1 files changed, 48 insertions, 5 deletions

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index c79eac048456..1f77014c6e1a 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -42,6 +42,7 @@
 #include "xfs_xattr.h"
 #include "xfs_iunlink_item.h"
 #include "xfs_dahash_test.h"
+#include "scrub/stats.h"
 
 #include <linux/magic.h>
 #include <linux/fs_context.h>
@@ -49,6 +50,7 @@
 
 static const struct super_operations xfs_super_operations;
 
+static struct dentry *xfs_debugfs;	/* top-level xfs debugfs dir */
 static struct kset *xfs_kset;		/* top-level xfs sysfs dir */
 #ifdef DEBUG
 static struct xfs_kobj xfs_dbg_kobj;	/* global debug sysfs attrs */
@@ -783,6 +785,7 @@ xfs_mount_free(
 	if (mp->m_ddev_targp)
 		xfs_free_buftarg(mp->m_ddev_targp);
 
+	debugfs_remove(mp->m_debugfs);
 	kfree(mp->m_rtname);
 	kfree(mp->m_logname);
 	kmem_free(mp);
@@ -1163,6 +1166,7 @@ xfs_fs_put_super(
 	xfs_unmountfs(mp);
 
 	xfs_freesb(mp);
+	xchk_mount_stats_free(mp);
 	free_percpu(mp->m_stats.xs_stats);
 	xfs_mount_list_del(mp);
 	xfs_inodegc_free_percpu(mp);
@@ -1497,6 +1501,21 @@ xfs_fs_validate_params(
 	return 0;
 }
 
+struct dentry *
+xfs_debugfs_mkdir(
+	const char	*name,
+	struct dentry	*parent)
+{
+	struct dentry	*child;
+
+	/* Apparently we're expected to ignore error returns?? */
+	child = debugfs_create_dir(name, parent);
+	if (IS_ERR(child))
+		return NULL;
+
+	return child;
+}
+
 static int
 xfs_fs_fill_super(
 	struct super_block	*sb,
@@ -1539,6 +1558,13 @@ xfs_fs_fill_super(
 	if (error)
 		return error;
 
+	if (xfs_debugfs) {
+		mp->m_debugfs = xfs_debugfs_mkdir(mp->m_super->s_id,
+						  xfs_debugfs);
+	} else {
+		mp->m_debugfs = NULL;
+	}
+
 	error = xfs_init_mount_workqueues(mp);
 	if (error)
 		goto out_shutdown_devices;
@@ -1565,10 +1591,14 @@ xfs_fs_fill_super(
 		goto out_destroy_inodegc;
 	}
 
-	error = xfs_readsb(mp, flags);
+	error = xchk_mount_stats_alloc(mp);
 	if (error)
 		goto out_free_stats;
 
+	error = xfs_readsb(mp, flags);
+	if (error)
+		goto out_free_scrub_stats;
+
 	error = xfs_finish_flags(mp);
 	if (error)
 		goto out_free_sb;
@@ -1746,6 +1776,8 @@ xfs_fs_fill_super(
 	xfs_filestream_unmount(mp);
  out_free_sb:
 	xfs_freesb(mp);
+ out_free_scrub_stats:
+	xchk_mount_stats_free(mp);
  out_free_stats:
 	free_percpu(mp->m_stats.xs_stats);
  out_destroy_inodegc:
@@ -2377,10 +2409,12 @@ init_xfs_fs(void)
 	if (error)
 		goto out_cleanup_procfs;
 
+	xfs_debugfs = xfs_debugfs_mkdir("xfs", NULL);
+
 	xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj);
 	if (!xfs_kset) {
 		error = -ENOMEM;
-		goto out_sysctl_unregister;
+		goto out_debugfs_unregister;
 	}
 
 	xfsstats.xs_kobj.kobject.kset = xfs_kset;
@@ -2396,11 +2430,15 @@ init_xfs_fs(void)
 	if (error)
 		goto out_free_stats;
 
+	error = xchk_global_stats_setup(xfs_debugfs);
+	if (error)
+		goto out_remove_stats_kobj;
+
 #ifdef DEBUG
 	xfs_dbg_kobj.kobject.kset = xfs_kset;
 	error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug");
 	if (error)
-		goto out_remove_stats_kobj;
+		goto out_remove_scrub_stats;
 #endif
 
 	error = xfs_qm_init();
@@ -2417,14 +2455,17 @@ init_xfs_fs(void)
  out_remove_dbg_kobj:
 #ifdef DEBUG
 	xfs_sysfs_del(&xfs_dbg_kobj);
- out_remove_stats_kobj:
+ out_remove_scrub_stats:
 #endif
+	xchk_global_stats_teardown();
+ out_remove_stats_kobj:
 	xfs_sysfs_del(&xfsstats.xs_kobj);
  out_free_stats:
 	free_percpu(xfsstats.xs_stats);
  out_kset_unregister:
 	kset_unregister(xfs_kset);
- out_sysctl_unregister:
+ out_debugfs_unregister:
+	debugfs_remove(xfs_debugfs);
 	xfs_sysctl_unregister();
  out_cleanup_procfs:
 	xfs_cleanup_procfs();
@@ -2448,9 +2489,11 @@ exit_xfs_fs(void)
 #ifdef DEBUG
 	xfs_sysfs_del(&xfs_dbg_kobj);
 #endif
+	xchk_global_stats_teardown();
 	xfs_sysfs_del(&xfsstats.xs_kobj);
 	free_percpu(xfsstats.xs_stats);
 	kset_unregister(xfs_kset);
+	debugfs_remove(xfs_debugfs);
 	xfs_sysctl_unregister();
 	xfs_cleanup_procfs();
 	xfs_mru_cache_uninit();