From: nikita <nikita>
Date: Wed, 17 May 2006 13:13:49 +0000 (+0000)
Subject: add lu_context to ->ldto_device_{alloc,free}() methods
X-Git-Tag: v1_8_0_110~486^2~1816
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=2a16ace563fa2cbc08f6cef3c6d3f620e076e97e;p=fs%2Flustre-release.git

add lu_context to ->ldto_device_{alloc,free}() methods
---

diff --git a/lustre/cmm/cmm_device.c b/lustre/cmm/cmm_device.c
index f0c1bcc..1630ecf 100644
--- a/lustre/cmm/cmm_device.c
+++ b/lustre/cmm/cmm_device.c
@@ -106,13 +106,13 @@ static int cmm_add_mdc(struct lu_context *ctx,
 
         /*TODO check this MDC exists already */
 
-        ld = ldt->ldt_ops->ldto_device_alloc(ldt, cfg);
+        ld = ldt->ldt_ops->ldto_device_alloc(ctx, ldt, cfg);
 
         ld->ld_site = cmm2lu_dev(cm)->ld_site;
 
         rc = ldt->ldt_ops->ldto_device_init(ctx, ld, NULL);
         if (rc)
-                ldt->ldt_ops->ldto_device_free(ld);
+                ldt->ldt_ops->ldto_device_free(ctx, ld);
 
         /* pass config to the just created MDC */
         rc = ld->ld_ops->ldo_process_config(ctx, ld, cfg);
@@ -158,7 +158,8 @@ static struct lu_device_operations cmm_lu_ops = {
 
 /* --- lu_device_type operations --- */
 
-struct lu_device *cmm_device_alloc(struct lu_device_type *t,
+struct lu_device *cmm_device_alloc(struct lu_context *ctx,
+                                   struct lu_device_type *t,
                                    struct lustre_cfg *cfg)
 {
         struct lu_device  *l;
@@ -180,7 +181,7 @@ struct lu_device *cmm_device_alloc(struct lu_device_type *t,
         return l;
 }
 
-void cmm_device_free(struct lu_device *d)
+void cmm_device_free(struct lu_context *ctx, struct lu_device *d)
 {
         struct cmm_device *m = lu2cmm_dev(d);
 
@@ -228,7 +229,7 @@ static struct lu_device *cmm_device_fini(struct lu_context *ctx,
                 list_del(&mc->mc_linkage);
                 lu_device_put(cmm2lu_dev(cm));
                 ld->ld_type->ldt_ops->ldto_device_fini(ctx, ld_m);
-                ld->ld_type->ldt_ops->ldto_device_free(ld_m);
+                ld->ld_type->ldt_ops->ldto_device_free(ctx, ld_m);
         }
 
         EXIT;
diff --git a/lustre/cmm/mdc_device.c b/lustre/cmm/mdc_device.c
index 7558a6a..8e6b364 100644
--- a/lustre/cmm/mdc_device.c
+++ b/lustre/cmm/mdc_device.c
@@ -265,7 +265,8 @@ static struct lu_device *mdc_device_fini(struct lu_context *ctx,
         RETURN (NULL);
 }
 
-struct lu_device *mdc_device_alloc(struct lu_device_type *ldt,
+struct lu_device *mdc_device_alloc(struct lu_context *ctx,
+                                   struct lu_device_type *ldt,
                                    struct lustre_cfg *cfg)
 {
         struct lu_device  *ld;
@@ -316,7 +317,8 @@ static struct lu_device *mdc_device_fini(struct lu_context *ctx,
         RETURN (NULL);
 }
 
-struct lu_device *mdc_device_alloc(struct lu_device_type *ldt,
+struct lu_device *mdc_device_alloc(struct lu_context *ctx,
+                                   struct lu_device_type *ldt,
                                    struct lustre_cfg *cfg)
 {
         struct lu_device  *ld;
@@ -336,7 +338,7 @@ struct lu_device *mdc_device_alloc(struct lu_device_type *ldt,
 
         RETURN (ld);
 }
-void mdc_device_free(struct lu_device *ld)
+void mdc_device_free(struct lu_context *ctx, struct lu_device *ld)
 {
         struct mdc_device *mc = lu2mdc_dev(ld);
 
diff --git a/lustre/include/linux/lu_object.h b/lustre/include/linux/lu_object.h
index bee960c..a691224 100644
--- a/lustre/include/linux/lu_object.h
+++ b/lustre/include/linux/lu_object.h
@@ -260,12 +260,13 @@ struct lu_device_type_operations {
         /*
          * Allocate new device.
          */
-        struct lu_device *(*ldto_device_alloc)(struct lu_device_type *t,
+        struct lu_device *(*ldto_device_alloc)(struct lu_context *ctx,
+                                               struct lu_device_type *t,
                                                struct lustre_cfg *lcfg);
         /*
          * Free device. Dual to ->ldto_device_alloc().
          */
-        void (*ldto_device_free)(struct lu_device *d);
+        void (*ldto_device_free)(struct lu_context *ctx, struct lu_device *d);
 
         /*
          * Initialize the devices after allocation
diff --git a/lustre/include/linux/obd_class.h b/lustre/include/linux/obd_class.h
index b87e467..b614bb6 100644
--- a/lustre/include/linux/obd_class.h
+++ b/lustre/include/linux/obd_class.h
@@ -355,15 +355,23 @@ static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 
         ldt = obd->obd_type->typ_lu;
         if (ldt != NULL) {
+#ifdef __KERNEL__
+                struct lu_context ctx;
                 struct lu_device *d;
 
-                d = ldt->ldt_ops->ldto_device_alloc(ldt, cfg);
-                if (!IS_ERR(d)) {
-                        obd->obd_lu_dev = d;
-                        d->ld_obd = obd;
-                        rc = 0;
-                } else
-                        rc = PTR_ERR(d);
+                rc = lu_context_init(&ctx);
+                if (rc == 0) {
+                        lu_context_enter(&ctx);
+
+                        d = ldt->ldt_ops->ldto_device_alloc(&ctx, ldt, cfg);
+                        if (!IS_ERR(d)) {
+                                obd->obd_lu_dev = d;
+                                d->ld_obd = obd;
+                                rc = 0;
+                        } else
+                                rc = PTR_ERR(d);
+                }
+#endif
         } else {
                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
                 OBD_COUNTER_INCREMENT(obd, setup);
@@ -397,9 +405,19 @@ static inline int obd_cleanup(struct obd_device *obd)
         ldt = obd->obd_type->typ_lu;
         d = obd->obd_lu_dev;
         if (ldt != NULL && d != NULL) {
-                ldt->ldt_ops->ldto_device_free(d);
-                obd->obd_lu_dev = NULL;
-                rc = 0;
+#ifdef __KERNEL__
+                struct lu_context ctx;
+
+                rc = lu_context_init(&ctx);
+                if (rc == 0) {
+                        lu_context_enter(&ctx);
+                        ldt->ldt_ops->ldto_device_free(&ctx, d);
+                        lu_context_exit(&ctx);
+                        lu_context_fini(&ctx);
+                        obd->obd_lu_dev = NULL;
+                        rc = 0;
+                }
+#endif
         } else {
                 OBD_CHECK_DT_OP(obd, cleanup, 0);
                 rc = OBP(obd, cleanup)(obd);
diff --git a/lustre/mdd/mdd_handler.c b/lustre/mdd/mdd_handler.c
index 13a6292..b69901a 100644
--- a/lustre/mdd/mdd_handler.c
+++ b/lustre/mdd/mdd_handler.c
@@ -766,7 +766,8 @@ static struct obd_ops mdd_obd_device_ops = {
         .o_owner = THIS_MODULE
 };
 
-struct lu_device *mdd_device_alloc(struct lu_device_type *t,
+struct lu_device *mdd_device_alloc(struct lu_context *ctx,
+                                   struct lu_device_type *t,
                                    struct lustre_cfg *lcfg)
 {
         struct lu_device  *l;
@@ -785,7 +786,7 @@ struct lu_device *mdd_device_alloc(struct lu_device_type *t,
         return l;
 }
 
-static void mdd_device_free(struct lu_device *lu)
+static void mdd_device_free(struct lu_context *ctx, struct lu_device *lu)
 {
         struct mdd_device *m = lu2mdd_dev(lu);
 
diff --git a/lustre/mds/handler.c b/lustre/mds/handler.c
index 71502b6..8cc953d 100644
--- a/lustre/mds/handler.c
+++ b/lustre/mds/handler.c
@@ -492,7 +492,7 @@ static int mds_getstatus(struct ptlrpc_request *req)
 
 /* get the LOV EA from @inode and store it into @md.  It can be at most
  * @size bytes, and @size is updated with the actual EA size.
- * The EA size is also returned on success, and -ve errno on failure. 
+ * The EA size is also returned on success, and -ve errno on failure.
  * If there is no EA then 0 is returned. */
 int mds_get_md(struct obd_device *obd, struct inode *inode, void *md,
                int *size, int lock)
@@ -2629,7 +2629,7 @@ static struct obd_ops mdt_obd_ops = {
 quota_interface_t *quota_interface;
 quota_interface_t mds_quota_interface;
 
-static int __init mds_init(void)
+static __attribute__((unused)) int __init mds_init(void)
 {
         int rc;
         struct lprocfs_static_vars lvars;
@@ -2653,7 +2653,7 @@ static int __init mds_init(void)
         return 0;
 }
 
