_page        oap_brw_page.pg
+#define oap_count       oap_brw_page.count
+#define oap_brw_flags   oap_brw_page.flag
+
+#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;
+        cfs_waitq_t             ocw_waitq;
         struct osc_async_page   *ocw_oap;
         int                     ocw_rc;
 };
 
-#define OSCC_FLAG_RECOVERING 1
-#define OSCC_FLAG_CREATING   2
-#define OSCC_FLAG_NOSPC      4 /* can't create more objects on this OST */
+#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_precreate(struct obd_export *exp);
 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_export *exp);
+void oscc_init(struct obd_device *obd);
 void osc_wake_cache_waiters(struct client_obd *cli);
 
-#ifdef __KERNEL__
+#ifdef LPROCFS
 int lproc_osc_attach_seqstat(struct obd_device *dev);
+void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars);
 #else
 static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;}
+static inline void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
+{
+        memset(lvars, 0, sizeof(*lvars));
+}
+#endif
+
+static inline int osc_recoverable_error(int rc)
+{
+        return (rc == -EIO || rc == -EROFS || rc == -ENOMEM || rc == -EAGAIN);
+}
+
+/* return 1 if osc should be resend request */
+static inline int osc_should_resend(int resend, struct client_obd *cli)
+{
+        return atomic_read(&cli->cl_resends) ? 
+               atomic_read(&cli->cl_resends) > resend : 1; 
+}
+
+#ifndef min_t
+#define min_t(type,x,y) \
+        ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
 #endif
 
 #endif /* OSC_INTERNAL_H */