-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Lustre Light Super operations
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
+ * 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.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * 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 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.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
- * 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.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * 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.
+ * Copyright (c) 2011, 2016, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_LLITE
#include <linux/module.h>
-#include <linux/random.h>
+#include <linux/types.h>
#include <linux/version.h>
-#include <linux/lustre_lite.h>
-#include <linux/lustre_ha.h>
-#include <linux/lustre_dlm.h>
+#include <lustre_ha.h>
+#include <lustre_dlm.h>
#include <linux/init.h>
#include <linux/fs.h>
-#include <linux/lprocfs_status.h>
+#include <linux/random.h>
+#include <lprocfs_status.h>
#include "llite_internal.h"
+#include "vvp_internal.h"
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-#include <asm/statfs.h>
-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;
-
-/* /proc/lustre/llite root that tracks llite mount points */
-struct proc_dir_entry *proc_lustre_fs_root = NULL;
-/* lproc_llite.c */
-extern int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
- struct super_block *sb,
- char *osc, char *mdc);
-
-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);
-
-extern int ll_proc_namespace(struct super_block* sb, char* osc, char* mdc);
-
-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 struct kmem_cache *ll_inode_cachep;
-static int ll_set_opt(const char *opt, char *data, int fl)
+static struct inode *ll_alloc_inode(struct super_block *sb)
{
- ENTRY;
+ struct ll_inode_info *lli;
+ OBD_SLAB_ALLOC_PTR_GFP(lli, ll_inode_cachep, GFP_NOFS);
+ if (lli == NULL)
+ return NULL;
- CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
- if (strncmp(opt, data, strlen(opt)))
- RETURN(0);
- else
- RETURN(fl);
+ inode_init_once(&lli->lli_vfs_inode);
+ return &lli->lli_vfs_inode;
}
-static void ll_options(char *options, char **ost, char **mds, int *flags)
+static void ll_inode_destroy_callback(struct rcu_head *head)
{
- 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;
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ struct ll_inode_info *ptr = ll_i2info(inode);
+ llcrypt_free_inode(inode);
+ OBD_SLAB_FREE_PTR(ptr, ll_inode_cachep);
}
-#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;
- struct ptlrpc_request *request = NULL;
- struct ptlrpc_connection *mdc_conn;
- struct ll_read_inode2_cookie lic;
- class_uuid_t uuid;
-
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:\n");
-
- OBD_ALLOC(sbi, sizeof(*sbi));
- if (!sbi)
- RETURN(-ENOMEM);
-
- INIT_LIST_HEAD(&sbi->ll_conn_chain);
- INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
- 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_name2obd(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);
- if (err) {
- CERROR("cannot connect to %s: rc = %d\n", mdc, err);
- GOTO(out_free, sb = NULL);
- }
-
- mdc_conn = sbi2mdc(sbi)->cl_import->imp_connection;
-
- obd = class_name2obd(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);
- if (err) {
- CERROR("cannot connect to %s: rc = %d\n", osc, err);
- GOTO(out_mdc, sb = NULL);
- }
-
- err = mdc_getstatus(&sbi->ll_mdc_conn, &rootfid);
- if (err) {
- CERROR("cannot mds_connect: rc = %d\n", err);
- GOTO(out_osc, sb = NULL);
- }
- CDEBUG(D_SUPER, "rootfid "LPU64"\n", rootfid.id);
- sbi->ll_rootino = rootfid.id;
-
- memset(&osfs, 0, sizeof(osfs));
- err = obd_statfs(&sbi->ll_mdc_conn, &osfs);
- sb->s_blocksize = osfs.os_bsize;
- sb->s_blocksize_bits = log2(osfs.os_bsize);
- sb->s_magic = LL_SUPER_MAGIC;
- sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
-
- sb->s_op = &ll_super_operations;
-
- /* make root inode
- * XXX: move this to after cbd setup? */
- err = mdc_getattr(&sbi->ll_mdc_conn, &rootfid,
- OBD_MD_FLNOTOBD|OBD_MD_FLBLOCKS, 0, &request);
- if (err) {
- CERROR("mdc_getattr failed for root: rc = %d\n", err);
- GOTO(out_osc, 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);
- ptlrpc_req_finished (request);
- GOTO(out_osc, sb = NULL);
- }
-
- lic.lic_body = lustre_msg_buf(request->rq_repmsg, 0, sizeof (*lic.lic_body));
- LASSERT (lic.lic_body != NULL); /* checked by mdc_getattr() */
- LASSERT_REPSWABBED (request, 0); /* swabbed by mdc_getattr() */
-
- lic.lic_lsm = NULL;
-
- root = iget5_locked(sb, sbi->ll_rootino, NULL,
- ll_read_inode2, &lic);
-
- ptlrpc_req_finished(request);
-
- if (root == NULL || is_bad_inode(root)) {
- /* XXX might need iput() for bad inode */
- CERROR("lustre_lite: bad iget5 for root\n");
- GOTO(out_cbd, sb = NULL);
- }
-
- sb->s_root = d_alloc_root(root);
- root->i_state &= ~(I_LOCK | I_NEW);
- printk("AMRUT 1\n");
- if (proc_lustre_fs_root) {
- err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
- osc, mdc);
- if (err < 0)
- CERROR("could not register mount in /proc/lustre");
- }
-
-out_dev:
- if (mdc)
- OBD_FREE(mdc, strlen(mdc) + 1);
- if (osc)
- OBD_FREE(osc, strlen(osc) + 1);
- printk("AMRUT 2\n");
-
- RETURN(0);
-
-out_cbd:
- ll_commitcbd_cleanup(sbi);
-out_osc:
- obd_disconnect(&sbi->ll_osc_conn, 0);
-out_mdc:
- obd_disconnect(&sbi->ll_mdc_conn, 0);
-out_free:
- lprocfs_unregister_mountpoint(sbi);
- OBD_FREE(sbi, sizeof(*sbi));
-
- goto out_dev;
-} /* ll_fill_super */
-
-
-int ll_setattr_raw(struct inode *inode, struct iattr *attr)
-{
- struct ptlrpc_request *request = NULL;
- struct ll_sb_info *sbi = ll_i2sbi(inode);
- struct mdc_op_data op_data;
- int err = 0;
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
-
- LPROC_COUNTER_INODE_INCBY1(inode, LPROC_LL_SETATTR);
- if ((attr->ia_valid & ATTR_SIZE)) {
- /* writeback uses inode->i_size to determine how far out
- * its cached pages go. ll_truncate gets a PW lock, canceling
- * our lock, _after_ it has updated i_size. this can confuse
- * us into zero extending the file to the newly truncated
- * size, and this has bad implications for a racing o_append.
- * if we're extending our size we need to flush the pages
- * with the correct i_size before vmtruncate stomps on
- * the new i_size. again, this can only find pages to
- * purge if the PW lock that generated them is still held.
- */
- if ( attr->ia_size > inode->i_size ) {
- filemap_fdatasync(inode->i_mapping);
- filemap_fdatawait(inode->i_mapping);
- }
- err = vmtruncate(inode, attr->ia_size);
- if (err)
- RETURN(err);
- }
-
- /* Don't send size changes to MDS to avoid "fast EA" problems, and
- * also avoid a pointless RPC (we get file size from OST anyways).
- */
- attr->ia_valid &= ~ATTR_SIZE;
- if (!attr->ia_valid)
- RETURN(0);
-
- ll_prepare_mdc_op_data(&op_data, inode, NULL, NULL, 0, 0);
-
- err = mdc_setattr(&sbi->ll_mdc_conn, &op_data,
- attr, NULL, 0, &request);
- if (err)
- CERROR("mdc_setattr fails: err = %d\n", err);
-
- ptlrpc_req_finished(request);
-
- if (S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_MTIME_SET) {
- struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
- struct obdo oa;
- int err2;
-
- CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
- inode->i_ino, attr->ia_mtime);
- oa.o_id = lsm->lsm_object_id;
- oa.o_mode = S_IFREG;
- oa.o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLMTIME;
- oa.o_mtime = LTIME_S(attr->ia_mtime);
- err2 = obd_setattr(&sbi->ll_osc_conn, &oa, lsm, NULL);
- if (err2) {
- CERROR("obd_setattr fails: rc=%d\n", err);
- if (!err)
- err = err2;
- }
- }
- RETURN(err);
-}
-struct super_block * ll_get_sb(struct file_system_type *fs_type,
- int flags, char *devname, void * data)
+static void ll_destroy_inode(struct inode *inode)
{
- return get_sb_nodev(fs_type, flags, data, ll_fill_super);
+ call_rcu(&inode->i_rcu, ll_inode_destroy_callback);
}
-static void ll_put_super(struct super_block *sb)
-{
- struct ll_sb_info *sbi = ll_s2sbi(sb);
- struct list_head *tmp, *next;
- struct ll_fid rootfid;
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:\n");
-
- list_del(&sbi->ll_conn_chain);
- ll_commitcbd_cleanup(sbi);
- obd_disconnect(&sbi->ll_osc_conn, 0);
-
- /* NULL request to force sync on the MDS, and get the last_committed
- * value to flush remaining RPCs from the pending queue on client.
- *
- * XXX This should be an mdc_sync() call to sync the whole MDS fs,
- * which we can call for other reasons as well.
- */
- mdc_getstatus(&sbi->ll_mdc_conn, &rootfid);
-
- lprocfs_unregister_mountpoint(sbi);
- if (sbi->ll_proc_root) {
- lprocfs_remove(sbi->ll_proc_root);
- sbi->ll_proc_root = NULL;
- }
-
- obd_disconnect(&sbi->ll_mdc_conn, 0);
-
- spin_lock(&dcache_lock);
- list_for_each_safe(tmp, next, &sbi->ll_orphan_dentry_list){
- struct dentry *dentry = list_entry(tmp, struct dentry, d_hash);
- shrink_dcache_parent(dentry);
- }
- spin_unlock(&dcache_lock);
-
- OBD_FREE(sbi, sizeof(*sbi));
-
- EXIT;
-} /* ll_put_super */
-
-static void ll_clear_inode(struct inode *inode)
+static int ll_drop_inode(struct inode *inode)
{
- struct ll_sb_info *sbi = ll_i2sbi(inode);
- struct ll_inode_info *lli = ll_i2info(inode);
- int rc;
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
-
-#warning "Is there a reason we don't do this in 2.5, but we do in 2.4?"
-#if 0
- rc = ll_mdc_cancel_unused(&sbi->ll_mdc_conn, inode, LDLM_FL_NO_CALLBACK);
- if (rc < 0) {
- CERROR("ll_mdc_cancel_unused: %d\n", rc);
- /* XXX FIXME do something dramatic */
- }
-
- if (lli->lli_smd) {
- rc = obd_cancel_unused(&sbi->ll_osc_conn, lli->lli_smd, 0);
- if (rc < 0) {
- CERROR("obd_cancel_unused: %d\n", rc);
- /* XXX FIXME do something dramatic */
- }
- }
-#endif
-
- if (atomic_read(&inode->i_count) != 0)
- CERROR("clearing in-use inode %lu: count = %d\n",
- inode->i_ino, atomic_read(&inode->i_count));
+ int drop = generic_drop_inode(inode);
- if (lli->lli_smd) {
- obd_free_memmd(&sbi->ll_osc_conn, &lli->lli_smd);
- lli->lli_smd = NULL;
- }
+ if (!drop)
+ drop = llcrypt_drop_inode(inode);
- if (lli->lli_symlink_name) {
- OBD_FREE(lli->lli_symlink_name,strlen(lli->lli_symlink_name)+1);
- lli->lli_symlink_name = NULL;
- }
-
- EXIT;
+ return drop;
}
-#if 0
-static void ll_delete_inode(struct inode *inode)
-{
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
- if (S_ISREG(inode->i_mode)) {
- int err;
- struct obdo *oa;
- struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
-
- /* mcreate with no open */
- if (!lsm)
- GOTO(out, 0);
-
- 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_mode = inode->i_mode;
- oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE;
-
- err = obd_destroy(ll_i2obdconn(inode), oa, lsm);
- obdo_free(oa);
- if (err)
- CDEBUG(D_SUPER, "obd destroy objid "LPX64" error %d\n",
- lsm->lsm_object_id, err);
- }
-out:
- clear_inode(inode);
- EXIT;
-}
-#endif
-
-/* 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) {
- if (attr->ia_size > ll_file_maxbytes(inode)) {
- error = -EFBIG;
- goto out;
- }
- 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;
-}
+/* exported operations */
+struct super_operations lustre_super_operations =
+{
+ .alloc_inode = ll_alloc_inode,
+ .destroy_inode = ll_destroy_inode,
+ .drop_inode = ll_drop_inode,
+ .evict_inode = ll_delete_inode,
+ .put_super = ll_put_super,
+ .statfs = ll_statfs,
+ .umount_begin = ll_umount_begin,
+ .remount_fs = ll_remount_fs,
+ .show_options = ll_show_options,
+};
-int ll_inode_setattr(struct inode *inode, struct iattr *attr, int do_trunc)
+static int __init lustre_init(void)
{
- struct ptlrpc_request *request = NULL;
- struct ll_sb_info *sbi = ll_i2sbi(inode);
- int err = 0;
-
- ENTRY;
-
- /* change incore inode */
- err = ll_attr2inode(inode, attr, do_trunc);
- if (err)
- RETURN(err);
-
- /* Don't send size changes to MDS to avoid "fast EA" problems, and
- * also avoid a pointless RPC (we get file size from OST anyways).
- */
- attr->ia_valid &= ~ATTR_SIZE;
- if (attr->ia_valid) {
- struct mdc_op_data op_data;
-
- ll_prepare_mdc_op_data(&op_data, inode, NULL, NULL, 0, 0);
-
- err = mdc_setattr(&sbi->ll_mdc_conn, &op_data,
- attr, NULL, 0, &request);
- if (err)
- CERROR("mdc_setattr fails: err = %d\n", err);
-
- ptlrpc_req_finished(request);
- if (S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_MTIME_SET) {
- struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
- struct obdo oa;
- int err2;
-
- CDEBUG(D_ERROR, "setting mtime on OST\n");
- oa.o_id = lsm->lsm_object_id;
- oa.o_mode = S_IFREG;
- oa.o_valid = OBD_MD_FLID |OBD_MD_FLTYPE |OBD_MD_FLMTIME;
- oa.o_mtime = LTIME_S(attr->ia_mtime);
- err2 = obd_setattr(&sbi->ll_osc_conn, &oa, lsm, NULL);
- if (err2) {
- CERROR("obd_setattr fails: rc=%d\n", err);
- if (!err)
- err = err2;
- }
- }
- }
-
- RETURN(err);
-}
+ struct lnet_process_id lnet_id;
+ int i, rc;
+ unsigned long lustre_inode_cache_flags;
-int ll_setattr(struct dentry *de, struct iattr *attr)
-{
- int rc = inode_change_ok(de->d_inode, attr);
- CDEBUG(D_VFSTRACE, "VFS Op:name=%s\n", de->d_name.name);
- if (rc)
- return rc;
+ BUILD_BUG_ON(sizeof(LUSTRE_VOLATILE_HDR) !=
+ LUSTRE_VOLATILE_HDR_LEN + 1);
- LPROC_COUNTER_INODE_INCBY1((de->d_inode), LPROC_LL_SETATTR);
- return ll_inode_setattr(de->d_inode, attr, 1);
-}
+ /* print an address of _any_ initialized kernel symbol from this
+ * module, to allow debugging with gdb that doesn't support data
+ * symbols from modules.*/
+ CDEBUG(D_INFO, "Lustre client module (%p).\n",
+ &lustre_super_operations);
-static int ll_statfs(struct super_block *sb, struct statfs *sfs)
-{
- struct ll_sb_info *sbi = ll_s2sbi(sb);
- struct obd_statfs osfs;
- int rc;
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:\n");
-
- LPROC_COUNTER_SBI_INCBY1(sbi, LPROC_LL_STAFS);
- memset(sfs, 0, sizeof(*sfs));
- rc = obd_statfs(&sbi->ll_mdc_conn, &osfs);
- statfs_unpack(sfs, &osfs);
- 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_files = (sfs->f_files - sfs->f_ffree) +
- osfs.os_ffree;
- sfs->f_ffree = osfs.os_ffree;
- }
- }
-
-out:
- RETURN(rc);
-}
+ lustre_inode_cache_flags = SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT |
+ SLAB_MEM_SPREAD;
+#ifdef SLAB_ACCOUNT
+ lustre_inode_cache_flags |= SLAB_ACCOUNT;
+#endif
-void ll_update_inode(struct inode *inode, struct mds_body *body,
- struct lov_stripe_md *lsm)
-{
- struct ll_inode_info *lli = ll_i2info(inode);
-
- LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
- if (lsm != NULL) {
- if (lli->lli_smd == NULL) {
- lli->lli_smd = lsm;
- lli->lli_maxbytes = lsm->lsm_maxbytes;
- if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
- lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
- } else {
- LASSERT (!memcmp (lli->lli_smd, lsm, sizeof (*lsm)));
- }
- }
-
- if (body->valid & OBD_MD_FLID)
- inode->i_ino = body->ino;
- if (body->valid & OBD_MD_FLATIME)
- LTIME_S(inode->i_atime) = body->atime;
- if (body->valid & OBD_MD_FLMTIME)
- LTIME_S(inode->i_mtime) = body->mtime;
- if (body->valid & OBD_MD_FLCTIME)
- LTIME_S(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;
- if (body->valid & OBD_MD_FLBLOCKS)
- inode->i_blocks = body->blocks;
-}
+ ll_inode_cachep = kmem_cache_create("lustre_inode_cache",
+ sizeof(struct ll_inode_info),
+ 0, lustre_inode_cache_flags, NULL);
+ if (ll_inode_cachep == NULL)
+ GOTO(out_cache, rc = -ENOMEM);
-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);
- int rc = 0;
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
-
- sema_init(&lli->lli_open_sem, 1);
- /* these are 2.4 only, but putting them here for consistency.. */
- spin_lock_init(&lli->lli_read_extent_lock);
- INIT_LIST_HEAD(&lli->lli_read_extents);
- ll_lldo_init(&lli->lli_dirty);
- lli->lli_flags = 0;
- lli->lli_maxbytes = LUSTRE_STRIPE_MAXBYTES;
-
- LASSERT(!lli->lli_smd);
-
- /* core attributes first */
- ll_update_inode(inode, body, lic ? lic->lic_lsm : NULL);
-
- /* 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 {
- inode->i_op = &ll_special_inode_operations;
- init_special_inode(inode, inode->i_mode,
- kdev_t_to_nr(inode->i_rdev));
- EXIT;
- }
-
- return rc;
-}
+ ll_file_data_slab = kmem_cache_create("ll_file_data",
+ sizeof(struct ll_file_data), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (ll_file_data_slab == NULL)
+ GOTO(out_cache, rc = -ENOMEM);
+ pcc_inode_slab = kmem_cache_create("ll_pcc_inode",
+ sizeof(struct pcc_inode), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (pcc_inode_slab == NULL)
+ GOTO(out_cache, rc = -ENOMEM);
-void ll_umount_begin(struct super_block *sb)
-{
- struct ll_sb_info *sbi = ll_s2sbi(sb);
- struct obd_device *obd;
- struct obd_ioctl_data ioc_data = { 0 };
-
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:\n");
-
- obd = class_conn2obd(&sbi->ll_mdc_conn);
- obd->obd_no_recov = 1;
- obd_iocontrol(IOC_OSC_SET_ACTIVE, &sbi->ll_mdc_conn, sizeof ioc_data,
- &ioc_data, NULL);
-
- obd = class_conn2obd(&sbi->ll_osc_conn);
- obd->obd_no_recov = 1;
- obd_iocontrol(IOC_OSC_SET_ACTIVE, &sbi->ll_osc_conn, sizeof ioc_data,
- &ioc_data, NULL);
-
- /* Really, we'd like to wait until there are no requests outstanding,
- * and then continue. For now, we just invalidate the requests,
- * schedule, and hope.
- */
- schedule();
-
- EXIT;
-}
+ rc = llite_tunables_register();
+ if (rc)
+ GOTO(out_cache, rc);
-static kmem_cache_t *ll_inode_cachep;
+ /* 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;
-static struct inode *ll_alloc_inode(struct super_block *sb)
-{
- struct ll_inode_info *lli;
- LPROC_COUNTER_SBI_INCBY1((ll_s2sbi(sb)), 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);
- init_MUTEX(&lli->lli_size_valid_sem);
- lli->lli_maxbytes = LUSTRE_STRIPE_MAXBYTES;
-
- return &lli->lli_vfs_inode;
-}
+ add_device_randomness(&lnet_id.nid, sizeof(lnet_id.nid));
+ }
-static void ll_destroy_inode(struct inode *inode)
-{
- OBD_SLAB_FREE(ll_inode_cachep, ll_i2info(inode),
- sizeof(struct ll_inode_info));
-}
+ rc = vvp_global_init();
+ if (rc != 0)
+ GOTO(out_tunables, rc);
-static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
-{
- struct ll_inode_info *lli = foo;
+ cl_inode_fini_env = cl_env_alloc(&cl_inode_fini_refcheck,
+ LCT_REMEMBER | LCT_NOREF);
+ if (IS_ERR(cl_inode_fini_env))
+ GOTO(out_vvp, rc = PTR_ERR(cl_inode_fini_env));
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR)
- inode_init_once(&lli->lli_vfs_inode);
-}
+ cl_inode_fini_env->le_ctx.lc_cookie = 0x4;
-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;
-}
+ rc = ll_xattr_init();
+ if (rc != 0)
+ GOTO(out_inode_fini_env, rc);
-void ll_destroy_inodecache(void)
-{
- if (kmem_cache_destroy(ll_inode_cachep))
- CERROR("ll_inode_cache: not all structures were freed\n");
-}
+ lustre_register_super_ops(THIS_MODULE, ll_fill_super, ll_kill_super);
+ RETURN(0);
+out_inode_fini_env:
+ cl_env_put(cl_inode_fini_env, &cl_inode_fini_refcheck);
+out_vvp:
+ vvp_global_fini();
+out_tunables:
+ llite_tunables_unregister();
+out_cache:
+ kmem_cache_destroy(ll_inode_cachep);
+ kmem_cache_destroy(ll_file_data_slab);
+ kmem_cache_destroy(pcc_inode_slab);
+ return rc;
+}
-/* exported operations */
-struct super_operations ll_super_operations =
+static void __exit lustre_exit(void)
{
- 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
-};
+ lustre_register_super_ops(NULL, NULL, NULL);
+ llite_tunables_unregister();
-struct file_system_type lustre_lite_fs_type = {
- .owner = THIS_MODULE,
- .name = "lustre_lite",
- .get_sb = ll_get_sb,
- .kill_sb = kill_anon_super,
-};
+ ll_xattr_fini();
+ cl_env_put(cl_inode_fini_env, &cl_inode_fini_refcheck);
+ vvp_global_fini();
-static int __init init_lustre_lite(void)
-{
- int rc;
- printk(KERN_INFO "Lustre Lite Client File System; "
- "info@clusterfs.com\n");
- rc = ll_init_inodecache();
- 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) {
- ll_destroy_inodecache();
- return -ENOMEM;
- }
-
- proc_lustre_fs_root = proc_lustre_root ?
- proc_mkdir("llite", proc_lustre_root) : NULL;
-
- return register_filesystem(&lustre_lite_fs_type);
-}
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
-static void __exit exit_lustre_lite(void)
-{
- unregister_filesystem(&lustre_lite_fs_type);
- ll_destroy_inodecache();
- kmem_cache_destroy(ll_file_data_slab);
- if (proc_lustre_fs_root) {
- lprocfs_remove(proc_lustre_fs_root);
- proc_lustre_fs_root = NULL;
- }
+ kmem_cache_destroy(ll_inode_cachep);
+ kmem_cache_destroy(ll_file_data_slab);
+ kmem_cache_destroy(pcc_inode_slab);
}
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Lustre Lite Client File System");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
+MODULE_DESCRIPTION("Lustre Client File System");
+MODULE_VERSION(LUSTRE_VERSION_STRING);
MODULE_LICENSE("GPL");
-module_init(init_lustre_lite);
-module_exit(exit_lustre_lite);
-#endif
+module_init(lustre_init);
+module_exit(lustre_exit);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff