X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fosc%2Fosc_object.c;h=16bb564354fe03fac3e0c59d9955cd15de8a82ba;hp=91e37987323196f088a67becdd6750e992735409;hb=8f01f8b51d114b0d2d54a5ab7db3161782e52447;hpb=0a259bd7dbac76d75b89a389bc317720153aa452

diff --git a/lustre/osc/osc_object.c b/lustre/osc/osc_object.c
index 91e3798..16bb564 100644
--- a/lustre/osc/osc_object.c
+++ b/lustre/osc/osc_object.c
@@ -27,7 +27,7 @@
  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2014, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -43,8 +43,8 @@
 
 #include "osc_cl_internal.h"
 
-/** \addtogroup osc 
- *  @{ 
+/** \addtogroup osc
+ *  @{
  */
 
 /*****************************************************************************
@@ -75,30 +75,30 @@ static int osc_object_init(const struct lu_env *env, struct lu_object *obj,
 {
         struct osc_object           *osc   = lu2osc(obj);
         const struct cl_object_conf *cconf = lu2cl_conf(conf);
-        int i;
 
         osc->oo_oinfo = cconf->u.coc_oinfo;
 #ifdef CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK
 	mutex_init(&osc->oo_debug_mutex);
 #endif
-	spin_lock_init(&osc->oo_seatbelt);
-        for (i = 0; i < CRT_NR; ++i)
-                CFS_INIT_LIST_HEAD(&osc->oo_inflight[i]);
-
-	CFS_INIT_LIST_HEAD(&osc->oo_ready_item);
-	CFS_INIT_LIST_HEAD(&osc->oo_hp_ready_item);
-	CFS_INIT_LIST_HEAD(&osc->oo_write_item);
-	CFS_INIT_LIST_HEAD(&osc->oo_read_item);
+	INIT_LIST_HEAD(&osc->oo_ready_item);
+	INIT_LIST_HEAD(&osc->oo_hp_ready_item);
+	INIT_LIST_HEAD(&osc->oo_write_item);
+	INIT_LIST_HEAD(&osc->oo_read_item);
 
 	osc->oo_root.rb_node = NULL;
-	CFS_INIT_LIST_HEAD(&osc->oo_hp_exts);
-	CFS_INIT_LIST_HEAD(&osc->oo_urgent_exts);
-	CFS_INIT_LIST_HEAD(&osc->oo_rpc_exts);
-	CFS_INIT_LIST_HEAD(&osc->oo_reading_exts);
-	cfs_atomic_set(&osc->oo_nr_reads, 0);
-	cfs_atomic_set(&osc->oo_nr_writes, 0);
+	INIT_LIST_HEAD(&osc->oo_hp_exts);
+	INIT_LIST_HEAD(&osc->oo_urgent_exts);
+	INIT_LIST_HEAD(&osc->oo_rpc_exts);
+	INIT_LIST_HEAD(&osc->oo_reading_exts);
+	atomic_set(&osc->oo_nr_reads, 0);
+	atomic_set(&osc->oo_nr_writes, 0);
 	spin_lock_init(&osc->oo_lock);
 	spin_lock_init(&osc->oo_tree_lock);
+	spin_lock_init(&osc->oo_ol_spin);
+	INIT_LIST_HEAD(&osc->oo_ol_list);
+
+	atomic_set(&osc->oo_nr_ios, 0);
+	init_waitqueue_head(&osc->oo_io_waitq);
 
 	cl_object_page_init(lu2cl(obj), sizeof(struct osc_page));
 
@@ -108,23 +108,21 @@ static int osc_object_init(const struct lu_env *env, struct lu_object *obj,
 static void osc_object_free(const struct lu_env *env, struct lu_object *obj)
 {
 	struct osc_object *osc = lu2osc(obj);
-	int i;
 
-	for (i = 0; i < CRT_NR; ++i)
-		LASSERT(cfs_list_empty(&osc->oo_inflight[i]));
-
-	LASSERT(cfs_list_empty(&osc->oo_ready_item));
-	LASSERT(cfs_list_empty(&osc->oo_hp_ready_item));
-	LASSERT(cfs_list_empty(&osc->oo_write_item));
-	LASSERT(cfs_list_empty(&osc->oo_read_item));
+	LASSERT(list_empty(&osc->oo_ready_item));
+	LASSERT(list_empty(&osc->oo_hp_ready_item));
+	LASSERT(list_empty(&osc->oo_write_item));
+	LASSERT(list_empty(&osc->oo_read_item));
 
 	LASSERT(osc->oo_root.rb_node == NULL);
-	LASSERT(cfs_list_empty(&osc->oo_hp_exts));
-	LASSERT(cfs_list_empty(&osc->oo_urgent_exts));
-	LASSERT(cfs_list_empty(&osc->oo_rpc_exts));
-	LASSERT(cfs_list_empty(&osc->oo_reading_exts));
-	LASSERT(cfs_atomic_read(&osc->oo_nr_reads) == 0);
-	LASSERT(cfs_atomic_read(&osc->oo_nr_writes) == 0);
+	LASSERT(list_empty(&osc->oo_hp_exts));
+	LASSERT(list_empty(&osc->oo_urgent_exts));
+	LASSERT(list_empty(&osc->oo_rpc_exts));
+	LASSERT(list_empty(&osc->oo_reading_exts));
+	LASSERT(atomic_read(&osc->oo_nr_reads) == 0);
+	LASSERT(atomic_read(&osc->oo_nr_writes) == 0);
+	LASSERT(list_empty(&osc->oo_ol_list));
+	LASSERT(atomic_read(&osc->oo_nr_ios) == 0);
 
 	lu_object_fini(obj);
 	OBD_SLAB_FREE_PTR(osc, osc_object_kmem);
@@ -167,28 +165,28 @@ static int osc_attr_get(const struct lu_env *env, struct cl_object *obj,
         return 0;
 }
 
-int osc_attr_set(const struct lu_env *env, struct cl_object *obj,
-                 const struct cl_attr *attr, unsigned valid)
+static int osc_attr_update(const struct lu_env *env, struct cl_object *obj,
+			   const struct cl_attr *attr, unsigned valid)
 {
-        struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
-        struct ost_lvb   *lvb   = &oinfo->loi_lvb;
-
-        if (valid & CAT_SIZE)
-                lvb->lvb_size = attr->cat_size;
-        if (valid & CAT_MTIME)
-                lvb->lvb_mtime = attr->cat_mtime;
-        if (valid & CAT_ATIME)
-                lvb->lvb_atime = attr->cat_atime;
-        if (valid & CAT_CTIME)
-                lvb->lvb_ctime = attr->cat_ctime;
-        if (valid & CAT_BLOCKS)
-                lvb->lvb_blocks = attr->cat_blocks;
-        if (valid & CAT_KMS) {
-                CDEBUG(D_CACHE, "set kms from "LPU64"to "LPU64"\n",
-                       oinfo->loi_kms, (__u64)attr->cat_kms);
-                loi_kms_set(oinfo, attr->cat_kms);
-        }
-        return 0;
+	struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
+	struct ost_lvb   *lvb   = &oinfo->loi_lvb;
+
+	if (valid & CAT_SIZE)
+		lvb->lvb_size = attr->cat_size;
+	if (valid & CAT_MTIME)
+		lvb->lvb_mtime = attr->cat_mtime;
+	if (valid & CAT_ATIME)
+		lvb->lvb_atime = attr->cat_atime;
+	if (valid & CAT_CTIME)
+		lvb->lvb_ctime = attr->cat_ctime;
+	if (valid & CAT_BLOCKS)
+		lvb->lvb_blocks = attr->cat_blocks;
+	if (valid & CAT_KMS) {
+		CDEBUG(D_CACHE, "set kms from "LPU64"to "LPU64"\n",
+		       oinfo->loi_kms, (__u64)attr->cat_kms);
+		loi_kms_set(oinfo, attr->cat_kms);
+	}
+	return 0;
 }
 
 static int osc_object_glimpse(const struct lu_env *env,
@@ -202,6 +200,141 @@ static int osc_object_glimpse(const struct lu_env *env,
         RETURN(0);
 }
 
+static int osc_object_ast_clear(struct ldlm_lock *lock, void *data)
+{
+	ENTRY;
+
+	if (lock->l_ast_data == data)
+		lock->l_ast_data = NULL;
+	RETURN(LDLM_ITER_CONTINUE);
+}
+
+static int osc_object_prune(const struct lu_env *env, struct cl_object *obj)
+{
+	struct osc_object       *osc = cl2osc(obj);
+	struct ldlm_res_id      *resname = &osc_env_info(env)->oti_resname;
+
+	LASSERTF(osc->oo_npages == 0,
+		 DFID "still have %lu pages, obj: %p, osc: %p\n",
+		 PFID(lu_object_fid(&obj->co_lu)), osc->oo_npages, obj, osc);
+
+	/* DLM locks don't hold a reference of osc_object so we have to
+	 * clear it before the object is being destroyed. */
+	ostid_build_res_name(&osc->oo_oinfo->loi_oi, resname);
+	ldlm_resource_iterate(osc_export(osc)->exp_obd->obd_namespace, resname,
+			      osc_object_ast_clear, osc);
+	return 0;
+}
+/**
+ * Find any ldlm lock covers the osc object.
+ * \retval 0	not found
+ * \retval 1	find one
+ * \retval < 0	error
+ */
+static int osc_object_find_cbdata(const struct lu_env *env,
+				  struct cl_object *obj, ldlm_iterator_t iter,
+				  void *data)
+{
+	struct ldlm_res_id		res_id;
+	struct obd_device		*obd;
+	int				rc = 0;
+
+	ostid_build_res_name(&cl2osc(obj)->oo_oinfo->loi_oi, &res_id);
+	obd = obj->co_lu.lo_dev->ld_obd;
+	rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, iter, data);
+	if (rc == LDLM_ITER_STOP)
+		return 1;
+
+	if (rc == LDLM_ITER_CONTINUE)
+		return 0;
+
+	return rc;
+}
+
+static int osc_object_fiemap(const struct lu_env *env, struct cl_object *obj,
+			     struct ll_fiemap_info_key *fmkey,
+			     struct fiemap *fiemap, size_t *buflen)
+{
+	struct obd_export *exp = osc_export(cl2osc(obj));
+	struct ldlm_res_id resid;
+	union ldlm_policy_data policy;
+	struct lustre_handle lockh;
+	enum ldlm_mode mode = LCK_MINMODE;
+	struct ptlrpc_request *req;
+	struct fiemap *reply;
+	char *tmp;
+	int rc;
+	ENTRY;
+
+	fmkey->lfik_oa.o_oi = cl2osc(obj)->oo_oinfo->loi_oi;
+	if (!(fmkey->lfik_fiemap.fm_flags & FIEMAP_FLAG_SYNC))
+		goto skip_locking;
+
+	policy.l_extent.start = fmkey->lfik_fiemap.fm_start & PAGE_CACHE_MASK;
+
+	if (OBD_OBJECT_EOF - fmkey->lfik_fiemap.fm_length <=
+	    fmkey->lfik_fiemap.fm_start + PAGE_CACHE_SIZE - 1)
+		policy.l_extent.end = OBD_OBJECT_EOF;
+	else
+		policy.l_extent.end = (fmkey->lfik_fiemap.fm_start +
+				       fmkey->lfik_fiemap.fm_length +
+				       PAGE_CACHE_SIZE - 1) & PAGE_CACHE_MASK;
+
+	ostid_build_res_name(&fmkey->lfik_oa.o_oi, &resid);
+	mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
+			       LDLM_FL_BLOCK_GRANTED | LDLM_FL_LVB_READY,
+			       &resid, LDLM_EXTENT, &policy,
+			       LCK_PR | LCK_PW, &lockh, 0);
+	if (mode) { /* lock is cached on client */
+		if (mode != LCK_PR) {
+			ldlm_lock_addref(&lockh, LCK_PR);
+			ldlm_lock_decref(&lockh, LCK_PW);
+		}
+	} else { /* no cached lock, needs acquire lock on server side */
+		fmkey->lfik_oa.o_valid |= OBD_MD_FLFLAGS;
+		fmkey->lfik_oa.o_flags |= OBD_FL_SRVLOCK;
+	}
+
+skip_locking:
+	req = ptlrpc_request_alloc(class_exp2cliimp(exp),
+				   &RQF_OST_GET_INFO_FIEMAP);
+	if (req == NULL)
+		GOTO(drop_lock, rc = -ENOMEM);
+
+	req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY, RCL_CLIENT,
+			     sizeof(*fmkey));
+	req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL, RCL_CLIENT,
+			     *buflen);
+	req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL, RCL_SERVER,
+			     *buflen);
+
+	rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
+	if (rc != 0) {
+		ptlrpc_request_free(req);
+		GOTO(drop_lock, rc);
+	}
+	tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
+	memcpy(tmp, fmkey, sizeof(*fmkey));
+	tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
+	memcpy(tmp, fiemap, *buflen);
+	ptlrpc_request_set_replen(req);
+
+	rc = ptlrpc_queue_wait(req);
+	if (rc != 0)
+		GOTO(fini_req, rc);
+
+	reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
+	if (reply == NULL)
+		GOTO(fini_req, rc = -EPROTO);
+
+	memcpy(fiemap, reply, *buflen);
+fini_req:
+	ptlrpc_req_finished(req);
+drop_lock:
+	if (mode)
+		ldlm_lock_decref(&lockh, LCK_PR);
+	RETURN(rc);
+}
 
 void osc_object_set_contended(struct osc_object *obj)
 {
@@ -242,39 +375,57 @@ int osc_object_is_contended(struct osc_object *obj)
 }
 
 static const struct cl_object_operations osc_ops = {
-        .coo_page_init = osc_page_init,
-        .coo_lock_init = osc_lock_init,
-        .coo_io_init   = osc_io_init,
-        .coo_attr_get  = osc_attr_get,
-        .coo_attr_set  = osc_attr_set,
-        .coo_glimpse   = osc_object_glimpse
+	.coo_page_init    = osc_page_init,
+	.coo_lock_init    = osc_lock_init,
+	.coo_io_init      = osc_io_init,
+	.coo_attr_get     = osc_attr_get,
+	.coo_attr_update  = osc_attr_update,
+	.coo_glimpse      = osc_object_glimpse,
+	.coo_prune        = osc_object_prune,
+	.coo_find_cbdata  = osc_object_find_cbdata,
+	.coo_fiemap       = osc_object_fiemap,
 };
 
 static const struct lu_object_operations osc_lu_obj_ops = {
-        .loo_object_init      = osc_object_init,
-        .loo_object_delete    = NULL,
-        .loo_object_release   = NULL,
-        .loo_object_free      = osc_object_free,
-        .loo_object_print     = osc_object_print,
-        .loo_object_invariant = NULL
+	.loo_object_init      = osc_object_init,
+	.loo_object_release   = NULL,
+	.loo_object_free      = osc_object_free,
+	.loo_object_print     = osc_object_print,
+	.loo_object_invariant = NULL
 };
 
 struct lu_object *osc_object_alloc(const struct lu_env *env,
-                                   const struct lu_object_header *unused,
-                                   struct lu_device *dev)
+				   const struct lu_object_header *unused,
+				   struct lu_device *dev)
 {
-        struct osc_object *osc;
-        struct lu_object  *obj;
-
-	OBD_SLAB_ALLOC_PTR_GFP(osc, osc_object_kmem, __GFP_IO);
-        if (osc != NULL) {
-                obj = osc2lu(osc);
-                lu_object_init(obj, NULL, dev);
-                osc->oo_cl.co_ops = &osc_ops;
-                obj->lo_ops = &osc_lu_obj_ops;
-        } else
-                obj = NULL;
-        return obj;
+	struct osc_object *osc;
+	struct lu_object  *obj;
+
+	OBD_SLAB_ALLOC_PTR_GFP(osc, osc_object_kmem, GFP_NOFS);
+	if (osc != NULL) {
+		obj = osc2lu(osc);
+		lu_object_init(obj, NULL, dev);
+		osc->oo_cl.co_ops = &osc_ops;
+		obj->lo_ops = &osc_lu_obj_ops;
+	} else
+		obj = NULL;
+	return obj;
+}
+
+int osc_object_invalidate(const struct lu_env *env, struct osc_object *osc)
+{
+	struct l_wait_info lwi = { 0 };
+	ENTRY;
+
+	CDEBUG(D_INODE, "Invalidate osc object: %p, # of active IOs: %d\n",
+	       osc, atomic_read(&osc->oo_nr_ios));
+
+	l_wait_event(osc->oo_io_waitq, atomic_read(&osc->oo_nr_ios) == 0, &lwi);
+
+	/* Discard all pages of this object. */
+	osc_cache_truncate_start(env, osc, 0, NULL);
+
+	RETURN(0);
 }
 
 /** @} osc */