LU-7156 mdd: add changelog_size to procfs

[fs/lustre-release.git] / lustre / mdd / mdd_lproc.c

diff --git a/lustre/mdd/mdd_lproc.c b/lustre/mdd/mdd_lproc.c
index ca52771..1990ae1 100644 (file)
--- a/lustre/mdd/mdd_lproc.c
+++ b/lustre/mdd/mdd_lproc.c
@@ -27,7 +27,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2012, 2014, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -50,7 +50,7 @@
 #include "mdd_internal.h"
 
 static ssize_t
-mdd_atime_diff_seq_write(struct file *file, const char *buffer,
+mdd_atime_diff_seq_write(struct file *file, const char __user *buffer,
                         size_t count, loff_t *off)
 {
        struct seq_file *m = file->private_data;
@@ -78,7 +78,8 @@ static int mdd_atime_diff_seq_show(struct seq_file *m, void *data)
 {
        struct mdd_device *mdd = m->private;
 
-       return seq_printf(m, "%lu\n", mdd->mdd_atime_diff);
+       seq_printf(m, "%lu\n", mdd->mdd_atime_diff);
+       return 0;
 }
 LPROC_SEQ_FOPS(mdd_atime_diff);
 
@@ -97,7 +98,7 @@ static int mdd_changelog_mask_seq_show(struct seq_file *m, void *data)
 }
 
 static ssize_t
-mdd_changelog_mask_seq_write(struct file *file, const char *buffer,
+mdd_changelog_mask_seq_write(struct file *file, const char __user *buffer,
                             size_t count, loff_t *off)
 {
        struct seq_file *m = file->private_data;
@@ -177,16 +178,68 @@ static int mdd_changelog_users_seq_show(struct seq_file *m, void *data)
 }
 LPROC_SEQ_FOPS_RO(mdd_changelog_users);
 
+static int mdd_changelog_size_ctxt(const struct lu_env *env,
+                                  struct mdd_device *mdd,
+                                  int index, __u64 *val)
+{
+       struct llog_ctxt        *ctxt;
+
+       ctxt = llog_get_context(mdd2obd_dev(mdd),
+                               index);
+       if (ctxt == NULL)
+               return -ENXIO;
+
+       if (!(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) {
+               CERROR("%s: ChangeLog has wrong flags: rc = %d\n",
+                      ctxt->loc_obd->obd_name, -EINVAL);
+               llog_ctxt_put(ctxt);
+               return -EINVAL;
+       }
+
+       *val += llog_cat_size(env, ctxt->loc_handle);
+
+       llog_ctxt_put(ctxt);
+
+       return 0;
+}
+
+static int mdd_changelog_size_seq_show(struct seq_file *m, void *data)
+{
+       struct lu_env            env;
+       struct mdd_device       *mdd = m->private;
+       __u64                    tmp = 0;
+       int                      rc;
+
+       rc = lu_env_init(&env, LCT_LOCAL);
+       if (rc)
+               return rc;
+
+       rc = mdd_changelog_size_ctxt(&env, mdd, LLOG_CHANGELOG_ORIG_CTXT, &tmp);
+       if (rc) {
+               lu_env_fini(&env);
+               return rc;
+       }
+
+       rc = mdd_changelog_size_ctxt(&env, mdd, LLOG_CHANGELOG_USER_ORIG_CTXT,
+                                    &tmp);
+
+       seq_printf(m, LPU64"\n", tmp);
+       lu_env_fini(&env);
+       return rc;
+}
+LPROC_SEQ_FOPS_RO(mdd_changelog_size);
+
 static int mdd_sync_perm_seq_show(struct seq_file *m, void *data)
 {
        struct mdd_device *mdd = m->private;
 
        LASSERT(mdd != NULL);
-       return seq_printf(m, "%d\n", mdd->mdd_sync_permission);
+       seq_printf(m, "%d\n", mdd->mdd_sync_permission);
+       return 0;
 }
 
 static ssize_t
-mdd_sync_perm_seq_write(struct file *file, const char *buffer,
+mdd_sync_perm_seq_write(struct file *file, const char __user *buffer,
                        size_t count, loff_t *off)
 {
        struct seq_file *m = file->private_data;
@@ -212,7 +265,7 @@ static int mdd_lfsck_speed_limit_seq_show(struct seq_file *m, void *data)
 }
 
 static ssize_t
-mdd_lfsck_speed_limit_seq_write(struct file *file, const char *buffer,
+mdd_lfsck_speed_limit_seq_write(struct file *file, const char __user *buffer,
                                size_t count, loff_t *off)
 {
        struct seq_file *m = file->private_data;
@@ -239,7 +292,7 @@ static int mdd_lfsck_async_windows_seq_show(struct seq_file *m, void *data)
 }
 
 static ssize_t
-mdd_lfsck_async_windows_seq_write(struct file *file, const char *buffer,
+mdd_lfsck_async_windows_seq_write(struct file *file, const char __user *buffer,
                                  size_t count, loff_t *off)
 {
        struct seq_file   *m = file->private_data;
@@ -276,13 +329,15 @@ static int mdd_lfsck_layout_seq_show(struct seq_file *m, void *data)
 }
 LPROC_SEQ_FOPS_RO(mdd_lfsck_layout);
 
-static struct lprocfs_seq_vars lprocfs_mdd_obd_vars[] = {
+static struct lprocfs_vars lprocfs_mdd_obd_vars[] = {
        { .name =       "atime_diff",
          .fops =       &mdd_atime_diff_fops            },
        { .name =       "changelog_mask",
          .fops =       &mdd_changelog_mask_fops        },
        { .name =       "changelog_users",
          .fops =       &mdd_changelog_users_fops       },
+       { .name =       "changelog_size",
+         .fops =       &mdd_changelog_size_fops        },
        { .name =       "sync_permission",
          .fops =       &mdd_sync_perm_fops             },
        { .name =       "lfsck_speed_limit",
@@ -293,12 +348,12 @@ static struct lprocfs_seq_vars lprocfs_mdd_obd_vars[] = {
          .fops =       &mdd_lfsck_namespace_fops       },
        { .name =       "lfsck_layout",
          .fops =       &mdd_lfsck_layout_fops          },
-       { 0 }
+       { NULL }
 };
 
 int mdd_procfs_init(struct mdd_device *mdd, const char *name)
 {
-       struct obd_device *obd = class_name2obd(name);
+       struct obd_device *obd = mdd2obd_dev(mdd);
        struct obd_type   *type;
        int                rc;
        ENTRY;
@@ -313,8 +368,8 @@ int mdd_procfs_init(struct mdd_device *mdd, const char *name)
 
        /* Find the type procroot and add the proc entry for this device */
        obd->obd_vars = lprocfs_mdd_obd_vars;
-       mdd->mdd_proc_entry = lprocfs_seq_register(name, type->typ_procroot,
-                                                  obd->obd_vars, mdd);
+       mdd->mdd_proc_entry = lprocfs_register(name, type->typ_procroot,
+                                              obd->obd_vars, mdd);
        if (IS_ERR(mdd->mdd_proc_entry)) {
                rc = PTR_ERR(mdd->mdd_proc_entry);
                CERROR("Error %d setting up lprocfs for %s\n",