Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757994AbcLCBWd (ORCPT ); Fri, 2 Dec 2016 20:22:33 -0500 Received: from [160.91.203.10] ([160.91.203.10]:35362 "EHLO smtp1.ccs.ornl.gov" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754136AbcLCBW3 (ORCPT ); Fri, 2 Dec 2016 20:22:29 -0500 From: James Simmons To: Greg Kroah-Hartman , devel@driverdev.osuosl.org, Andreas Dilger , Oleg Drokin Cc: Linux Kernel Mailing List , Lustre Development List , Jinshan Xiong , James Simmons Subject: [PATCH 20/22] staging: lustre: osc: set lock data for readahead lock Date: Fri, 2 Dec 2016 19:53:27 -0500 Message-Id: <1480726409-20350-21-git-send-email-jsimmons@infradead.org> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1480726409-20350-1-git-send-email-jsimmons@infradead.org> References: <1480726409-20350-1-git-send-email-jsimmons@infradead.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5259 Lines: 142 From: Jinshan Xiong If osc_io_readahead() finds a lock that belongs to the previous instance of osc_object, the lock data pointer will be null. It has to instantiate with new instance otherwise those pages won't be destroyed at lock cancel, and then finally hit the assertion in osc_req_attr_set(). This patch revised dlmlock_at_pgoff() to call osc_match_base() to find caching locks for readahead. And new osc_object will be set to the lock if it doesn't have one yet. Signed-off-by: Jinshan Xiong Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8005 Reviewed-on: http://review.whamcloud.com/19453 Reviewed-by: Bobi Jam Reviewed-by: John L. Hammond Reviewed-by: Oleg Drokin Signed-off-by: James Simmons --- drivers/staging/lustre/lustre/osc/osc_io.c | 1 + drivers/staging/lustre/lustre/osc/osc_lock.c | 7 +-- drivers/staging/lustre/lustre/osc/osc_request.c | 49 ++++++---------------- 3 files changed, 18 insertions(+), 39 deletions(-) diff --git a/drivers/staging/lustre/lustre/osc/osc_io.c b/drivers/staging/lustre/lustre/osc/osc_io.c index 369761f..d96f4f2 100644 --- a/drivers/staging/lustre/lustre/osc/osc_io.c +++ b/drivers/staging/lustre/lustre/osc/osc_io.c @@ -88,6 +88,7 @@ static int osc_io_read_ahead(const struct lu_env *env, dlmlock = osc_dlmlock_at_pgoff(env, osc, start, 0); if (dlmlock) { + LASSERT(dlmlock->l_ast_data == osc); if (dlmlock->l_req_mode != LCK_PR) { struct lustre_handle lockh; diff --git a/drivers/staging/lustre/lustre/osc/osc_lock.c b/drivers/staging/lustre/lustre/osc/osc_lock.c index 130460d..001fe75 100644 --- a/drivers/staging/lustre/lustre/osc/osc_lock.c +++ b/drivers/staging/lustre/lustre/osc/osc_lock.c @@ -1205,10 +1205,9 @@ struct ldlm_lock *osc_dlmlock_at_pgoff(const struct lu_env *env, * with a uniq gid and it conflicts with all other lock modes too */ again: - mode = ldlm_lock_match(osc_export(obj)->exp_obd->obd_namespace, - flags, resname, LDLM_EXTENT, policy, - LCK_PR | LCK_PW | LCK_GROUP, &lockh, - dap_flags & OSC_DAP_FL_CANCELING); + mode = osc_match_base(osc_export(obj), resname, LDLM_EXTENT, policy, + LCK_PR | LCK_PW | LCK_GROUP, &flags, obj, &lockh, + dap_flags & OSC_DAP_FL_CANCELING); if (mode != 0) { lock = ldlm_handle2lock(&lockh); /* RACE: the lock is cancelled so let's try again */ diff --git a/drivers/staging/lustre/lustre/osc/osc_request.c b/drivers/staging/lustre/lustre/osc/osc_request.c index bc698d3..0977127 100644 --- a/drivers/staging/lustre/lustre/osc/osc_request.c +++ b/drivers/staging/lustre/lustre/osc/osc_request.c @@ -1813,16 +1813,11 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli, return rc; } -static int osc_set_lock_data_with_check(struct ldlm_lock *lock, - struct ldlm_enqueue_info *einfo) +static int osc_set_lock_data(struct ldlm_lock *lock, void *data) { - void *data = einfo->ei_cbdata; int set = 0; - LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl); - LASSERT(lock->l_resource->lr_type == einfo->ei_type); - LASSERT(lock->l_completion_ast == einfo->ei_cb_cp); - LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl); + LASSERT(lock); lock_res_and_lock(lock); @@ -1836,21 +1831,6 @@ static int osc_set_lock_data_with_check(struct ldlm_lock *lock, return set; } -static int osc_set_data_with_check(struct lustre_handle *lockh, - struct ldlm_enqueue_info *einfo) -{ - struct ldlm_lock *lock = ldlm_handle2lock(lockh); - int set = 0; - - if (lock) { - set = osc_set_lock_data_with_check(lock, einfo); - LDLM_LOCK_PUT(lock); - } else - CERROR("lockh %p, data %p - client evicted?\n", - lockh, einfo->ei_cbdata); - return set; -} - static int osc_enqueue_fini(struct ptlrpc_request *req, osc_enqueue_upcall_f upcall, void *cookie, struct lustre_handle *lockh, enum ldlm_mode mode, @@ -2016,7 +1996,7 @@ int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id, ldlm_lock_decref(&lockh, mode); LDLM_LOCK_PUT(matched); return -ECANCELED; - } else if (osc_set_lock_data_with_check(matched, einfo)) { + } else if (osc_set_lock_data(matched, einfo->ei_cbdata)) { *flags |= LDLM_FL_LVB_READY; /* We already have a lock, and it's referenced. */ (*upcall)(cookie, &lockh, ELDLM_LOCK_MATCHED); @@ -2128,19 +2108,18 @@ int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id, rc |= LCK_PW; rc = ldlm_lock_match(obd->obd_namespace, lflags, res_id, type, policy, rc, lockh, unref); - if (rc) { - if (data) { - if (!osc_set_data_with_check(lockh, data)) { - if (!(lflags & LDLM_FL_TEST_LOCK)) - ldlm_lock_decref(lockh, rc); - return 0; - } - } - if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) { - ldlm_lock_addref(lockh, LCK_PR); - ldlm_lock_decref(lockh, LCK_PW); - } + if (!rc || lflags & LDLM_FL_TEST_LOCK) return rc; + + if (data) { + struct ldlm_lock *lock = ldlm_handle2lock(lockh); + + LASSERT(lock); + if (!osc_set_lock_data(lock, data)) { + ldlm_lock_decref(lockh, rc); + rc = 0; + } + LDLM_LOCK_PUT(lock); } return rc; } -- 1.7.1