-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Lustre Lite routines to issue a secondary close after writeback
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Copyright (c) 2001-2003 Cluster File Systems, Inc.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * This file is part of Lustre, http://www.lustre.org.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright (c) 2011, 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/llite/llite_close.c
+ *
+ * Lustre Lite routines to issue a secondary close after writeback
*/
#include <linux/module.h>
#define DEBUG_SUBSYSTEM S_LLITE
-//#include <lustre_mdc.h>
#include <lustre_lite.h>
#include "llite_internal.h"
-/* record that a write is in flight */
-void llap_write_pending(struct inode *inode, struct ll_async_page *llap)
+/** records that a write is in flight */
+void vvp_write_pending(struct ccc_object *club, struct ccc_page *page)
{
- struct ll_inode_info *lli = ll_i2info(inode);
-
- ENTRY;
- spin_lock(&lli->lli_lock);
- lli->lli_flags |= LLIF_SOM_DIRTY;
- if (llap && list_empty(&llap->llap_pending_write))
- list_add(&llap->llap_pending_write,
- &lli->lli_pending_write_llaps);
- spin_unlock(&lli->lli_lock);
- EXIT;
+ struct ll_inode_info *lli = ll_i2info(club->cob_inode);
+
+ ENTRY;
+ spin_lock(&lli->lli_lock);
+ lli->lli_flags |= LLIF_SOM_DIRTY;
+ if (page != NULL && cfs_list_empty(&page->cpg_pending_linkage))
+ cfs_list_add(&page->cpg_pending_linkage,
+ &club->cob_pending_list);
+ spin_unlock(&lli->lli_lock);
+ EXIT;
}
-/* record that a write has completed */
-int llap_write_complete(struct inode *inode, struct ll_async_page *llap)
+/** records that a write has completed */
+void vvp_write_complete(struct ccc_object *club, struct ccc_page *page)
{
- struct ll_inode_info *lli = ll_i2info(inode);
- int rc = 0;
-
- ENTRY;
- spin_lock(&lli->lli_lock);
- if (llap && !list_empty(&llap->llap_pending_write)) {
- list_del_init(&llap->llap_pending_write);
- rc = 1;
- }
- spin_unlock(&lli->lli_lock);
- RETURN(rc);
+ struct ll_inode_info *lli = ll_i2info(club->cob_inode);
+ int rc = 0;
+
+ ENTRY;
+ spin_lock(&lli->lli_lock);
+ if (page != NULL && !cfs_list_empty(&page->cpg_pending_linkage)) {
+ cfs_list_del_init(&page->cpg_pending_linkage);
+ rc = 1;
+ }
+ spin_unlock(&lli->lli_lock);
+ if (rc)
+ ll_queue_done_writing(club->cob_inode, 0);
+ EXIT;
}
-/* Queue DONE_WRITING if
+/** Queues DONE_WRITING if
* - done writing is allowed;
* - inode has no no dirty pages; */
void ll_queue_done_writing(struct inode *inode, unsigned long flags)
{
- struct ll_inode_info *lli = ll_i2info(inode);
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct ccc_object *club = cl2ccc(ll_i2info(inode)->lli_clob);
+ ENTRY;
- spin_lock(&lli->lli_lock);