-static void /*__exit*/ mds_exit(void)
+static __attribute__((unused)) void /*__exit*/ mds_exit(void)
 {
         lquota_exit(quota_interface);
         if (quota_interface)
diff --git a/lustre/mdt/mdt_handler.c b/lustre/mdt/mdt_handler.c
index 6daa44f..1289d4a 100644
--- a/lustre/mdt/mdt_handler.c
+++ b/lustre/mdt/mdt_handler.c
@@ -1211,7 +1211,7 @@ static void mdt_stack_fini(struct lu_context *ctx,
                 /* each fini() returns next device in stack of layers
                  * * so we can avoid the recursion */
                 n = ldt->ldt_ops->ldto_device_fini(ctx, d);
-                ldt->ldt_ops->ldto_device_free(d);
+                ldt->ldt_ops->ldto_device_free(ctx, d);
 
                 type = ldt->ldt_obd_type;
                 type->typ_refcnt--;
@@ -1246,7 +1246,7 @@ static struct lu_device *mdt_layer_setup(struct lu_context *ctx,
                 GOTO(out_type, rc = -EINVAL);
         }
 
-        d = ldt->ldt_ops->ldto_device_alloc(ldt, cfg);
+        d = ldt->ldt_ops->ldto_device_alloc(ctx, ldt, cfg);
         if (IS_ERR(d)) {
                 CERROR("Cannot allocate device: '%s'\n", typename);
                 GOTO(out_type, rc = -ENODEV);
@@ -1265,7 +1265,7 @@ static struct lu_device *mdt_layer_setup(struct lu_context *ctx,
 
         RETURN(d);
 out_alloc:
-        ldt->ldt_ops->ldto_device_free(d);
+        ldt->ldt_ops->ldto_device_free(ctx, d);
         type->typ_refcnt--;
 out_type:
         class_put_type(type);
@@ -1666,7 +1666,7 @@ static struct obd_ops mdt_obd_device_ops = {
         .o_disconnect = mdt_obd_disconnect,
 };
 
-static void mdt_device_free(struct lu_device *d)
+static void mdt_device_free(struct lu_context *ctx, struct lu_device *d)
 {
         struct mdt_device *m = mdt_dev(d);
 
@@ -1674,7 +1674,8 @@ static void mdt_device_free(struct lu_device *d)
         OBD_FREE_PTR(m);
 }
 
-static struct lu_device *mdt_device_alloc(struct lu_device_type *t,
+static struct lu_device *mdt_device_alloc(struct lu_context *ctx,
+                                          struct lu_device_type *t,
                                           struct lustre_cfg *cfg)
 {
         struct lu_device  *l;
@@ -1687,7 +1688,7 @@ static struct lu_device *mdt_device_alloc(struct lu_device_type *t,
                 l = &m->mdt_md_dev.md_lu_dev;
                 result = mdt_init0(m, t, cfg);
                 if (result != 0) {
-                        mdt_device_free(l);
+                        mdt_device_free(ctx, l);
                         return ERR_PTR(result);
                 }
 
diff --git a/lustre/osd/osd_handler.c b/lustre/osd/osd_handler.c
index 069c3ee..936785e 100644
--- a/lustre/osd/osd_handler.c
+++ b/lustre/osd/osd_handler.c
@@ -80,7 +80,7 @@ static void  osd_object_release(struct lu_context *ctxt, struct lu_object *l);
 static int   osd_object_exists (struct lu_context *ctx, struct lu_object *o);
 static int   osd_object_print  (struct lu_context *ctx,
                                 struct seq_file *f, const struct lu_object *o);
-static void  osd_device_free   (struct lu_device *m);
+static void  osd_device_free   (struct lu_context *ctx, struct lu_device *m);
 static void *osd_key_init      (struct lu_context *ctx);
 static void  osd_key_fini      (struct lu_context *ctx, void *data);
 static int   osd_has_index     (struct osd_object *obj);
@@ -112,7 +112,8 @@ static struct osd_device  *osd_obj2dev      (struct osd_object *o);
 static struct lu_device   *osd2lu_dev       (struct osd_device * osd);
 static struct lu_device   *osd_device_fini  (struct lu_context *ctx,
                                              struct lu_device *d);
-static struct lu_device   *osd_device_alloc (struct lu_device_type *t,
+static struct lu_device   *osd_device_alloc (struct lu_context *ctx,
+                                             struct lu_device_type *t,
                                              struct lustre_cfg *cfg);
 static struct lu_object   *osd_object_alloc (struct lu_context *ctx,
                                              struct lu_device *d);
@@ -757,7 +758,8 @@ static struct lu_device *osd_device_fini(struct lu_context *ctx,
 	RETURN(NULL);
 }
 
-static struct lu_device *osd_device_alloc(struct lu_device_type *t,
+static struct lu_device *osd_device_alloc(struct lu_context *ctx,
+                                          struct lu_device_type *t,
                                           struct lustre_cfg *cfg)
 {
         struct lu_device  *l;
@@ -779,7 +781,7 @@ static struct lu_device *osd_device_alloc(struct lu_device_type *t,
         return l;
 }
 
-static void osd_device_free(struct lu_device *d)
+static void osd_device_free(struct lu_context *ctx, struct lu_device *d)
 {
         struct osd_device *o = osd_dev(d);