X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fllite%2Fsuper25.c;h=e56d77387d09994370b16c4346b01a1555cd4399;hb=46dcacd1f77e0d70727c3ef601f58f9f6cf0af46;hp=a4ea8b7c8030893f626da895e69b36e26c35eace;hpb=ce21745eae662ecf9301afa40608c1cd0d116d25;p=fs%2Flustre-release.git diff --git a/lustre/llite/super25.c b/lustre/llite/super25.c index a4ea8b7..e56d773 100644 --- a/lustre/llite/super25.c +++ b/lustre/llite/super25.c @@ -3,672 +3,187 @@ * * Lustre Light Super operations * - * This code is issued under the GNU General Public License. - * See the file COPYING in this distribution + * Copyright (c) 2002, 2003 Cluster File Systems, Inc. * - * Copryright (C) 2002 Cluster File Systems, Inc. + * This file is part of Lustre, http://www.lustre.org. + * + * 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. + * + * 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 + * along with Lustre; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define DEBUG_SUBSYSTEM S_LLITE #include +#include #include #include -#include -#include -#include -#include +#include +#include +#include #include #include - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) -kmem_cache_t *ll_file_data_slab; -extern struct address_space_operations ll_aops; -extern struct address_space_operations ll_dir_aops; -struct super_operations ll_super_operations; - -extern int ll_init_inodecache(void); -extern void ll_destroy_inodecache(void); -extern int ll_recover(struct recovd_data *, int); -extern int ll_commitcbd_setup(struct ll_sb_info *); -extern int ll_commitcbd_cleanup(struct ll_sb_info *); -int ll_read_inode2(struct inode *inode, void *opaque); - -static char *ll_read_opt(const char *opt, char *data) -{ - char *value; - char *retval; - ENTRY; - - CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data); - if ( strncmp(opt, data, strlen(opt)) ) - RETURN(NULL); - if ( (value = strchr(data, '=')) == NULL ) - RETURN(NULL); - - value++; - OBD_ALLOC(retval, strlen(value) + 1); - if ( !retval ) { - CERROR("out of memory!\n"); - RETURN(NULL); - } - - memcpy(retval, value, strlen(value)+1); - CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval); - RETURN(retval); -} - -static int ll_set_opt(const char *opt, char *data, int fl) -{ - ENTRY; - - CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data); - if ( strncmp(opt, data, strlen(opt)) ) - RETURN(0); - else - RETURN(fl); -} - -static void ll_options(char *options, char **ost, char **mds, int *flags) -{ - char *opt_ptr = options; - char *this_char; - ENTRY; - - if (!options) { - EXIT; - return; - } - - while ((this_char = strsep (&opt_ptr, ",")) != NULL) { - CDEBUG(D_SUPER, "this_char %s\n", this_char); - if ( (!*ost && (*ost = ll_read_opt("osc", this_char)))|| - (!*mds && (*mds = ll_read_opt("mdc", this_char)))|| - (!(*flags & LL_SBI_NOLCK) && ((*flags) = (*flags) | - ll_set_opt("nolock", this_char, LL_SBI_NOLCK))) ) - continue; - } - EXIT; -} - -#ifndef log2 -#define log2(n) ffz(~(n)) -#endif - - -static int ll_fill_super(struct super_block *sb, void *data, int silent) -{ - struct inode *root = 0; - struct obd_device *obd; - struct ll_sb_info *sbi; - char *osc = NULL; - char *mdc = NULL; - int err; - struct ll_fid rootfid; - struct obd_statfs osfs; - __u64 last_committed; - __u64 last_xid; - struct ptlrpc_request *request = NULL; - struct ptlrpc_connection *mdc_conn; - struct ll_read_inode2_cookie lic; - class_uuid_t uuid; - - ENTRY; - MOD_INC_USE_COUNT; - - OBD_ALLOC(sbi, sizeof(*sbi)); - if (!sbi) { - MOD_DEC_USE_COUNT; - RETURN(-ENOMEM); - } - - INIT_LIST_HEAD(&sbi->ll_conn_chain); - generate_random_uuid(uuid); - class_uuid_unparse(uuid, sbi->ll_sb_uuid); - - sb->s_fs_info = sbi; - - ll_options(data, &osc, &mdc, &sbi->ll_flags); - - if (!osc) { - CERROR("no osc\n"); - GOTO(out_free, sb = NULL); - } - - if (!mdc) { - CERROR("no mdc\n"); - GOTO(out_free, sb = NULL); - } - - obd = class_uuid2obd(mdc); - if (!obd) { - CERROR("MDC %s: not setup or attached\n", mdc); - GOTO(out_free, sb = NULL); - } - - err = obd_connect(&sbi->ll_mdc_conn, obd, sbi->ll_sb_uuid, - ptlrpc_recovd, ll_recover); - if (err) { - CERROR("cannot connect to %s: rc = %d\n", mdc, err); - GOTO(out_free, sb = NULL); - } - -#warning Peter: is this the right place to raise the connection level? - mdc_conn = sbi2mdc(sbi)->cl_import.imp_connection; - mdc_conn->c_level = LUSTRE_CONN_FULL; - list_add(&mdc_conn->c_sb_chain, &sbi->ll_conn_chain); - - obd = class_uuid2obd(osc); - if (!obd) { - CERROR("OSC %s: not setup or attached\n", osc); - GOTO(out_mdc, sb = NULL); - } - - err = obd_connect(&sbi->ll_osc_conn, obd, sbi->ll_sb_uuid, - ptlrpc_recovd, ll_recover); - if (err) { - CERROR("cannot connect to %s: rc = %d\n", osc, err); - GOTO(out_mdc, sb = NULL); - } - - /* XXX: need to store the last_* values somewhere */ - err = mdc_getstatus(&sbi->ll_mdc_conn, &rootfid, &last_committed, - &last_xid, &request); - ptlrpc_req_finished(request); - if (err) { - CERROR("cannot mds_connect: rc = %d\n", err); - GOTO(out_mdc, sb = NULL); - } - CDEBUG(D_SUPER, "rootfid %Ld\n", (unsigned long long)rootfid.id); - sbi->ll_rootino = rootfid.id; - - memset(&osfs, 0, sizeof(osfs)); - request = NULL; - err = mdc_statfs(&sbi->ll_mdc_conn, &osfs, &request); - ptlrpc_req_finished(request); - sb->s_blocksize = osfs.os_bsize; - sb->s_blocksize_bits = log2(osfs.os_bsize); - sb->s_magic = LL_SUPER_MAGIC; - sb->s_maxbytes = (1ULL << (32 + 9)) - osfs.os_bsize; - - sb->s_op = &ll_super_operations; - - /* make root inode */ - request = NULL; - err = mdc_getattr(&sbi->ll_mdc_conn, sbi->ll_rootino, S_IFDIR, - OBD_MD_FLNOTOBD|OBD_MD_FLBLOCKS, 0, &request); - if (err) { - CERROR("mdc_getattr failed for root: rc = %d\n", err); - GOTO(out_request, sb = NULL); - } - - /* initialize committed transaction callback daemon */ - spin_lock_init(&sbi->ll_commitcbd_lock); - init_waitqueue_head(&sbi->ll_commitcbd_waitq); - init_waitqueue_head(&sbi->ll_commitcbd_ctl_waitq); - sbi->ll_commitcbd_flags = 0; - err = ll_commitcbd_setup(sbi); - if (err) { - CERROR("failed to start commit callback daemon: rc = %d\n",err); - GOTO(out_request, sb = NULL); - } - - lic.lic_body = lustre_msg_buf(request->rq_repmsg, 0); - lic.lic_lmm = NULL; - root = iget5_locked(sb, sbi->ll_rootino, NULL, - ll_read_inode2, &lic); - - if (root) { - sb->s_root = d_alloc_root(root); - } else { - CERROR("lustre_lite: bad iget4 for root\n"); - GOTO(out_cdb, sb = NULL); - } - - ptlrpc_req_finished(request); - -out_dev: - if (mdc) - OBD_FREE(mdc, strlen(mdc) + 1); - if (osc) - OBD_FREE(osc, strlen(osc) + 1); - - RETURN(0); - -out_cdb: - ll_commitcbd_cleanup(sbi); -out_request: - ptlrpc_req_finished(request); - obd_disconnect(&sbi->ll_osc_conn); -out_mdc: - obd_disconnect(&sbi->ll_mdc_conn); -out_free: - OBD_FREE(sbi, sizeof(*sbi)); - - MOD_DEC_USE_COUNT; - goto out_dev; -} /* ll_fill_super */ - -struct super_block * ll_get_sb(struct file_system_type *fs_type, - int flags, char *devname, void * data) -{ - return get_sb_nodev(fs_type, flags, data, ll_fill_super); -} - -static void ll_put_super(struct super_block *sb) -{ - struct ll_sb_info *sbi = ll_s2sbi(sb); - - ENTRY; - list_del(&sbi->ll_conn_chain); - ll_commitcbd_cleanup(sbi); - obd_disconnect(&sbi->ll_osc_conn); - obd_disconnect(&sbi->ll_mdc_conn); - OBD_FREE(sbi, sizeof(*sbi)); - - MOD_DEC_USE_COUNT; - EXIT; -} /* ll_put_super */ - -static void ll_clear_inode(struct inode *inode) -{ - ENTRY; - - if (atomic_read(&inode->i_count) == 0) { - struct ll_inode_info *lli = ll_i2info(inode); - struct lov_stripe_md *lsm = lli->lli_smd; - char *symlink_name = lli->lli_symlink_name; - - if (lsm) { - OBD_FREE(lsm, ll_ost_easize(inode->i_sb)); - lli->lli_smd = NULL; - } - if (symlink_name) { - OBD_FREE(symlink_name, strlen(symlink_name) + 1); - lli->lli_symlink_name = NULL; - } - } - EXIT; -} - -static void ll_delete_inode(struct inode *inode) -{ - ENTRY; - if (S_ISREG(inode->i_mode)) { - int err; - struct obdo *oa; - struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd; - - if (!lsm) - GOTO(out, -EINVAL); - - if (lsm->lsm_object_id == 0) { - CERROR("This really happens\n"); - /* No obdo was ever created */ - GOTO(out, 0); - } - - oa = obdo_alloc(); - if (oa == NULL) - GOTO(out, -ENOMEM); - - oa->o_id = lsm->lsm_object_id; - oa->o_easize = ll_mds_easize(inode->i_sb); - oa->o_mode = inode->i_mode; - oa->o_valid = OBD_MD_FLID | OBD_MD_FLEASIZE | OBD_MD_FLTYPE; - - err = obd_destroy(ll_i2obdconn(inode), oa, lsm); - obdo_free(oa); - CDEBUG(D_SUPER, "obd destroy of objid "LPX64" error %d\n", - lsm->lsm_object_id, err); - } -out: - clear_inode(inode); - EXIT; -} - -/* like inode_setattr, but doesn't mark the inode dirty */ -static int ll_attr2inode(struct inode * inode, struct iattr * attr, int trunc) -{ - unsigned int ia_valid = attr->ia_valid; - int error = 0; - - if ((ia_valid & ATTR_SIZE) && trunc) { - error = vmtruncate(inode, attr->ia_size); - if (error) - goto out; - } else if (ia_valid & ATTR_SIZE) - inode->i_size = attr->ia_size; - - if (ia_valid & ATTR_UID) - inode->i_uid = attr->ia_uid; - if (ia_valid & ATTR_GID) - inode->i_gid = attr->ia_gid; - if (ia_valid & ATTR_ATIME) - inode->i_atime = attr->ia_atime; - if (ia_valid & ATTR_MTIME) - inode->i_mtime = attr->ia_mtime; - if (ia_valid & ATTR_CTIME) - inode->i_ctime = attr->ia_ctime; - if (ia_valid & ATTR_MODE) { - inode->i_mode = attr->ia_mode; - if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) - inode->i_mode &= ~S_ISGID; - } -out: - return error; -} - -int ll_inode_setattr(struct inode *inode, struct iattr *attr, int do_trunc) -{ - struct ptlrpc_request *request = NULL; - struct ll_sb_info *sbi = ll_i2sbi(inode); - int err; - - ENTRY; - - /* change incore inode */ - ll_attr2inode(inode, attr, do_trunc); - - err = mdc_setattr(&sbi->ll_mdc_conn, inode, attr, &request); - if (err) - CERROR("mdc_setattr fails (%d)\n", err); - - ptlrpc_req_finished(request); - - RETURN(err); -} - -int ll_setattr(struct dentry *de, struct iattr *attr) -{ - int rc = inode_change_ok(de->d_inode, attr); - - if (rc) - return rc; - - return ll_inode_setattr(de->d_inode, attr, 1); -} - -static int ll_statfs(struct super_block *sb, struct statfs *sfs) -{ - struct ptlrpc_request *request = NULL; - struct ll_sb_info *sbi = ll_s2sbi(sb); - struct obd_statfs osfs; - int rc; - ENTRY; - - memset(sfs, 0, sizeof(*sfs)); - rc = mdc_statfs(&sbi->ll_mdc_conn, &osfs, &request); - statfs_unpack(sfs, &osfs); - ptlrpc_req_finished(request); - if (rc) - CERROR("mdc_statfs fails: rc = %d\n", rc); - else - CDEBUG(D_SUPER, "mdc_statfs shows blocks "LPU64"/"LPU64 - " objects "LPU64"/"LPU64"\n", - osfs.os_bavail, osfs.os_blocks, - osfs.os_ffree, osfs.os_files); - - /* temporary until mds_statfs returns statfs info for all OSTs */ - if (!rc) { - rc = obd_statfs(&sbi->ll_osc_conn, &osfs); - if (rc) { - CERROR("obd_statfs fails: rc = %d\n", rc); - GOTO(out, rc); - } - CDEBUG(D_SUPER, "obd_statfs shows blocks "LPU64"/"LPU64 - " objects "LPU64"/"LPU64"\n", - osfs.os_bavail, osfs.os_blocks, - osfs.os_ffree, osfs.os_files); - - while (osfs.os_blocks > ~0UL) { - sfs->f_bsize <<= 1; - - osfs.os_blocks >>= 1; - osfs.os_bfree >>= 1; - osfs.os_bavail >>= 1; - } - sfs->f_blocks = osfs.os_blocks; - sfs->f_bfree = osfs.os_bfree; - sfs->f_bavail = osfs.os_bavail; - if (osfs.os_ffree < (__u64)sfs->f_ffree) - sfs->f_ffree = osfs.os_ffree; - } - -out: - RETURN(rc); -} - -void ll_update_inode(struct inode *inode, struct mds_body *body) -{ - if (body->valid & OBD_MD_FLID) - inode->i_ino = body->ino; - if (body->valid & OBD_MD_FLATIME) - inode->i_atime = body->atime; - if (body->valid & OBD_MD_FLMTIME) - inode->i_mtime = body->mtime; - if (body->valid & OBD_MD_FLCTIME) - inode->i_ctime = body->ctime; - if (body->valid & OBD_MD_FLMODE) - inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT); - if (body->valid & OBD_MD_FLTYPE) - inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT); - if (body->valid & OBD_MD_FLUID) - inode->i_uid = body->uid; - if (body->valid & OBD_MD_FLGID) - inode->i_gid = body->gid; - if (body->valid & OBD_MD_FLFLAGS) - inode->i_flags = body->flags; - if (body->valid & OBD_MD_FLNLINK) - inode->i_nlink = body->nlink; - if (body->valid & OBD_MD_FLGENER) - inode->i_generation = body->generation; - if (body->valid & OBD_MD_FLRDEV) - inode->i_rdev = to_kdev_t(body->rdev); - if (body->valid & OBD_MD_FLSIZE) - inode->i_size = body->size; -} - -int ll_read_inode2(struct inode *inode, void *opaque) -{ - struct ll_read_inode2_cookie *lic = opaque; - struct mds_body *body = lic->lic_body; - struct ll_inode_info *lli = ll_i2info(inode); - ENTRY; - - sema_init(&lli->lli_open_sem, 1); - - /* core attributes first */ - ll_update_inode(inode, body); - - //if (body->valid & OBD_MD_FLEASIZE) - if (lic && lic->lic_lmm) { - struct lov_mds_md *lmm = lic->lic_lmm; - int size; - - if (lmm->lmm_easize != ll_mds_easize(inode->i_sb)) { - CERROR("Striping metadata size error %ld\n", - inode->i_ino); - LBUG(); - } - size = ll_ost_easize(inode->i_sb); - OBD_ALLOC(lli->lli_smd, size); - if (!lli->lli_smd) { - CERROR("No memory for %d\n", size); - LBUG(); - } - lov_unpackmd(lli->lli_smd, lmm); - } else { - lli->lli_smd = NULL; - } - - /* Get the authoritative file size */ - if (lli->lli_smd && (inode->i_mode & S_IFREG)) { - int rc; - - rc = ll_file_size(inode, lli->lli_smd); - if (rc) { - CERROR("ll_file_size: %d\n", rc); - /* FIXME: need to somehow prevent inode creation */ - LBUG(); - } - } - - /* OIDEBUG(inode); */ - - if (S_ISREG(inode->i_mode)) { - inode->i_op = &ll_file_inode_operations; - inode->i_fop = &ll_file_operations; - inode->i_mapping->a_ops = &ll_aops; - EXIT; - } else if (S_ISDIR(inode->i_mode)) { - inode->i_op = &ll_dir_inode_operations; - inode->i_fop = &ll_dir_operations; - inode->i_mapping->a_ops = &ll_dir_aops; - EXIT; - } else if (S_ISLNK(inode->i_mode)) { - inode->i_op = &ll_fast_symlink_inode_operations; - EXIT; - } else { - init_special_inode(inode, inode->i_mode, - kdev_t_to_nr(inode->i_rdev)); - EXIT; - } - return 0; -} - -static inline void invalidate_request_list(struct list_head *req_list) -{ - struct list_head *tmp, *n; - list_for_each_safe(tmp, n, req_list) { - struct ptlrpc_request *req = - list_entry(tmp, struct ptlrpc_request, rq_list); - CERROR("invalidating req xid %d op %d to %s:%d\n", - (unsigned long long)req->rq_xid, req->rq_reqmsg->opc, - req->rq_connection->c_remote_uuid, - req->rq_import->imp_client->cli_request_portal); - req->rq_flags |= PTL_RPC_FL_ERR; - wake_up(&req->rq_wait_for_rep); - } -} - -void ll_umount_begin(struct super_block *sb) -{ - struct ll_sb_info *sbi = ll_s2sbi(sb); - struct list_head *ctmp; - - ENTRY; - - list_for_each(ctmp, &sbi->ll_conn_chain) { - struct ptlrpc_connection *conn; - conn = list_entry(ctmp, struct ptlrpc_connection, c_sb_chain); - - spin_lock(&conn->c_lock); - conn->c_flags |= CONN_INVALID; - invalidate_request_list(&conn->c_sending_head); - invalidate_request_list(&conn->c_delayed_head); - spin_unlock(&conn->c_lock); - } - - EXIT; -} - +#include +#include "llite_internal.h" static kmem_cache_t *ll_inode_cachep; static struct inode *ll_alloc_inode(struct super_block *sb) { - struct ll_inode_info *lli; - lli = kmem_cache_alloc(ll_inode_cachep, SLAB_KERNEL); - if (!lli) - return NULL; + struct ll_inode_info *lli; + lprocfs_counter_incr((ll_s2sbi(sb))->ll_stats, LPROC_LL_ALLOC_INODE); + OBD_SLAB_ALLOC(lli, ll_inode_cachep, SLAB_KERNEL, sizeof *lli); + if (lli == NULL) + return NULL; - memset(lli, 0, (char *)&lli->lli_vfs_inode - (char *)lli); - sema_init(&lli->lli_open_sem, 1); + inode_init_once(&lli->lli_vfs_inode); + ll_lli_init(lli); - return &lli->lli_vfs_inode; + return &lli->lli_vfs_inode; } static void ll_destroy_inode(struct inode *inode) { - kmem_cache_free(ll_inode_cachep, ll_i2info(inode)); + struct ll_inode_info *ptr = ll_i2info(inode); + OBD_SLAB_FREE(ptr, ll_inode_cachep, sizeof(*ptr)); } static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags) { - struct ll_inode_info *lli = foo; + struct ll_inode_info *lli = foo; - if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == - SLAB_CTOR_CONSTRUCTOR) - inode_init_once(&lli->lli_vfs_inode); + if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == + SLAB_CTOR_CONSTRUCTOR) + inode_init_once(&lli->lli_vfs_inode); } - + int ll_init_inodecache(void) { - ll_inode_cachep = kmem_cache_create("lustre_inode_cache", - sizeof(struct ll_inode_info), - 0, SLAB_HWCACHE_ALIGN, - init_once, NULL); - if (ll_inode_cachep == NULL) - return -ENOMEM; - return 0; + ll_inode_cachep = kmem_cache_create("lustre_inode_cache", + sizeof(struct ll_inode_info), + 0, SLAB_HWCACHE_ALIGN, + init_once, NULL); + if (ll_inode_cachep == NULL) + return -ENOMEM; + return 0; } void ll_destroy_inodecache(void) { - if (kmem_cache_destroy(ll_inode_cachep)) - CERROR("ll_inode_cache: not all structures were freed\n"); +#ifdef HAVE_KMEM_CACHE_DESTROY_INT + int rc; + + rc = kmem_cache_destroy(ll_inode_cachep); + LASSERTF(rc == 0, "ll_inode_cache: not all structures were freed\n"); +#else + kmem_cache_destroy(ll_inode_cachep); +#endif } - - /* exported operations */ -struct super_operations ll_super_operations = -{ - alloc_inode: ll_alloc_inode, - destroy_inode: ll_destroy_inode, - clear_inode: ll_clear_inode, - delete_inode: ll_delete_inode, - put_super: ll_put_super, - statfs: ll_statfs, - umount_begin: ll_umount_begin +struct super_operations lustre_super_operations = +{ + .alloc_inode = ll_alloc_inode, + .destroy_inode = ll_destroy_inode, + .clear_inode = ll_clear_inode, + .put_super = ll_put_super, + .statfs = ll_statfs, + .umount_begin = ll_umount_begin, + .remount_fs = ll_remount_fs, }; -struct file_system_type lustre_lite_fs_type = { - .owner = THIS_MODULE, - .name = "lustre_lite", - .get_sb = ll_get_sb, - .kill_sb = kill_litter_super, -}; + +void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg)); static int __init init_lustre_lite(void) { - int rc; - printk(KERN_INFO "Lustre Lite 0.5.14, info@clusterfs.com\n"); + int i, rc, seed[2]; + struct timeval tv; + lnet_process_id_t lnet_id; + + printk(KERN_INFO "Lustre: Lustre Client File System; " + "info@clusterfs.com\n"); rc = ll_init_inodecache(); - if (rc) + if (rc) return -ENOMEM; ll_file_data_slab = kmem_cache_create("ll_file_data", sizeof(struct ll_file_data), 0, SLAB_HWCACHE_ALIGN, NULL, NULL); - if (ll_file_data_slab == NULL) { + if (ll_file_data_slab == NULL) { ll_destroy_inodecache(); return -ENOMEM; } - return register_filesystem(&lustre_lite_fs_type); + + proc_lustre_fs_root = proc_lustre_root ? + proc_mkdir("llite", proc_lustre_root) : NULL; + + ll_register_cache(&ll_cache_definition); + + lustre_register_client_fill_super(ll_fill_super); + lustre_register_client_process_config(ll_process_config); + + ll_get_random_bytes(seed, sizeof(seed)); + + /* Nodes with small feet have little entropy + * the NID for this node gives the most entropy in the low bits */ + for (i=0; ; i++) { + if (LNetGetId(i, &lnet_id) == -ENOENT) { + break; + } + if (LNET_NETTYP(LNET_NIDNET(lnet_id.nid)) != LOLND) { + seed[0] ^= LNET_NIDADDR(lnet_id.nid); + } + } + + do_gettimeofday(&tv); + ll_srand(tv.tv_sec ^ seed[0], tv.tv_usec ^ seed[1]); + + return rc; } static void __exit exit_lustre_lite(void) { - unregister_filesystem(&lustre_lite_fs_type); +#ifdef HAVE_KMEM_CACHE_DESTROY_INT + int rc; +#endif + + lustre_register_client_fill_super(NULL); + lustre_register_client_process_config(NULL); + + ll_unregister_cache(&ll_cache_definition); + ll_destroy_inodecache(); +#ifdef HAVE_KMEM_CACHE_DESTROY_INT + rc = kmem_cache_destroy(ll_file_data_slab); + LASSERTF(rc == 0, "couldn't destroy ll_file_data slab\n"); +#else kmem_cache_destroy(ll_file_data_slab); +#endif + if (ll_async_page_slab) { +#ifdef HAVE_KMEM_CACHE_DESTROY_INT + rc = kmem_cache_destroy(ll_async_page_slab); + LASSERTF(rc == 0, "couldn't destroy ll_async_page slab\n"); +#else + kmem_cache_destroy(ll_async_page_slab); +#endif + } + + if (proc_lustre_fs_root) + lprocfs_remove(&proc_lustre_fs_root); } MODULE_AUTHOR("Cluster File Systems, Inc. "); -MODULE_DESCRIPTION("Lustre Lite Client File System v1.0"); +MODULE_DESCRIPTION("Lustre Lite Client File System"); MODULE_LICENSE("GPL"); module_init(init_lustre_lite); module_exit(exit_lustre_lite); -#endif