+ spin_lock(&lli->lli_lock);
lli->lli_flags |= flags;
if ((lli->lli_flags & LLIF_DONE_WRITING) &&
- list_empty(&lli->lli_pending_write_llaps)) {
+ cfs_list_empty(&club->cob_pending_list)) {
struct ll_close_queue *lcq = ll_i2sbi(inode)->ll_lcq;
if (lli->lli_flags & LLIF_MDS_SIZE_LOCK)
- CWARN("ino %lu/%u(flags %lu) som valid it just after "
- "recovery\n",
- inode->i_ino, inode->i_generation,
- lli->lli_flags);
+ CWARN("ino %lu/%u(flags %u) som valid it just after "
+ "recovery\n",
+ inode->i_ino, inode->i_generation,
+ lli->lli_flags);
/* DONE_WRITING is allowed and inode has no dirty page. */
- spin_lock(&lcq->lcq_lock);
+ spin_lock(&lcq->lcq_lock);
- LASSERT(list_empty(&lli->lli_close_list));
+ LASSERT(cfs_list_empty(&lli->lli_close_list));
CDEBUG(D_INODE, "adding inode %lu/%u to close list\n",
inode->i_ino, inode->i_generation);
- list_add_tail(&lli->lli_close_list, &lcq->lcq_head);
+ cfs_list_add_tail(&lli->lli_close_list, &lcq->lcq_head);
/* Avoid a concurrent insertion into the close thread queue:
* an inode is already in the close thread, open(), write(),
* it. */
lli->lli_flags &= ~LLIF_DONE_WRITING;
- wake_up(&lcq->lcq_waitq);
- spin_unlock(&lcq->lcq_lock);
- }
- spin_unlock(&lli->lli_lock);
+ cfs_waitq_signal(&lcq->lcq_waitq);
+ spin_unlock(&lcq->lcq_lock);
+ }
+ spin_unlock(&lli->lli_lock);
+ EXIT;
}
-/* Close epoch and send Size-on-MDS attribute update if possible.
- * Call this under @lli->lli_lock spinlock. */
-void ll_epoch_close(struct inode *inode, struct md_op_data *op_data,
- struct obd_client_handle **och, unsigned long flags)
+/** Pack SOM attributes info @opdata for CLOSE, DONE_WRITING rpc. */
+void ll_done_writing_attr(struct inode *inode, struct md_op_data *op_data)
{
struct ll_inode_info *lli = ll_i2info(inode);
ENTRY;
- spin_lock(&lli->lli_lock);
- if (!(list_empty(&lli->lli_pending_write_llaps))) {
- if (!(lli->lli_flags & LLIF_EPOCH_PENDING)) {
- LASSERT(*och != NULL);
- LASSERT(lli->lli_pending_och == NULL);
- /* Inode is dirty and there is no pending write done
- * request yet, DONE_WRITE is to be sent later. */
- lli->lli_flags |= LLIF_EPOCH_PENDING;
- lli->lli_pending_och = *och;
- spin_unlock(&lli->lli_lock);
+ op_data->op_flags |= MF_SOM_CHANGE;
+ /* Check if Size-on-MDS attributes are valid. */
+ if (lli->lli_flags & LLIF_MDS_SIZE_LOCK)
+ CERROR("ino %lu/%u(flags %u) som valid it just after "
+ "recovery\n", inode->i_ino, inode->i_generation,
+ lli->lli_flags);
+
+ if (!cl_local_size(inode)) {
+ /* Send Size-on-MDS Attributes if valid. */
+ op_data->op_attr.ia_valid |= ATTR_MTIME_SET | ATTR_CTIME_SET |
+ ATTR_ATIME_SET | ATTR_SIZE | ATTR_BLOCKS;
+ }
+ EXIT;
+}
+
+/** Closes ioepoch and packs Size-on-MDS attribute if needed into @op_data. */
