-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2001 Cluster File Systems, Inc. <info@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * 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.
*
- * 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.
+ * 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 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.
+ * 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
*
- * 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.
+ * 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.
*
- * Filesystem interface helper.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/include/linux/lustre_fsfilt.h
*
+ * Filesystem interface helper.
*/
+#ifndef _LINUX_LUSTRE_FSFILT_H
+#define _LINUX_LUSTRE_FSFILT_H
+
#ifndef _LUSTRE_FSFILT_H
-#define _LUSTRE_FSFILT_H
+#error Do not #include this file directly. #include <lustre_fsfilt.h> instead
+#endif
#ifdef __KERNEL__
-#include <linux/obd.h>
-#include <linux/fs.h>
+#include <obd.h>
+#include <obd_class.h>
typedef void (*fsfilt_cb_t)(struct obd_device *obd, __u64 last_rcvd,
void *data, int error);
-struct fsfilt_objinfo {
- struct dentry *fso_dentry;
- int fso_bufcnt;
-};
-
struct fsfilt_operations {
- struct list_head fs_list;
- struct module *fs_owner;
+ cfs_list_t fs_list;
+ cfs_module_t *fs_owner;
char *fs_type;
- void *(* fs_start)(struct inode *inode, int op, void *desc_private);
- void *(* fs_brw_start)(int objcount, struct fsfilt_objinfo *fso,
- int niocount, void *desc_private);
+ char *(* fs_getlabel)(struct super_block *sb);
+ void *(* fs_start)(struct inode *inode, int op, void *desc_private,
+ int logs);
int (* fs_commit)(struct inode *inode, void *handle,int force_sync);
- int (* fs_setattr)(struct dentry *dentry, void *handle,
- struct iattr *iattr, int do_trunc);
- int (* fs_set_md)(struct inode *inode, void *handle, void *md,
- int size);
- int (* fs_get_md)(struct inode *inode, void *md, int size);
- ssize_t (* fs_readpage)(struct file *file, char *buf, size_t count,
- loff_t *offset);
- int (* fs_journal_data)(struct file *file);
- int (* fs_set_last_rcvd)(struct obd_device *obd, __u64 last_rcvd,
- void *handle, fsfilt_cb_t cb_func,
- void *cb_data);
- int (* fs_statfs)(struct super_block *sb, struct obd_statfs *osfs);
- int (* fs_sync)(struct super_block *sb);
- int (* fs_prep_san_write)(struct inode *inode, long *blocks,
- int nblocks, loff_t newsize);
- int (* fs_write_record)(struct file *, char *, int size, loff_t *);
- int (* fs_read_record)(struct file *, char *, int size, loff_t *);
+ int (* fs_map_inode_pages)(struct inode *inode, struct page **page,
+ int pages, unsigned long *blocks,
+ int *created, int create,
+ struct mutex *sem);
+ int (* fs_write_record)(struct file *, void *, int size, loff_t *,
+ int force_sync);
+ int (* fs_read_record)(struct file *, void *, int size, loff_t *);
+ int (* fs_setup)(struct super_block *sb);
};
extern int fsfilt_register_ops(struct fsfilt_operations *fs_ops);
extern struct fsfilt_operations *fsfilt_get_ops(const char *type);
extern void fsfilt_put_ops(struct fsfilt_operations *fs_ops);
-#define FSFILT_OP_UNLINK 1
-#define FSFILT_OP_RMDIR 2
-#define FSFILT_OP_RENAME 3
-#define FSFILT_OP_CREATE 4
-#define FSFILT_OP_MKDIR 5
-#define FSFILT_OP_SYMLINK 6
-#define FSFILT_OP_MKNOD 7
-#define FSFILT_OP_SETATTR 8
-#define FSFILT_OP_LINK 9
-#define FSFILT_OP_CREATE_LOG 10
-#define FSFILT_OP_UNLINK_LOG 11
-
-static inline void *fsfilt_start(struct obd_device *obd, struct inode *inode,
- int op, struct obd_trans_info *oti)
+static inline char *fsfilt_get_label(struct obd_device *obd,
+ struct super_block *sb)
{
- unsigned long now = jiffies;
- void *parent_handle = oti ? oti->oti_handle : NULL;
- void *handle = obd->obd_fsops->fs_start(inode, op, parent_handle);
- CDEBUG(D_HA, "started handle %p (%p)\n", handle, parent_handle);
+ if (obd->obd_fsops->fs_getlabel == NULL)
+ return NULL;
+ if (obd->obd_fsops->fs_getlabel(sb)[0] == '\0')
+ return NULL;
- if (oti != NULL) {
- if (parent_handle == NULL) {
- oti->oti_handle = handle;
- } else if (handle != parent_handle) {
- CERROR("mismatch: parent %p, handle %p, oti %p\n",
- parent_handle, handle, oti->oti_handle);
- LBUG();
- }
- }
- if (time_after(jiffies, now + 15 * HZ))
- CERROR("long journal start time %lus\n", (jiffies - now) / HZ);
- return handle;
+ return obd->obd_fsops->fs_getlabel(sb);
}
-static inline void *fsfilt_brw_start(struct obd_device *obd, int objcount,
- struct fsfilt_objinfo *fso, int niocount,
- struct obd_trans_info *oti)
+#define FSFILT_OP_UNLINK 1
+#define FSFILT_OP_RMDIR 2
+#define FSFILT_OP_RENAME 3
+#define FSFILT_OP_CREATE 4
+#define FSFILT_OP_MKDIR 5
+#define FSFILT_OP_SYMLINK 6
+#define FSFILT_OP_MKNOD 7
+#define FSFILT_OP_SETATTR 8
+#define FSFILT_OP_LINK 9
+#define FSFILT_OP_CANCEL_UNLINK 10
+
+#define __fsfilt_check_slow(obd, start, msg) \
+do { \
+ if (cfs_time_before(jiffies, start + 15 * CFS_HZ)) \
+ break; \
+ else if (cfs_time_before(jiffies, start + 30 * CFS_HZ)) \
+ CDEBUG(D_VFSTRACE, "%s: slow %s %lus\n", obd->obd_name, \
+ msg, (jiffies-start) / CFS_HZ); \
+ else if (cfs_time_before(jiffies, start + DISK_TIMEOUT * CFS_HZ)) \
+ CWARN("%s: slow %s %lus\n", obd->obd_name, msg, \
+ (jiffies - start) / CFS_HZ); \
+ else \
+ CERROR("%s: slow %s %lus\n", obd->obd_name, msg, \
+ (jiffies - start) / CFS_HZ); \
+} while (0)
+
+#define fsfilt_check_slow(obd, start, msg) \
+do { \
+ __fsfilt_check_slow(obd, start, msg); \
+ start = jiffies; \
+} while (0)
+
+static inline void *fsfilt_start_log(struct obd_device *obd,
+ struct inode *inode, int op,
+ struct obd_trans_info *oti, int logs)
{
unsigned long now = jiffies;
void *parent_handle = oti ? oti->oti_handle : NULL;
void *handle;
- handle = obd->obd_fsops->fs_brw_start(objcount, fso, niocount,
- parent_handle);
- CDEBUG(D_HA, "started handle %p (%p)\n", handle, parent_handle);
+ handle = obd->obd_fsops->fs_start(inode, op, parent_handle, logs);
+ CDEBUG(D_INFO, "started handle %p (%p)\n", handle, parent_handle);
if (oti != NULL) {
if (parent_handle == NULL) {
oti->oti_handle = handle;
} else if (handle != parent_handle) {
CERROR("mismatch: parent %p, handle %p, oti %p\n",
- parent_handle, handle, oti->oti_handle);
+ parent_handle, handle, oti);
LBUG();
}
}
- if (time_after(jiffies, now + 15 * HZ))
- CERROR("long journal start time %lus\n", (jiffies - now) / HZ);
+ fsfilt_check_slow(obd, now, "journal start");
return handle;
}
{
unsigned long now = jiffies;
int rc = obd->obd_fsops->fs_commit(inode, handle, force_sync);
- CDEBUG(D_HA, "committing handle %p\n", handle);
- if (time_after(jiffies, now + 15 * HZ))
- CERROR("long journal start time %lus\n", (jiffies - now) / HZ);
- return rc;
-}
-
-static inline int fsfilt_setattr(struct obd_device *obd, struct dentry *dentry,
- void *handle, struct iattr *iattr,int do_trunc)
-{
- unsigned long now = jiffies;
- int rc;
- rc = obd->obd_fsops->fs_setattr(dentry, handle, iattr, do_trunc);
- if (time_after(jiffies, now + 15 * HZ))
- CERROR("long setattr time %lus\n", (jiffies - now) / HZ);
- return rc;
-}
-
-static inline int fsfilt_set_md(struct obd_device *obd, struct inode *inode,
- void *handle, void *md, int size)
-{
- return obd->obd_fsops->fs_set_md(inode, handle, md, size);
-}
-
-static inline int fsfilt_get_md(struct obd_device *obd, struct inode *inode,
- void *md, int size)
-{
- return obd->obd_fsops->fs_get_md(inode, md, size);
-}
+ CDEBUG(D_INFO, "committing handle %p\n", handle);
-static inline ssize_t fsfilt_readpage(struct obd_device *obd,
- struct file *file, char *buf,
- size_t count, loff_t *offset)
-{
- return obd->obd_fsops->fs_readpage(file, buf, count, offset);
-}
+ fsfilt_check_slow(obd, now, "journal start");
-static inline int fsfilt_journal_data(struct obd_device *obd, struct file *file)
-{
- return obd->obd_fsops->fs_journal_data(file);
+ return rc;
}
-static inline int fsfilt_set_last_rcvd(struct obd_device *obd, __u64 last_rcvd,
- void *handle, fsfilt_cb_t cb_func,
- void *cb_data)
+static inline int fsfilt_map_inode_pages(struct obd_device *obd,
+ struct inode *inode,
+ struct page **page, int pages,
+ unsigned long *blocks, int *created,
+ int create, struct mutex *mutex)
{
- return obd->obd_fsops->fs_set_last_rcvd(obd, last_rcvd, handle,
- cb_func, cb_data);
+ return obd->obd_fsops->fs_map_inode_pages(inode, page, pages, blocks,
+ created, create, mutex);
}
-static inline int fsfilt_statfs(struct obd_device *obd, struct super_block *fs,
- struct obd_statfs *osfs)
+static inline int fsfilt_read_record(struct obd_device *obd, struct file *file,
+ void *buf, loff_t size, loff_t *offs)
{
- return obd->obd_fsops->fs_statfs(fs, osfs);
+ return obd->obd_fsops->fs_read_record(file, buf, size, offs);
}
-static inline int fsfilt_sync(struct obd_device *obd, struct super_block *fs)
+static inline int fsfilt_write_record(struct obd_device *obd, struct file *file,
+ void *buf, loff_t size, loff_t *offs,
+ int force_sync)
{
- return obd->obd_fsops->fs_sync(fs);
+ return obd->obd_fsops->fs_write_record(file, buf, size,offs,force_sync);
}
-static inline int fs_prep_san_write(struct obd_device *obd,
- struct inode *inode,
- long *blocks,
- int nblocks,
- loff_t newsize)
+static inline int fsfilt_setup(struct obd_device *obd, struct super_block *fs)
{
- return obd->obd_fsops->fs_prep_san_write(inode, blocks,
- nblocks, newsize);
+ if (obd->obd_fsops->fs_setup)
+ return obd->obd_fsops->fs_setup(fs);
+ return 0;
}
-static inline int fsfilt_read_record(struct obd_device *obd, struct file *file,
- char *buf, loff_t size, loff_t *offs)
-{
- return obd->obd_fsops->fs_read_record(file, buf, size, offs);
-}
-static inline int fsfilt_write_record(struct obd_device *obd, struct file *file,
- char *buf, loff_t size, loff_t *offs)
-{
- return obd->obd_fsops->fs_write_record(file, buf, size, offs);
-}
#endif /* __KERNEL__ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff