LU-2139 osc: Track and limit "unstable" pages

[fs/lustre-release.git] / lustre / obdclass / class_obd.c

diff --git a/lustre/obdclass/class_obd.c b/lustre/obdclass/class_obd.c
index 4266524..cb0ea79 100644 (file)
--- a/lustre/obdclass/class_obd.c
+++ b/lustre/obdclass/class_obd.c
@@ -84,6 +84,8 @@ unsigned int obd_dump_on_eviction;
 EXPORT_SYMBOL(obd_dump_on_eviction);
 unsigned int obd_max_dirty_pages = 256;
 EXPORT_SYMBOL(obd_max_dirty_pages);
+cfs_atomic_t obd_unstable_pages;
+EXPORT_SYMBOL(obd_unstable_pages);
 cfs_atomic_t obd_dirty_pages;
 EXPORT_SYMBOL(obd_dirty_pages);
 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
@@ -112,6 +114,11 @@ EXPORT_SYMBOL(obd_dirty_transit_pages);
 char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
 EXPORT_SYMBOL(obd_jobid_var);
 
+#ifdef LPROCFS
+struct lprocfs_stats *obd_memory = NULL;
+EXPORT_SYMBOL(obd_memory);
+#endif
+
 /* Get jobid of current process by reading the environment variable
  * stored in between the "env_start" & "env_end" of task struct.
  *
@@ -448,9 +455,9 @@ int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 } /* class_handle_ioctl */
 
 #ifdef __KERNEL__
-extern cfs_psdev_t obd_psdev;
+extern struct miscdevice obd_psdev;
 #else
-void *obd_psdev = NULL;
+struct miscdevice obd_psdev;
 #endif
 
 #define OBD_INIT_CHECK
@@ -575,11 +582,11 @@ int init_obdclass(void)
 
         CFS_INIT_LIST_HEAD(&obd_types);
 
-        err = cfs_psdev_register(&obd_psdev);
-        if (err) {
-                CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
-                return err;
-        }
+       err = misc_register(&obd_psdev);
+       if (err) {
+               CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
+               return err;
+       }
 
         /* This struct is already zeroed for us (static global) */
         for (i = 0; i < class_devno_max(); i++)
@@ -588,10 +595,10 @@ int init_obdclass(void)
         /* Default the dirty page cache cap to 1/2 of system memory.
          * For clients with less memory, a larger fraction is needed
          * for other purposes (mostly for BGL). */
-       if (num_physpages <= 512 << (20 - PAGE_CACHE_SHIFT))
-               obd_max_dirty_pages = num_physpages / 4;
+       if (totalram_pages <= 512 << (20 - PAGE_CACHE_SHIFT))
+               obd_max_dirty_pages = totalram_pages / 4;
        else
-               obd_max_dirty_pages = num_physpages / 2;
+               obd_max_dirty_pages = totalram_pages / 2;
 
         err = obd_init_caches();
         if (err)
@@ -690,16 +697,16 @@ static void cleanup_obdclass(void)
 
         lustre_unregister_fs();
 
-        cfs_psdev_deregister(&obd_psdev);
-        for (i = 0; i < class_devno_max(); i++) {
-                struct obd_device *obd = class_num2obd(i);
-                if (obd && obd->obd_set_up &&
-                    OBT(obd) && OBP(obd, detach)) {
-                        /* XXX should this call generic detach otherwise? */
-                        LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
-                        OBP(obd, detach)(obd);
-                }
-        }
+       misc_deregister(&obd_psdev);
+       for (i = 0; i < class_devno_max(); i++) {
+               struct obd_device *obd = class_num2obd(i);
+               if (obd && obd->obd_set_up &&
+                   OBT(obd) && OBP(obd, detach)) {
+                       /* XXX should this call generic detach otherwise? */
+                       LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
+                       OBP(obd, detach)(obd);
+               }
+       }
        llog_info_fini();
 #ifdef HAVE_SERVER_SUPPORT
        lu_ucred_global_fini();