+void ll_ioepoch_close(struct inode *inode, struct md_op_data *op_data,
+ struct obd_client_handle **och, unsigned long flags)
+{
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct ccc_object *club = cl2ccc(ll_i2info(inode)->lli_clob);
+ ENTRY;
+
+ spin_lock(&lli->lli_lock);
+ if (!(cfs_list_empty(&club->cob_pending_list))) {
+ if (!(lli->lli_flags & LLIF_EPOCH_PENDING)) {
+ LASSERT(*och != NULL);
+ LASSERT(lli->lli_pending_och == NULL);
+ /* Inode is dirty and there is no pending write done
+ * request yet, DONE_WRITE is to be sent later. */
+ lli->lli_flags |= LLIF_EPOCH_PENDING;
+ lli->lli_pending_och = *och;
+ spin_unlock(&lli->lli_lock);
inode = igrab(inode);
LASSERT(inode);
GOTO(out, 0);
- }
+ }
if (flags & LLIF_DONE_WRITING) {
/* Some pages are still dirty, it is early to send
* DONE_WRITE. Wait untill all pages will be flushed
* and try DONE_WRITE again later. */
LASSERT(!(lli->lli_flags & LLIF_DONE_WRITING));
lli->lli_flags |= LLIF_DONE_WRITING;
- spin_unlock(&lli->lli_lock);
+ spin_unlock(&lli->lli_lock);
inode = igrab(inode);
LASSERT(inode);
} else {
/* Pack Size-on-MDS inode attributes only if they has changed */
if (!(lli->lli_flags & LLIF_SOM_DIRTY)) {
- spin_unlock(&lli->lli_lock);
- GOTO(out, 0);
- }
-
- /* There is a pending DONE_WRITE -- close epoch with no
- * attribute change. */
- if (lli->lli_flags & LLIF_EPOCH_PENDING) {
- spin_unlock(&lli->lli_lock);
- GOTO(out, 0);
- }
- }
-
- LASSERT(list_empty(&lli->lli_pending_write_llaps));
- lli->lli_flags &= ~LLIF_SOM_DIRTY;
- spin_unlock(&lli->lli_lock);
- op_data->op_flags |= MF_SOM_CHANGE;
-
- /* Check if Size-on-MDS attributes are valid. */
- if (lli->lli_flags & LLIF_MDS_SIZE_LOCK)
- CWARN("ino %lu/%u(flags %lu) som valid it just after "
- "recovery\n",
- inode->i_ino, inode->i_generation, lli->lli_flags);
-
- if (!ll_local_size(inode)) {
- /* Send Size-on-MDS Attributes if valid. Atime is sent along
- * with all the attributes. */
- op_data->op_attr.ia_valid |= ATTR_MTIME_SET | ATTR_CTIME_SET |
- ATTR_ATIME_SET | ATTR_SIZE | ATTR_BLOCKS;
- }
- EXIT;
+ spin_unlock(&lli->lli_lock);
+ GOTO(out, 0);
+ }
+
+ /* There is a pending DONE_WRITE -- close epoch with no
+ * attribute change. */
+ if (lli->lli_flags & LLIF_EPOCH_PENDING) {
+ spin_unlock(&lli->lli_lock);
+ GOTO(out, 0);
+ }
+ }
+
+ LASSERT(cfs_list_empty(&club->cob_pending_list));
+ lli->lli_flags &= ~LLIF_SOM_DIRTY;
+ spin_unlock(&lli->lli_lock);
+ ll_done_writing_attr(inode, op_data);
+
+ EXIT;
out:
- return;
+ return;
}
-int ll_sizeonmds_update(struct inode *inode, struct lustre_handle *fh,
- __u64 ioepoch)
+/**
+ * Cliens updates SOM attributes on MDS (including llog cookies):
+ * obd_getattr with no lock and md_setattr.
+ */
+int ll_som_update(struct inode *inode, struct md_op_data *op_data)
{
struct ll_inode_info *lli = ll_i2info(inode);
- struct md_op_data *op_data;
+ struct ptlrpc_request *request = NULL;
+ __u32 old_flags;
struct obdo *oa;
int rc;
ENTRY;
-
- /* LASSERT(!(lli->lli_flags & LLIF_MDS_SIZE_LOCK)); */
- /* After recovery that can be valid. */
+
+ LASSERT(op_data != NULL);
if (lli->lli_flags & LLIF_MDS_SIZE_LOCK)
- CWARN("ino %lu/%u(flags %lu) som valid it just after "
- "recovery\n", inode->i_ino, inode->i_generation,
- lli->lli_flags);
+ CERROR("ino %lu/%u(flags %u) som valid it just after "
+ "recovery\n", inode->i_ino, inode->i_generation,
+ lli->lli_flags);
OBDO_ALLOC(oa);
- OBD_ALLOC_PTR(op_data);
- if (!oa || !op_data) {
+ if (!oa) {
CERROR("can't allocate memory for Size-on-MDS update.\n");
RETURN(-ENOMEM);
}
- rc = ll_inode_getattr(inode, oa);
- if (rc) {
- CERROR("inode_getattr failed (%d): unable to send a "
- "Size-on-MDS attribute update for inode %lu/%u\n",
- rc, inode->i_ino, inode->i_generation);
- GOTO(out, rc);
+
+ old_flags = op_data->op_flags;
+ op_data->op_flags = MF_SOM_CHANGE;
+
+ /* If inode is already in another epoch, skip getattr from OSTs. */
+ if (lli->lli_ioepoch == op_data->op_ioepoch) {
+ rc = ll_inode_getattr(inode, oa, op_data->op_ioepoch,
+ old_flags & MF_GETATTR_LOCK);
+ if (rc) {
+ oa->o_valid = 0;
+ if (rc != -ENOENT)
+ CERROR("inode_getattr failed (%d): unable to "
+ "send a Size-on-MDS attribute update "
+ "for inode %lu/%u\n", rc, inode->i_ino,
+ inode->i_generation);
+ } else {
+ CDEBUG(D_INODE, "Size-on-MDS update on "DFID"\n",
+ PFID(&lli->lli_fid));
+ }
+ /* Install attributes into op_data. */
+ md_from_obdo(op_data, oa, oa->o_valid);
}
- CDEBUG(D_INODE, "Size-on-MDS update on "DFID"\n", PFID(&lli->lli_fid));
- md_from_obdo(op_data, oa, oa->o_valid);
- memcpy(&op_data->op_handle, fh, sizeof(*fh));
+ rc = md_setattr(ll_i2sbi(inode)->ll_md_exp, op_data,
+ NULL, 0, NULL, 0, &request, NULL);
+ ptlrpc_req_finished(request);
- op_data->op_ioepoch = ioepoch;
- op_data->op_flags |= MF_SOM_CHANGE;
+ OBDO_FREE(oa);
+ RETURN(rc);
+}
- rc = ll_md_setattr(inode, op_data);
- EXIT;
-out:
- if (oa)
- OBDO_FREE(oa);
- if (op_data)
- ll_finish_md_op_data(op_data);
- return rc;
+/**
+ * Closes the ioepoch and packs all the attributes into @op_data for
+ * DONE_WRITING rpc.
+ */
+static void ll_prepare_done_writing(struct inode *inode,
+ struct md_op_data *op_data,
+ struct obd_client_handle **och)
+{
+ ll_ioepoch_close(inode, op_data, och, LLIF_DONE_WRITING);
+ /* If there is no @och, we do not do D_W yet. */
+ if (*och == NULL)
+ return;
+
+ ll_pack_inode2opdata(inode, op_data, &(*och)->och_fh);
+ ll_prep_md_op_data(op_data, inode, NULL, NULL,
+ 0, 0, LUSTRE_OPC_ANY, NULL);
}
-/* Send a DONE_WRITING rpc, pack Size-on-MDS attributes into it, if possible */
+/** Send a DONE_WRITING rpc. */
static void ll_done_writing(struct inode *inode)
{
struct obd_client_handle *och = NULL;
int rc;
ENTRY;
- LASSERT(ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM);
-
+ LASSERT(exp_connect_som(ll_i2mdexp(inode)));
+
OBD_ALLOC_PTR(op_data);
if (op_data == NULL) {
CERROR("can't allocate op_data\n");
return;
}
- ll_epoch_close(inode, op_data, &och, LLIF_DONE_WRITING);
+ ll_prepare_done_writing(inode, op_data, &och);
/* If there is no @och, we do not do D_W yet. */
if (och == NULL)
GOTO(out, 0);
-
- ll_pack_inode2opdata(inode, op_data, &och->och_fh);
- rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, och);
+ rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, NULL);
if (rc == -EAGAIN) {
- /* MDS has instructed us to obtain Size-on-MDS attribute from
+ /* MDS has instructed us to obtain Size-on-MDS attribute from
* OSTs and send setattr to back to MDS. */
- rc = ll_sizeonmds_update(inode, &och->och_fh,
- op_data->op_ioepoch);
+ rc = ll_som_update(inode, op_data);
} else if (rc) {
CERROR("inode %lu mdc done_writing failed: rc = %d\n",
inode->i_ino, rc);
static struct ll_inode_info *ll_close_next_lli(struct ll_close_queue *lcq)
{
- struct ll_inode_info *lli = NULL;
+ struct ll_inode_info *lli = NULL;
- spin_lock(&lcq->lcq_lock);
+ spin_lock(&lcq->lcq_lock);
- if (!list_empty(&lcq->lcq_head)) {
- lli = list_entry(lcq->lcq_head.next, struct ll_inode_info,
- lli_close_list);
- list_del_init(&lli->lli_close_list);
- } else if (atomic_read(&lcq->lcq_stop))
+ if (!cfs_list_empty(&lcq->lcq_head)) {
+ lli = cfs_list_entry(lcq->lcq_head.next, struct ll_inode_info,
+ lli_close_list);
+ cfs_list_del_init(&lli->lli_close_list);
+ } else if (cfs_atomic_read(&lcq->lcq_stop))
lli = ERR_PTR(-EALREADY);
- spin_unlock(&lcq->lcq_lock);
- return lli;
+ spin_unlock(&lcq->lcq_lock);
+ return lli;
}
static int ll_close_thread(void *arg)
snprintf(name, sizeof(name) - 1, "ll_close");
cfs_daemonize(name);
}
-
- complete(&lcq->lcq_comp);
+
+ complete(&lcq->lcq_comp);
while (1) {
struct l_wait_info lwi = { 0 };
}
CDEBUG(D_INFO, "ll_close exiting\n");
- complete(&lcq->lcq_comp);
- RETURN(0);
+ complete(&lcq->lcq_comp);
+ RETURN(0);
}
int ll_close_thread_start(struct ll_close_queue **lcq_ret)
struct ll_close_queue *lcq;
pid_t pid;
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CLOSE_THREAD))
+ return -EINTR;
+
OBD_ALLOC(lcq, sizeof(*lcq));
if (lcq == NULL)
return -ENOMEM;
- spin_lock_init(&lcq->lcq_lock);
- INIT_LIST_HEAD(&lcq->lcq_head);
- init_waitqueue_head(&lcq->lcq_waitq);
- init_completion(&lcq->lcq_comp);
+ spin_lock_init(&lcq->lcq_lock);
+ CFS_INIT_LIST_HEAD(&lcq->lcq_head);
+ cfs_waitq_init(&lcq->lcq_waitq);
+ init_completion(&lcq->lcq_comp);
- pid = kernel_thread(ll_close_thread, lcq, 0);
- if (pid < 0) {
- OBD_FREE(lcq, sizeof(*lcq));
- return pid;
- }
+ pid = cfs_create_thread(ll_close_thread, lcq, 0);
+ if (pid < 0) {
+ OBD_FREE(lcq, sizeof(*lcq));
+ return pid;
+ }
- wait_for_completion(&lcq->lcq_comp);
- *lcq_ret = lcq;
- return 0;
+ wait_for_completion(&lcq->lcq_comp);
+ *lcq_ret = lcq;
+ return 0;
}
void ll_close_thread_shutdown(struct ll_close_queue *lcq)
{
- init_completion(&lcq->lcq_comp);
- atomic_inc(&lcq->lcq_stop);
- wake_up(&lcq->lcq_waitq);
- wait_for_completion(&lcq->lcq_comp);
- OBD_FREE(lcq, sizeof(*lcq));
+ init_completion(&lcq->lcq_comp);
+ cfs_atomic_inc(&lcq->lcq_stop);
+ cfs_waitq_signal(&lcq->lcq_waitq);
+ wait_for_completion(&lcq->lcq_comp);
+ OBD_FREE(lcq, sizeof(*lcq));
}
-
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff