X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Finclude%2Flinux%2Flustre_fsfilt.h;h=a0754e9339120044a5003bfee089ffd308288467;hp=f736d4b1fe1f1205b78d058589d62ff0756ae96b;hb=27a2db7e9cad513c0afcaf901e5e93ac7cd03662;hpb=96ec6856f91f7f9031cfce4273c714d72cfe59ae diff --git a/lustre/include/linux/lustre_fsfilt.h b/lustre/include/linux/lustre_fsfilt.h index f736d4b..a0754e9 100644 --- a/lustre/include/linux/lustre_fsfilt.h +++ b/lustre/include/linux/lustre_fsfilt.h @@ -1,133 +1,359 @@ /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * - * Copyright (C) 2001 Cluster File Systems, Inc. + * 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 instead +#endif #ifdef __KERNEL__ -#include -#include +#include +#include -typedef void (*fsfilt_cb_t)(struct obd_device *obd, __u64 last_rcvd, int error); +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 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); + 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, struct niobuf_remote *nb); + 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_commit_wait)(struct inode *inode, void *handle); int (* fs_setattr)(struct dentry *dentry, void *handle, - struct iattr *iattr); + struct iattr *iattr, int do_trunc); + 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_journal_data)(struct file *file); - int (* fs_set_last_rcvd)(struct obd_device *obd, __u64 last_rcvd, - void *handle, fsfilt_cb_t cb_func); + int (* fs_add_journal_cb)(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_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 void fsfilt_unregister_ops(struct fsfilt_operations *fs_ops); -extern struct fsfilt_operations *fsfilt_get_ops(char *type); +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 - -static inline void *fsfilt_start(struct obd_device *obd, - struct inode *inode, int op) -{ - void *handle = obd->obd_fsops->fs_start(inode, op); - CDEBUG(D_HA, "starting handle %p\n", handle); +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; + + 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; + + 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); + LBUG(); + } + } + fsfilt_check_slow(obd, now, "journal start"); + return handle; +} + +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, 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); + LBUG(); + } + } + 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_remote *nb) + struct niobuf_local *nb, + struct obd_trans_info *oti) { - void *handle = obd->obd_fsops->fs_brw_start(objcount, fso, niocount,nb); - CDEBUG(D_HA, "starting handle %p\n", handle); - return handle; + 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) { - CDEBUG(D_HA, "committing handle %p\n", handle); - return obd->obd_fsops->fs_commit(inode, handle, force_sync); + unsigned long now = jiffies; + int rc = obd->obd_fsops->fs_commit(inode, handle, force_sync); + 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) +{ + unsigned long now = jiffies; + int rc = obd->obd_fsops->fs_commit_async(inode, handle, wait_handle); + + 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) +{ + unsigned long now = jiffies; + int rc = obd->obd_fsops->fs_commit_wait(inode, handle); + CDEBUG(D_INFO, "waiting for completion %p\n", handle); + fsfilt_check_slow(obd, now, "journal start"); + return rc; } static inline int fsfilt_setattr(struct obd_device *obd, struct dentry *dentry, - void *handle, struct iattr *iattr) + void *handle, struct iattr *iattr,int do_trunc) { + unsigned long now = jiffies; int rc; - /* - * NOTE: we probably don't need to take i_sem here when changing - * ATTR_SIZE because the MDS never needs to truncate a file. - * The ext2/ext3 code never truncates a directory, and files - * stored on the MDS are entirely sparse (no data blocks). - * If we do need to get it, we can do it here. - */ - lock_kernel(); - rc = obd->obd_fsops->fs_setattr(dentry, handle, iattr); - unlock_kernel(); - + rc = obd->obd_fsops->fs_setattr(dentry, handle, iattr, do_trunc); + fsfilt_check_slow(obd, now, "setattr"); return rc; } +static inline int fsfilt_iocontrol(struct obd_device *obd, struct inode *inode, + struct file *file, unsigned int cmd, + unsigned long arg) +{ + return obd->obd_fsops->fs_iocontrol(inode, file, cmd, arg); +} + 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, @@ -137,37 +363,137 @@ static inline ssize_t fsfilt_readpage(struct obd_device *obd, return obd->obd_fsops->fs_readpage(file, buf, count, offset); } -static inline int fsfilt_journal_data(struct obd_device *obd, struct file *file) +static inline int fsfilt_add_journal_cb(struct obd_device *obd, __u64 last_rcvd, + 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); +} + +/* 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, + __u64 max_age) +{ + 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_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) { - return obd->obd_fsops->fs_journal_data(file); + if (obd->obd_fsops->fs_qids) + return obd->obd_fsops->fs_qids(file, inode, type, list); + return -ENOTSUPP; } -static inline int fsfilt_set_last_rcvd(struct obd_device *obd, __u64 last_rcvd, - void *handle, fsfilt_cb_t cb_func) +static inline int fsfilt_dquot(struct obd_device *obd, + struct lustre_dquot *dquot, int cmd) { - return obd->obd_fsops->fs_set_last_rcvd(obd, last_rcvd,handle,cb_func); + if (obd->obd_fsops->fs_dquot) + return obd->obd_fsops->fs_dquot(dquot, cmd); + return -ENOTSUPP; } -static inline int fsfilt_statfs(struct obd_device *obd, struct super_block *fs, - struct obd_statfs *osfs) +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_statfs(fs, osfs); + if (obd->obd_fsops->fs_get_mblk) + return obd->obd_fsops->fs_get_mblk(sb, count, inode, frags); + return -ENOTSUPP; } -static inline int fsfilt_sync(struct obd_device *obd, struct super_block *fs) +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_sync(fs); + return obd->obd_fsops->fs_map_inode_pages(inode, page, pages, blocks, + created, create, sem); } -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_read_record(struct obd_device *obd, struct file *file, + void *buf, loff_t size, loff_t *offs) { - return obd->obd_fsops->fs_prep_san_write(inode, blocks, - nblocks, newsize); + return obd->obd_fsops->fs_read_record(file, buf, size, offs); } + +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_write_record(file, buf, size,offs,force_sync); +} + +static inline int fsfilt_setup(struct obd_device *obd, struct super_block *fs) +{ + if (obd->obd_fsops->fs_setup) + return obd->obd_fsops->fs_setup(fs); + 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