/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2001 Cluster File Systems, Inc. <info@clusterfs.com>
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * 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 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 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.
+ * 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).
*
- * 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.
+ * 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
*
- * Filesystem interface helper.
+ * 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.
+ *
+ * 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/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);
int fso_bufcnt;
};
+struct lustre_dquot;
struct fsfilt_operations {
struct list_head fs_list;
struct module *fs_owner;
char *fs_type;
- void *(* fs_start)(struct inode *inode, int op, void *desc_private);
+ char *(* fs_getlabel)(struct super_block *sb);
+ int (* fs_setlabel)(struct super_block *sb, char *label);
+ char *(* fs_uuid)(struct super_block *sb);
+ void *(* fs_start)(struct inode *inode, int op, void *desc_private,
+ int logs);
void *(* fs_brw_start)(int objcount, struct fsfilt_objinfo *fso,
- int niocount, void *desc_private);
+ int niocount, struct niobuf_local *nb,
+ void *desc_private, int logs);
+ int (* fs_extend)(struct inode *inode, unsigned nblocks, void *h);
int (* fs_commit)(struct inode *inode, void *handle,int force_sync);
int (* fs_commit_async)(struct inode *inode, void *handle,
void **wait_handle);
int (* fs_iocontrol)(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg);
int (* fs_set_md)(struct inode *inode, void *handle, void *md,
- int size);
- int (* fs_get_md)(struct inode *inode, void *md, int size);
+ int size, const char *name);
+ int (* fs_get_md)(struct inode *inode, void *md, int size,
+ const char *name);
+ /*
+ * this method is needed to make IO operation fsfilt nature depend.
+ *
+ * This operation maybe synchronous or asynchronous.
+ *
+ * Return convention: positive number of bytes written (synchronously)
+ * on success. Negative errno value on failure. Zero if asynchronous
+ * IO was submitted successfully.
+ *
+ */
+ int (* fs_send_bio)(int rw, struct inode *inode,struct kiobuf *bio);
ssize_t (* fs_readpage)(struct file *file, char *buf, size_t count,
loff_t *offset);
int (* fs_add_journal_cb)(struct obd_device *obd, __u64 last_rcvd,
void *cb_data);
int (* fs_statfs)(struct super_block *sb, struct obd_statfs *osfs);
int (* fs_sync)(struct super_block *sb);
- int (* fs_map_inode_page)(struct inode *inode, struct page *page,
- unsigned long *blocks, int *created,
- int create);
- int (* fs_prep_san_write)(struct inode *inode, long *blocks,
- int nblocks, loff_t newsize);
+ int (* fs_map_inode_pages)(struct inode *inode, struct page **page,
+ int pages, unsigned long *blocks,
+ int *created, int create,
+ struct semaphore *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);
+ int (* fs_get_op_len)(int, struct fsfilt_objinfo *, int);
+ int (* fs_quotacheck)(struct super_block *sb,
+ struct obd_quotactl *oqctl);
+ __u64 (* fs_get_version) (struct inode *inode);
+ __u64 (* fs_set_version) (struct inode *inode, __u64 new_version);
+ int (* fs_quotactl)(struct super_block *sb,
+ struct obd_quotactl *oqctl);
+ int (* fs_quotainfo)(struct lustre_quota_info *lqi, int type,
+ int cmd);
+ int (* fs_qids)(struct file *file, struct inode *inode, int type,
+ struct list_head *list);
+ int (* fs_get_mblk)(struct super_block *sb, int *count,
+ struct inode *inode, int frags);
+ int (* fs_dquot)(struct lustre_dquot *dquot, int cmd);
+ lvfs_sbdev_type (* fs_journal_sbdev)(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 char *fsfilt_get_label(struct obd_device *obd,
+ struct super_block *sb)
+{
+ if (obd->obd_fsops->fs_getlabel == NULL)
+ return NULL;
+ if (obd->obd_fsops->fs_getlabel(sb)[0] == '\0')
+ return NULL;
-static inline void *fsfilt_start(struct obd_device *obd, struct inode *inode,
- int op, struct obd_trans_info *oti)
+ return obd->obd_fsops->fs_getlabel(sb);
+}
+
+static inline int fsfilt_set_label(struct obd_device *obd,
+ struct super_block *sb, char *label)
+{
+ if (obd->obd_fsops->fs_setlabel == NULL)
+ return -ENOSYS;
+ return (obd->obd_fsops->fs_setlabel(sb, label));
+}
+
+static inline __u8 *fsfilt_uuid(struct obd_device *obd, struct super_block *sb)
+{
+ if (obd->obd_fsops->fs_uuid == NULL)
+ return NULL;
+
+ return obd->obd_fsops->fs_uuid(sb);
+}
+
+static inline lvfs_sbdev_type fsfilt_journal_sbdev(struct obd_device *obd,
+ struct super_block *sb)
+{
+ if (obd && obd->obd_fsops && obd->obd_fsops->fs_journal_sbdev)
+ return obd->obd_fsops->fs_journal_sbdev(sb);
+ return (lvfs_sbdev_type)0;
+}
+
+#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_OP_JOIN 11
+#define FSFILT_OP_NOOP 15
+#define FSFILT_OP_UNLINK_PARTIAL_CHILD 21
+#define FSFILT_OP_UNLINK_PARTIAL_PARENT 22
+#define FSFILT_OP_CREATE_PARTIAL_CHILD 23
+
+#define __fsfilt_check_slow(obd, start, msg) \
+do { \
+ if (time_before(jiffies, start + 15 * HZ)) \
+ break; \
+ else if (time_before(jiffies, start + 30 * HZ)) \
+ CDEBUG(D_VFSTRACE, "%s: slow %s %lus\n", obd->obd_name, \
+ msg, (jiffies-start) / HZ); \
+ else if (time_before(jiffies, start + DISK_TIMEOUT * HZ)) \
+ CWARN("%s: slow %s %lus\n", obd->obd_name, msg, \
+ (jiffies - start) / HZ); \
+ else \
+ CERROR("%s: slow %s %lus\n", obd->obd_name, msg, \
+ (jiffies - start) / 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 = obd->obd_fsops->fs_start(inode, op, parent_handle);
- CDEBUG(D_HA, "started handle %p (%p)\n", handle, parent_handle);
+ void *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;
}
-static inline void *fsfilt_brw_start(struct obd_device *obd, int objcount,
- struct fsfilt_objinfo *fso, int niocount,
- struct obd_trans_info *oti)
+static inline void *fsfilt_start(struct obd_device *obd, struct inode *inode,
+ int op, struct obd_trans_info *oti)
+{
+ return fsfilt_start_log(obd, inode, op, oti, 0);
+}
+
+static inline void *fsfilt_brw_start_log(struct obd_device *obd, int objcount,
+ struct fsfilt_objinfo *fso,
+ int niocount, struct niobuf_local *nb,
+ 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_brw_start(objcount, fso, niocount, nb,
+ 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;
}
+static inline void *fsfilt_brw_start(struct obd_device *obd, int objcount,
+ struct fsfilt_objinfo *fso, int niocount,
+ struct niobuf_local *nb,
+ struct obd_trans_info *oti)
+{
+ return fsfilt_brw_start_log(obd, objcount, fso, niocount, nb, oti, 0);
+}
+
+static inline int fsfilt_extend(struct obd_device *obd, struct inode *inode,
+ unsigned int nblocks, void *handle)
+{
+ unsigned long now = jiffies;
+ int rc = obd->obd_fsops->fs_extend(inode, nblocks, handle);
+ CDEBUG(D_INFO, "extending handle %p with %u blocks\n", handle, nblocks);
+
+ fsfilt_check_slow(obd, now, "journal extend");
+
+ return rc;
+}
+
static inline int fsfilt_commit(struct obd_device *obd, struct inode *inode,
void *handle, int force_sync)
{
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);
+ CDEBUG(D_INFO, "committing handle %p\n", handle);
+
+ fsfilt_check_slow(obd, now, "journal start");
+
return rc;
}
static inline int fsfilt_commit_async(struct obd_device *obd,
- struct inode *inode,
- void *handle,
- void **wait_handle)
+ struct inode *inode, void *handle,
+ void **wait_handle)
{
unsigned long now = jiffies;
int rc = obd->obd_fsops->fs_commit_async(inode, handle, wait_handle);
- CDEBUG(D_HA, "committing handle %p (async)\n", *wait_handle);
- if (time_after(jiffies, now + 15 * HZ))
- CERROR("long journal start time %lus\n", (jiffies - now) / HZ);
+
+ CDEBUG(D_INFO, "committing handle %p (async)\n", *wait_handle);
+ fsfilt_check_slow(obd, now, "journal start");
+
return rc;
}
-static inline int fsfilt_commit_wait(struct obd_device *obd, struct inode *inode,
- void *handle)
+static inline int fsfilt_commit_wait(struct obd_device *obd,
+ struct inode *inode, void *handle)
{
unsigned long now = jiffies;
int rc = obd->obd_fsops->fs_commit_wait(inode, handle);
- CDEBUG(D_HA, "waiting for completion %p\n", handle);
- if (time_after(jiffies, now + 15 * HZ))
- CERROR("long journal start time %lus\n", (jiffies - now) / HZ);
+ CDEBUG(D_INFO, "waiting for completion %p\n", handle);
+ fsfilt_check_slow(obd, now, "journal start");
return rc;
}
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);
+ fsfilt_check_slow(obd, now, "setattr");
return rc;
}
}
static inline int fsfilt_set_md(struct obd_device *obd, struct inode *inode,
- void *handle, void *md, int size)
+ void *handle, void *md, int size,
+ const char *name)
{
- return obd->obd_fsops->fs_set_md(inode, handle, md, size);
+ return obd->obd_fsops->fs_set_md(inode, handle, md, size, name);
}
static inline int fsfilt_get_md(struct obd_device *obd, struct inode *inode,
- void *md, int size)
+ void *md, int size, const char *name)
{
- return obd->obd_fsops->fs_get_md(inode, md, size);
+ return obd->obd_fsops->fs_get_md(inode, md, size, name);
+}
+
+static inline int fsfilt_send_bio(int rw, struct obd_device *obd,
+ struct inode *inode, void *bio)
+{
+ LASSERTF(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ, "%x\n", rw);
+
+ if (rw == OBD_BRW_READ)
+ return obd->obd_fsops->fs_send_bio(READ, inode, bio);
+ return obd->obd_fsops->fs_send_bio(WRITE, inode, bio);
}
static inline ssize_t fsfilt_readpage(struct obd_device *obd,
void *handle, fsfilt_cb_t cb_func,
void *cb_data)
{
- return obd->obd_fsops->fs_add_journal_cb(obd, last_rcvd, handle,
- cb_func, cb_data);
+ return obd->obd_fsops->fs_add_journal_cb(obd, last_rcvd,
+ handle, cb_func, cb_data);
}
+/* very similar to obd_statfs(), but caller already holds obd_osfs_lock */
static inline int fsfilt_statfs(struct obd_device *obd, struct super_block *sb,
- struct obd_statfs *osfs)
+ __u64 max_age)
{
- return obd->obd_fsops->fs_statfs(sb, osfs);
+ int rc = 0;
+
+ CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
+ obd->obd_osfs_age, max_age);
+ if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
+ rc = obd->obd_fsops->fs_statfs(sb, &obd->obd_osfs);
+ if (rc == 0) /* N.B. statfs can't really fail */
+ obd->obd_osfs_age = cfs_time_current_64();
+ } else {
+ CDEBUG(D_SUPER, "using cached obd_statfs data\n");
+ }
+
+ return rc;
}
static inline int fsfilt_sync(struct obd_device *obd, struct super_block *sb)
return obd->obd_fsops->fs_sync(sb);
}
-static inline int fsfilt_map_inode_page(struct obd_device *obd,
- struct inode *inode, struct page *page,
- unsigned long *blocks, int *created,
- int create)
+static inline int fsfilt_quotacheck(struct obd_device *obd,
+ struct super_block *sb,
+ struct obd_quotactl *oqctl)
+{
+ if (obd->obd_fsops->fs_quotacheck)
+ return obd->obd_fsops->fs_quotacheck(sb, oqctl);
+ return -ENOTSUPP;
+}
+
+static inline int fsfilt_quotactl(struct obd_device *obd,
+ struct super_block *sb,
+ struct obd_quotactl *oqctl)
+{
+ if (obd->obd_fsops->fs_quotactl)
+ return obd->obd_fsops->fs_quotactl(sb, oqctl);
+ return -ENOTSUPP;
+}
+
+static inline int fsfilt_quotainfo(struct obd_device *obd,
+ struct lustre_quota_info *lqi,
+ int type, int cmd)
+{
+ if (obd->obd_fsops->fs_quotainfo)
+ return obd->obd_fsops->fs_quotainfo(lqi, type, cmd);
+ return -ENOTSUPP;
+}
+
+static inline int fsfilt_qids(struct obd_device *obd, struct file *file,
+ struct inode *inode, int type,
+ struct list_head *list)
+{
+ if (obd->obd_fsops->fs_qids)
+ return obd->obd_fsops->fs_qids(file, inode, type, list);
+ return -ENOTSUPP;
+}
+
+static inline int fsfilt_dquot(struct obd_device *obd,
+ struct lustre_dquot *dquot, int cmd)
{
- return obd->obd_fsops->fs_map_inode_page(inode, page, blocks, created,
- create);
+ if (obd->obd_fsops->fs_dquot)
+ return obd->obd_fsops->fs_dquot(dquot, cmd);
+ return -ENOTSUPP;
}
-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_get_mblk(struct obd_device *obd,
+ struct super_block *sb, int *count,
+ struct inode *inode, int frags)
{
- return obd->obd_fsops->fs_prep_san_write(inode, blocks,
- nblocks, newsize);
+ if (obd->obd_fsops->fs_get_mblk)
+ return obd->obd_fsops->fs_get_mblk(sb, count, inode, frags);
+ return -ENOTSUPP;
+}
+
+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 semaphore *sem)
+{
+ return obd->obd_fsops->fs_map_inode_pages(inode, page, pages, blocks,
+ created, create, sem);
}
static inline int fsfilt_read_record(struct obd_device *obd, struct file *file,
return 0;
}
+static inline __u64 fsfilt_set_version(struct obd_device *obd,
+ struct inode *inode, __u64 new_version)
+{
+ if (obd->obd_fsops->fs_set_version)
+ return obd->obd_fsops->fs_set_version(inode, new_version);
+ return -EOPNOTSUPP;
+}
+
+static inline __u64 fsfilt_get_version(struct obd_device *obd,
+ struct inode *inode)
+{
+ if (obd->obd_fsops->fs_get_version)
+ return obd->obd_fsops->fs_get_version(inode);
+ return -EOPNOTSUPP;
+}
+
#endif /* __KERNEL__ */
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff