/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Lustre Lite routines to issue a secondary close after writeback
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Copyright (c) 2001-2003 Cluster File Systems, Inc.
+ * 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.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * 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).
*
- * 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.
+ * 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 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.
+ * 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.
*
- * 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.
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * 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"
+#ifdef HAVE_CLOSE_THREAD
/* record that a write is in flight */
void llap_write_pending(struct inode *inode, struct ll_async_page *llap)
{
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);
+ list_add(&llap->llap_pending_write, &lli->lli_pending_write_llaps);
spin_unlock(&lli->lli_lock);
- EXIT;
}
/* record that a write has completed */
-int llap_write_complete(struct inode *inode, struct ll_async_page *llap)
+void llap_write_complete(struct inode *inode, struct ll_async_page *llap)
+{
+ struct ll_inode_info *lli = ll_i2info(inode);
+ spin_lock(&lli->lli_lock);
+ list_del_init(&llap->llap_pending_write);
+ spin_unlock(&lli->lli_lock);
+}
+
+void ll_open_complete(struct inode *inode)
+{
+ struct ll_inode_info *lli = ll_i2info(inode);
+ spin_lock(&lli->lli_lock);
+ lli->lli_send_done_writing = 0;
+ spin_unlock(&lli->lli_lock);
+}
+
+/* if we close with writes in flight then we want the completion or cancelation
+ * of those writes to send a DONE_WRITING rpc to the MDS */
+int ll_is_inode_dirty(struct inode *inode)
{
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);
+ if (!list_empty(&lli->lli_pending_write_llaps))
rc = 1;
- }
spin_unlock(&lli->lli_lock);
RETURN(rc);
}
-/* Queue DONE_WRITING if
- * - done writing is allowed;
- * - inode has no no dirty pages; */
-void ll_queue_done_writing(struct inode *inode, unsigned long flags)
+void ll_try_done_writing(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
-
+ struct ll_close_queue *lcq = ll_i2sbi(inode)->ll_lcq;
+
spin_lock(&lli->lli_lock);
- lli->lli_flags |= flags;
-
- if ((lli->lli_flags & LLIF_DONE_WRITING) &&
+
+ if (lli->lli_send_done_writing &&
list_empty(&lli->lli_pending_write_llaps)) {
- struct ll_close_queue *lcq = ll_i2sbi(inode)->ll_lcq;
- /* DONE_WRITING is allowed and inode has no dirty page. */
spin_lock(&lcq->lcq_lock);
- LASSERT(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);
- wake_up(&lcq->lcq_waitq);
+ if (list_empty(&lli->lli_close_item)) {
+ CDEBUG(D_INODE, "adding inode %lu/%u to close list\n",
+ inode->i_ino, inode->i_generation);
+ igrab(inode);
+ list_add_tail(&lli->lli_close_item, &lcq->lcq_list);
+ wake_up(&lcq->lcq_waitq);
+ }
spin_unlock(&lcq->lcq_lock);
}
+
spin_unlock(&lli->lli_lock);
}
-/* 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)
+/* The MDS needs us to get the real file attributes, then send a DONE_WRITING */
+void ll_queue_done_writing(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
ENTRY;
spin_lock(&lli->lli_lock);
- if (!(list_empty(&lli->lli_pending_write_llaps)) &&
- !(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;
- }
-
- CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID"\n",
- op_data->ioepoch, PFID(&lli->lli_fid));
- op_data->flags |= MF_EPOCH_CLOSE;
-
- if (flags & LLIF_DONE_WRITING) {
- LASSERT(lli->lli_flags & LLIF_SOM_DIRTY);
- *och = lli->lli_pending_och;
- lli->lli_pending_och = NULL;
- lli->lli_flags &= ~(LLIF_DONE_WRITING | LLIF_EPOCH_PENDING |
- LLIF_EPOCH_PENDING);
- } 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;
- }
-
- /* There is already 1 pending DONE_WRITE, do not create another
- * one -- close epoch with no attribute change. */
- if (lli->lli_flags & LLIF_EPOCH_PENDING) {
- spin_unlock(&lli->lli_lock);
- goto out;
- }
- }
-
+ lli->lli_send_done_writing = 1;
spin_unlock(&lli->lli_lock);
- op_data->flags |= MF_SOM_CHANGE;
-
- /* Check if Size-on-MDS attributes are valid. */
- LASSERT(!(lli->lli_flags & LLIF_MDS_SIZE_LOCK));
- if (!ll_local_size(inode)) {
- /* Send Size-on-MDS Attributes if valid. */
- op_data->attr.ia_valid |= ATTR_MTIME_SET | ATTR_CTIME_SET |
- ATTR_SIZE | ATTR_BLOCKS;
- }
-out:
+
+ ll_try_done_writing(inode);
EXIT;
}
-int ll_sizeonmds_update(struct inode *inode, struct lustre_handle *fh)
+/* If we know the file size and have the cookies:
+ * - send a DONE_WRITING rpc
+ *
+ * Otherwise:
+ * - get a whole-file lock
+ * - get the authoritative size and all cookies with GETATTRs
+ * - send a DONE_WRITING rpc
+ */
+static void ll_close_done_writing(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
- struct md_op_data *op_data;
- struct obdo *oa;
- int rc;
+ ldlm_policy_data_t policy = { .l_extent = {0, OBD_OBJECT_EOF } };
+ struct lustre_handle lockh = { 0 };
+ struct obdo obdo;
+ struct mdc_op_data data = { { 0 } };
+ obd_flag valid;
+ int rc, ast_flags = 0;
ENTRY;
-
- LASSERT(!(lli->lli_flags & LLIF_MDS_SIZE_LOCK));
-
- oa = obdo_alloc();
- OBD_ALLOC_PTR(op_data);
- if (!oa || !op_data) {
- CERROR("can't allocate memory for Size-on-MDS update.\n");
- RETURN(-ENOMEM);
+
+ memset(&obdo, 0, sizeof(obdo));
+ if (test_bit(LLI_F_HAVE_OST_SIZE_LOCK, &lli->lli_flags))
+ goto rpc;
+
+ rc = ll_extent_lock(NULL, inode, lli->lli_smd, LCK_PW, &policy, &lockh,
+ ast_flags);
+ if (rc != 0) {
+ CERROR("lock acquisition failed (%d): unable to send "
+ "DONE_WRITING for inode %lu/%u\n", rc, inode->i_ino,
+ inode->i_generation);
+ GOTO(out, rc);
}
- rc = ll_inode_getattr(inode, oa);
+
+ rc = ll_lsm_getattr(ll_i2obdexp(inode), lli->lli_smd, &obdo);
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);
+ CERROR("inode_getattr failed (%d): unable to send DONE_WRITING "
+ "for inode %lu/%u\n", rc, inode->i_ino,
+ inode->i_generation);
+ ll_extent_unlock(NULL, inode, lli->lli_smd, LCK_PW, &lockh);
GOTO(out, rc);
}
- 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->handle, fh, sizeof(*fh));
-
- op_data->ioepoch = lli->lli_ioepoch;
- op_data->flags |= MF_SOM_CHANGE;
-
- 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;
-}
-/* Send a DONE_WRITING rpc, pack Size-on-MDS attributes into it, if possible */
-static void ll_done_writing(struct inode *inode)
-{
- struct obd_client_handle *och = NULL;
- struct md_op_data *op_data;
- int rc;
- ENTRY;
+ obdo_refresh_inode(inode, &obdo, valid);
- OBD_ALLOC_PTR(op_data);
- if (op_data == NULL) {
- CERROR("can't allocate op_data\n");
- EXIT;
- return;
- }
+ CDEBUG(D_INODE, "objid "LPX64" size %Lu, blocks %lu, blksize %lu\n",
+ lli->lli_smd->lsm_object_id, i_size_read(inode), inode->i_blocks,
+ 1<<inode->i_blkbits);
- ll_epoch_close(inode, op_data, &och, LLIF_DONE_WRITING);
- ll_pack_inode2opdata(inode, op_data, &och->och_fh);
-
- rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, och);
- ll_finish_md_op_data(op_data);
- if (rc == -EAGAIN) {
- /* 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);
- } else if (rc) {
- CERROR("inode %lu mdc done_writing failed: rc = %d\n",
- inode->i_ino, rc);
- }
- OBD_FREE_PTR(och);
- EXIT;
+ set_bit(LLI_F_HAVE_OST_SIZE_LOCK, &lli->lli_flags);
+
+ rc = ll_extent_unlock(NULL, inode, lli->lli_smd, LCK_PW, &lockh);
+ if (rc != ELDLM_OK)
+ CERROR("unlock failed (%d)? proceeding anyways...\n", rc);
+
+ rpc:
+ obdo.o_id = inode->i_ino;
+ obdo.o_size = i_size_read(inode);
+ obdo.o_blocks = inode->i_blocks;
+ obdo.o_valid = OBD_MD_FLID | OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
+
+ ll_inode2fid(&data.fid1, inode);
+ rc = mdc_done_writing(ll_i2sbi(inode)->ll_mdc_exp, &data, &obdo);
+ out:
}
+
static struct ll_inode_info *ll_close_next_lli(struct ll_close_queue *lcq)
{
struct ll_inode_info *lli = NULL;
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 (lcq->lcq_list.next == NULL)
lli = ERR_PTR(-1);
+ else if (!list_empty(&lcq->lcq_list)) {
+ lli = list_entry(lcq->lcq_list.next, struct ll_inode_info,
+ lli_close_item);
+ list_del(&lli->lli_close_item);
+ }
spin_unlock(&lcq->lcq_lock);
return lli;
}
+#else
+static struct ll_inode_info *ll_close_next_lli(struct ll_close_queue *lcq)
+{
+ if (lcq->lcq_list.next == NULL)
+ return ERR_PTR(-1);
+
+ return NULL;
+}
+#endif
static int ll_close_thread(void *arg)
{
while (1) {
struct l_wait_info lwi = { 0 };
struct ll_inode_info *lli;
- struct inode *inode;
+ //struct inode *inode;
l_wait_event_exclusive(lcq->lcq_waitq,
(lli = ll_close_next_lli(lcq)) != NULL,
if (IS_ERR(lli))
break;
- inode = ll_info2i(lli);
- ll_done_writing(inode);
- iput(inode);
+ //inode = ll_info2i(lli);
+ //ll_close_done_writing(inode);
+ //iput(inode);
}
complete(&lcq->lcq_comp);
struct ll_close_queue *lcq;
pid_t pid;
+ OBD_FAIL_RETURN(OBD_FAIL_LDLM_CLOSE_THREAD, -EINTR);
OBD_ALLOC(lcq, sizeof(*lcq));
if (lcq == NULL)
return -ENOMEM;
spin_lock_init(&lcq->lcq_lock);
- INIT_LIST_HEAD(&lcq->lcq_head);
+ INIT_LIST_HEAD(&lcq->lcq_list);
init_waitqueue_head(&lcq->lcq_waitq);
init_completion(&lcq->lcq_comp);
void ll_close_thread_shutdown(struct ll_close_queue *lcq)
{
init_completion(&lcq->lcq_comp);
- atomic_inc(&lcq->lcq_stop);
+ lcq->lcq_list.next = NULL;
wake_up(&lcq->lcq_waitq);
wait_for_completion(&lcq->lcq_comp);
OBD_FREE(lcq, sizeof(*lcq));
git://git.whamcloud.com / fs / lustre-release.git / blobdiff