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LU-3319 procfs: move llite proc handling over to seq_file
[fs/lustre-release.git] / lustre / llite / super25.c
index 5f27094..b373ad2 100644 (file)
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -28,6 +26,8 @@
 /*
  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
 #include <lprocfs_status.h>
 #include "llite_internal.h"
 
-static cfs_mem_cache_t *ll_inode_cachep;
+static struct kmem_cache *ll_inode_cachep;
 
 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, CFS_ALLOC_IO);
-        if (lli == NULL)
-                return NULL;
-
-        inode_init_once(&lli->lli_vfs_inode);
-        ll_lli_init(lli);
+       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_IO);
+       if (lli == NULL)
+               return NULL;
+
+       inode_init_once(&lli->lli_vfs_inode);
+       return &lli->lli_vfs_inode;
+}
 
-        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);
+       OBD_SLAB_FREE_PTR(ptr, ll_inode_cachep);
 }
 
 static void ll_destroy_inode(struct inode *inode)
 {
-        struct ll_inode_info *ptr = ll_i2info(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)
+{
+       struct ll_inode_info *ptr = ll_i2info(inode);
+       OBD_SLAB_FREE_PTR(ptr, ll_inode_cachep);
+}
+#endif
 
 int ll_init_inodecache(void)
 {
-        ll_inode_cachep = cfs_mem_cache_create("lustre_inode_cache",
-                                               sizeof(struct ll_inode_info),
-                                               0, CFS_SLAB_HWCACHE_ALIGN);
-        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, NULL);
+       if (ll_inode_cachep == NULL)
+               return -ENOMEM;
+       return 0;
 }
 
 void ll_destroy_inodecache(void)
 {
-        int rc;
-
-        rc = cfs_mem_cache_destroy(ll_inode_cachep);
-        LASSERTF(rc == 0, "ll_inode_cache: not all structures were freed\n");
+       kmem_cache_destroy(ll_inode_cachep);
 }
 
 /* exported operations */
@@ -92,8 +101,12 @@ 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,
+#else
         .clear_inode   = ll_clear_inode,
         .delete_inode  = ll_delete_inode,
+#endif
         .put_super     = ll_put_super,
         .statfs        = ll_statfs,
         .umount_begin  = ll_umount_begin,
@@ -109,54 +122,55 @@ void vvp_global_fini(void);
 
 static int __init init_lustre_lite(void)
 {
-        int i, rc, seed[2];
-        struct timeval tv;
-        lnet_process_id_t lnet_id;
-
-#ifndef CRAY_XT3
-        /* 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_CONSOLE, "Lustre client module (%p).\n",
-               &lustre_super_operations);
-#endif
+       int i, rc, seed[2];
+       struct timeval tv;
+       lnet_process_id_t lnet_id;
 
-        rc = ll_init_inodecache();
-        if (rc)
-                return -ENOMEM;
-        ll_file_data_slab = cfs_mem_cache_create("ll_file_data",
-                                                 sizeof(struct ll_file_data), 0,
-                                                 CFS_SLAB_HWCACHE_ALIGN);
-        if (ll_file_data_slab == NULL) {
-                ll_destroy_inodecache();
-                return -ENOMEM;
-        }
+       CLASSERT(sizeof(LUSTRE_VOLATILE_HDR) == LUSTRE_VOLATILE_HDR_LEN + 1);
 
-        ll_remote_perm_cachep = cfs_mem_cache_create("ll_remote_perm_cache",
-                                                  sizeof(struct ll_remote_perm),
-                                                      0, 0);
-        if (ll_remote_perm_cachep == NULL) {
-                cfs_mem_cache_destroy(ll_file_data_slab);
-                ll_file_data_slab = NULL;
-                ll_destroy_inodecache();
-                return -ENOMEM;
-        }
+       /* 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);
 
-        ll_rmtperm_hash_cachep = cfs_mem_cache_create("ll_rmtperm_hash_cache",
-                                                   REMOTE_PERM_HASHSIZE *
-                                                   sizeof(cfs_list_t),
-                                                   0, 0);
-        if (ll_rmtperm_hash_cachep == NULL) {
-                cfs_mem_cache_destroy(ll_remote_perm_cachep);
-                ll_remote_perm_cachep = NULL;
-                cfs_mem_cache_destroy(ll_file_data_slab);
-                ll_file_data_slab = NULL;
-                ll_destroy_inodecache();
+        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);
+       if (ll_file_data_slab == NULL) {
+               ll_destroy_inodecache();
+               return -ENOMEM;
+       }
+
+       ll_remote_perm_cachep = kmem_cache_create("ll_remote_perm_cache",
+                                                 sizeof(struct ll_remote_perm),
+                                                 0, 0, NULL);
+       if (ll_remote_perm_cachep == NULL) {
+               kmem_cache_destroy(ll_file_data_slab);
+               ll_file_data_slab = NULL;
+               ll_destroy_inodecache();
+               return -ENOMEM;
+       }
+
+       ll_rmtperm_hash_cachep = kmem_cache_create("ll_rmtperm_hash_cache",
+                                                  REMOTE_PERM_HASHSIZE *
+                                                  sizeof(cfs_list_t),
+                                                  0, 0, NULL);
+       if (ll_rmtperm_hash_cachep == NULL) {
+               kmem_cache_destroy(ll_remote_perm_cachep);
+               ll_remote_perm_cachep = NULL;
+               kmem_cache_destroy(ll_file_data_slab);
+               ll_file_data_slab = NULL;
+               ll_destroy_inodecache();
+               return -ENOMEM;
+       }
 
         proc_lustre_fs_root = proc_lustre_root ?
-                              lprocfs_register("llite", proc_lustre_root, NULL, NULL) : NULL;
+                             lprocfs_seq_register("llite", proc_lustre_root,
+                                                  NULL, NULL) : NULL;
 
         lustre_register_client_fill_super(ll_fill_super);
         lustre_register_kill_super_cb(ll_kill_super);
@@ -176,8 +190,8 @@ static int __init init_lustre_lite(void)
                 }
         }
 
-        cfs_gettimeofday(&tv);
-        cfs_srand(tv.tv_sec ^ seed[0], tv.tv_usec ^ seed[1]);
+       do_gettimeofday(&tv);
+       cfs_srand(tv.tv_sec ^ seed[0], tv.tv_usec ^ seed[1]);
 
         init_timer(&ll_capa_timer);
         ll_capa_timer.function = ll_capa_timer_callback;
@@ -188,13 +202,15 @@ static int __init init_lustre_lite(void)
         if (rc == 0)
                 rc = vvp_global_init();
 
+       if (rc == 0)
+               rc = ll_xattr_init();
+
         return rc;
 }
 
 static void __exit exit_lustre_lite(void)
 {
-        int rc;
-
+       ll_xattr_fini();
         vvp_global_fini();
         del_timer(&ll_capa_timer);
         ll_capa_thread_stop();
@@ -209,18 +225,15 @@ static void __exit exit_lustre_lite(void)
 
         ll_destroy_inodecache();
 
-        rc = cfs_mem_cache_destroy(ll_rmtperm_hash_cachep);
-        LASSERTF(rc == 0, "couldn't destroy ll_rmtperm_hash_cachep\n");
-        ll_rmtperm_hash_cachep = NULL;
+       kmem_cache_destroy(ll_rmtperm_hash_cachep);
+       ll_rmtperm_hash_cachep = NULL;
 
-        rc = cfs_mem_cache_destroy(ll_remote_perm_cachep);
-        LASSERTF(rc == 0, "couldn't destroy ll_remote_perm_cachep\n");
-        ll_remote_perm_cachep = NULL;
+       kmem_cache_destroy(ll_remote_perm_cachep);
+       ll_remote_perm_cachep = NULL;
 
-        rc = cfs_mem_cache_destroy(ll_file_data_slab);
-        LASSERTF(rc == 0, "couldn't destroy ll_file_data slab\n");
-        if (proc_lustre_fs_root)
-                lprocfs_remove(&proc_lustre_fs_root);
+       kmem_cache_destroy(ll_file_data_slab);
+       if (proc_lustre_fs_root)
+               lprocfs_remove(&proc_lustre_fs_root);
 }
 
 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");