X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flinux%2Flustre_fsfilt.h;h=70a4bc890ae978a7b5a4d5fefcb70bb076ce4f8b;hb=9b6f9d17a35188f5f4dbfae840164b999a7a78a2;hp=341d082d810ab06937667f9270eda812b0081c67;hpb=93acd158c57c4c5d0fc751d46741231490c04707;p=fs%2Flustre-release.git diff --git a/lustre/include/linux/lustre_fsfilt.h b/lustre/include/linux/lustre_fsfilt.h index 341d082..70a4bc8 100644 --- a/lustre/include/linux/lustre_fsfilt.h +++ b/lustre/include/linux/lustre_fsfilt.h @@ -1,7 +1,7 @@ /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * - * Copyright (C) 2001 Cluster File Systems, Inc. + * Copyright (C) 2001-2004 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * @@ -22,48 +22,135 @@ * */ +#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; }; +#define XATTR_LUSTRE_MDS_LOV_EA "lov" + +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 (* fs_commit)(struct inode *inode, void *handle); + 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_map_inode_pages)(struct inode *inode, struct page **page, + int pages, unsigned long *blocks, + int *created, int create, + struct semaphore *sem); + int (* fs_prep_san_write)(struct inode *inode, long *blocks, + int nblocks, loff_t newsize); + 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); + 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_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); +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 @@ -73,54 +160,181 @@ extern void fsfilt_put_ops(struct fsfilt_operations *fs_ops); #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_check_slow(obd, start, timeout, 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 + timeout / 2 * 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) + +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; + + if (obd->obd_fail) + return ERR_PTR(-EROFS); -static inline void *fsfilt_start(struct obd_device *obd, - struct inode *inode, int op) + 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, obd_timeout, "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) { - return obd->obd_fsops->fs_start(inode, op); + unsigned long now = jiffies; + void *parent_handle = oti ? oti->oti_handle : NULL; + void *handle; + + if (obd->obd_fail) + return ERR_PTR(-EROFS); + + 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, obd_timeout, "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) { - return obd->obd_fsops->fs_brw_start(objcount, fso, niocount, nb); + 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, obd_timeout, "journal extend"); + + return rc; } static inline int fsfilt_commit(struct obd_device *obd, struct inode *inode, - void *handle) + void *handle, int 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, obd_timeout, "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, obd_timeout, "journal start"); + + return rc; +} + +static inline int fsfilt_commit_wait(struct obd_device *obd, + struct inode *inode, void *handle) { - return obd->obd_fsops->fs_commit(inode, 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, obd_timeout, "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, obd_timeout, "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, @@ -130,26 +344,117 @@ 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) +{ + 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) +{ + if (obd->obd_fsops->fs_dquot) + return obd->obd_fsops->fs_dquot(dquot, cmd); + 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 fs_prep_san_write(struct obd_device *obd, struct inode *inode, + long *blocks, int nblocks, loff_t newsize) { - return obd->obd_fsops->fs_journal_data(file); + return obd->obd_fsops->fs_prep_san_write(inode, blocks, + nblocks, newsize); } -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_read_record(struct obd_device *obd, struct file *file, + void *buf, loff_t size, loff_t *offs) { - return obd->obd_fsops->fs_set_last_rcvd(obd, last_rcvd,handle,cb_func); + return obd->obd_fsops->fs_read_record(file, buf, size, offs); } -static inline int fsfilt_statfs(struct obd_device *obd, struct super_block *fs, - struct obd_statfs *osfs) +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_statfs(fs, osfs); + return obd->obd_fsops->fs_write_record(file, buf, size,offs,force_sync); } -static inline int fsfilt_sync(struct obd_device *obd, struct super_block *fs) +static inline int fsfilt_setup(struct obd_device *obd, struct super_block *fs) { - return obd->obd_fsops->fs_sync(fs); + if (obd->obd_fsops->fs_setup) + return obd->obd_fsops->fs_setup(fs); + return 0; } #endif /* __KERNEL__ */