*
* 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
- *
- * 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2014, Intel Corporation.
+ * 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
+#define D_MOUNT (D_SUPER | D_CONFIG/*|D_WARNING */)
+
#include <linux/module.h>
#include <linux/types.h>
#include <linux/version.h>
#include <lustre_dlm.h>
#include <linux/init.h>
#include <linux/fs.h>
+#include <linux/random.h>
#include <lprocfs_status.h>
#include "llite_internal.h"
#include "vvp_internal.h"
static struct inode *ll_alloc_inode(struct super_block *sb)
{
struct ll_inode_info *lli;
- ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_ALLOC_INODE, 1);
OBD_SLAB_ALLOC_PTR_GFP(lli, ll_inode_cachep, GFP_NOFS);
if (lli == NULL)
return NULL;
return &lli->lli_vfs_inode;
}
-#ifdef HAVE_INODE_I_RCU
static void ll_inode_destroy_callback(struct rcu_head *head)
{
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);
}
{
call_rcu(&inode->i_rcu, ll_inode_destroy_callback);
}
-#else
-static void ll_destroy_inode(struct inode *inode)
+
+static int ll_drop_inode(struct inode *inode)
{
- struct ll_inode_info *ptr = ll_i2info(inode);
- OBD_SLAB_FREE_PTR(ptr, ll_inode_cachep);
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
+ int drop;
+
+ if (!sbi->ll_inode_cache_enabled)
+ return 1;
+
+ drop = generic_drop_inode(inode);
+ if (!drop)
+ drop = llcrypt_drop_inode(inode);
+
+ return drop;
}
-#endif
/* exported operations */
-struct super_operations lustre_super_operations =
+const struct super_operations lustre_super_operations =
{
- .alloc_inode = ll_alloc_inode,
- .destroy_inode = ll_destroy_inode,
-#ifdef HAVE_SBOPS_EVICT_INODE
- .evict_inode = ll_delete_inode,
+ .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,
+};
+
+/**
+ * This is the entry point for the mount call into Lustre.
+ * This is called when a client is mounted, and this is
+ * where we start setting things up.
+ *
+ * @lmd2data data Mount options (e.g. -o flock,abort_recov)
+ */
+static int lustre_fill_super(struct super_block *sb, void *lmd2_data,
+ int silent)
+{
+ struct lustre_mount_data *lmd;
+ struct lustre_sb_info *lsi;
+ int rc;
+
+ ENTRY;
+
+ CDEBUG(D_MOUNT|D_VFSTRACE, "VFS Op: sb %p\n", sb);
+
+ lsi = lustre_init_lsi(sb);
+ if (!lsi)
+ RETURN(-ENOMEM);
+ lmd = lsi->lsi_lmd;
+
+ /*
+ * Disable lockdep during mount, because mount locking patterns are
+ * 'special'.
+ */
+ lockdep_off();
+
+ /*
+ * LU-639: the OBD cleanup of last mount may not finish yet, wait here.
+ */
+ obd_zombie_barrier();
+
+ /* Figure out the lmd from the mount options */
+ if (lmd_parse(lmd2_data, lmd)) {
+ lustre_put_lsi(sb);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (!lmd_is_client(lmd)) {
+#ifdef HAVE_SERVER_SUPPORT
+#if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 15, 51, 0)
+ static bool printed;
+
+ if (!printed) {
+ LCONSOLE_WARN("%s: mounting server target with '-t lustre' deprecated, use '-t lustre_tgt'\n",
+ lmd->lmd_profile);
+ printed = true;
+ }
+#endif
+ rc = server_fill_super(sb);
#else
- .clear_inode = ll_clear_inode,
- .delete_inode = ll_delete_inode,
+ rc = -ENODEV;
+ CERROR("%s: This is client-side-only module, cannot handle server mount: rc = %d\n",
+ lmd->lmd_profile, rc);
+ lustre_put_lsi(sb);
#endif
- .put_super = ll_put_super,
- .statfs = ll_statfs,
- .umount_begin = ll_umount_begin,
- .remount_fs = ll_remount_fs,
- .show_options = ll_show_options,
-};
+ GOTO(out, rc);
+ }
+ CDEBUG(D_MOUNT, "Mounting client %s\n", lmd->lmd_profile);
+ /* filename encryption is disabled by default */
+ lsi->lsi_flags &= ~LSI_FILENAME_ENC;
+ rc = lustre_start_mgc(sb);
+ if (rc) {
+ lustre_common_put_super(sb);
+ GOTO(out, rc);
+ }
+ /* Connect and start */
+ rc = ll_fill_super(sb);
+ /* ll_file_super will call lustre_common_put_super on failure,
+ * which takes care of the module reference.
+ *
+ * If error happens in fill_super() call, @lsi will be killed there.
+ * This is why we do not put it here.
+ */
+out:
+ if (rc) {
+ CERROR("llite: Unable to mount %s: rc = %d\n",
+ s2lsi(sb) ? lmd->lmd_dev : "<unknown>", rc);
+ } else {
+ CDEBUG(D_SUPER, "%s: Mount complete\n",
+ lmd->lmd_dev);
+ }
+ lockdep_on();
+ return rc;
+}
-void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg));
+/***************** FS registration ******************/
+static struct dentry *lustre_mount(struct file_system_type *fs_type, int flags,
+ const char *devname, void *data)
+{
+ return mount_nodev(fs_type, flags, data, lustre_fill_super);
+}
+
+static void lustre_kill_super(struct super_block *sb)
+{
+ struct lustre_sb_info *lsi = s2lsi(sb);
+
+ if (lsi && !IS_SERVER(lsi))
+ ll_kill_super(sb);
+
+ kill_anon_super(sb);
+}
+
+/** Register the "lustre" fs type
+ */
+static struct file_system_type lustre_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "lustre",
+ .mount = lustre_mount,
+ .kill_sb = lustre_kill_super,
+ .fs_flags = FS_RENAME_DOES_D_MOVE,
+};
+MODULE_ALIAS_FS("lustre");
static int __init lustre_init(void)
{
- struct proc_dir_entry *entry;
- lnet_process_id_t lnet_id;
- struct timeval tv;
- int i, rc, seed[2];
+ int rc;
+ unsigned long lustre_inode_cache_flags;
- CLASSERT(sizeof(LUSTRE_VOLATILE_HDR) == LUSTRE_VOLATILE_HDR_LEN + 1);
+ BUILD_BUG_ON(sizeof(LUSTRE_VOLATILE_HDR) !=
+ LUSTRE_VOLATILE_HDR_LEN + 1);
/* print an address of _any_ initialized kernel symbol from this
* module, to allow debugging with gdb that doesn't support data
CDEBUG(D_INFO, "Lustre client module (%p).\n",
&lustre_super_operations);
+ lustre_inode_cache_flags = SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT |
+ SLAB_MEM_SPREAD;
+#ifdef SLAB_ACCOUNT
+ lustre_inode_cache_flags |= SLAB_ACCOUNT;
+#endif
+
ll_inode_cachep = kmem_cache_create("lustre_inode_cache",
sizeof(struct ll_inode_info),
- 0, SLAB_HWCACHE_ALIGN, NULL);
+ 0, lustre_inode_cache_flags, NULL);
if (ll_inode_cachep == NULL)
GOTO(out_cache, rc = -ENOMEM);
if (ll_file_data_slab == NULL)
GOTO(out_cache, rc = -ENOMEM);
- entry = lprocfs_register("llite", proc_lustre_root, NULL, NULL);
- if (IS_ERR(entry)) {
- rc = PTR_ERR(entry);
- CERROR("cannot register '/proc/fs/lustre/llite': rc = %d\n",
- rc);
- GOTO(out_cache, rc);
- }
-
- proc_lustre_fs_root = entry;
-
- cfs_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);
- }
+ 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);
- do_gettimeofday(&tv);
- cfs_srand(tv.tv_sec ^ seed[0], tv.tv_usec ^ seed[1]);
+ rc = llite_tunables_register();
+ if (rc)
+ GOTO(out_cache, rc);
rc = vvp_global_init();
if (rc != 0)
- GOTO(out_proc, rc);
+ GOTO(out_tunables, rc);
cl_inode_fini_env = cl_env_alloc(&cl_inode_fini_refcheck,
LCT_REMEMBER | LCT_NOREF);
if (rc != 0)
GOTO(out_inode_fini_env, rc);
- lustre_register_client_fill_super(ll_fill_super);
- lustre_register_kill_super_cb(ll_kill_super);
- lustre_register_client_process_config(ll_process_config);
+ rc = register_filesystem(&lustre_fs_type);
+ if (rc)
+ GOTO(out_xattr, rc);
RETURN(0);
+out_xattr:
+ ll_xattr_fini();
out_inode_fini_env:
cl_env_put(cl_inode_fini_env, &cl_inode_fini_refcheck);
out_vvp:
vvp_global_fini();
-out_proc:
- lprocfs_remove(&proc_lustre_fs_root);
+out_tunables:
+ llite_tunables_unregister();
out_cache:
- if (ll_inode_cachep != NULL)
- kmem_cache_destroy(ll_inode_cachep);
-
- if (ll_file_data_slab != NULL)
- kmem_cache_destroy(ll_file_data_slab);
-
+ kmem_cache_destroy(ll_inode_cachep);
+ kmem_cache_destroy(ll_file_data_slab);
+ kmem_cache_destroy(pcc_inode_slab);
return rc;
}
static void __exit lustre_exit(void)
{
- lustre_register_client_fill_super(NULL);
- lustre_register_kill_super_cb(NULL);
- lustre_register_client_process_config(NULL);
+ unregister_filesystem(&lustre_fs_type);
- lprocfs_remove(&proc_lustre_fs_root);
+ llite_tunables_unregister();
ll_xattr_fini();
cl_env_put(cl_inode_fini_env, &cl_inode_fini_refcheck);
vvp_global_fini();
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
+
kmem_cache_destroy(ll_inode_cachep);
kmem_cache_destroy(ll_file_data_slab);
+ kmem_cache_destroy(pcc_inode_slab);
}
MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff