1 files changed, 50 insertions, 17 deletions

diff --git a/fs/afs/super.c b/fs/afs/super.c
index 7030d76155fc..2e8496ba1205 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -21,22 +21,21 @@
 #include <linux/fs.h>
 #include <linux/pagemap.h>
 #include <linux/parser.h>
+#include <linux/statfs.h>
+#include <linux/sched.h>
 #include "internal.h"
 
 #define AFS_FS_MAGIC 0x6B414653 /* 'kAFS' */
 
 static void afs_i_init_once(void *foo, struct kmem_cache *cachep,
 			    unsigned long flags);
-
 static int afs_get_sb(struct file_system_type *fs_type,
 		      int flags, const char *dev_name,
 		      void *data, struct vfsmount *mnt);
-
 static struct inode *afs_alloc_inode(struct super_block *sb);
-
 static void afs_put_super(struct super_block *sb);
-
 static void afs_destroy_inode(struct inode *inode);
+static int afs_statfs(struct dentry *dentry, struct kstatfs *buf);
 
 struct file_system_type afs_fs_type = {
 	.owner		= THIS_MODULE,
@@ -47,9 +46,9 @@ struct file_system_type afs_fs_type = {
 };
 
 static const struct super_operations afs_super_ops = {
-	.statfs		= simple_statfs,
+	.statfs		= afs_statfs,
 	.alloc_inode	= afs_alloc_inode,
-	.drop_inode	= generic_delete_inode,
+	.write_inode	= afs_write_inode,
 	.destroy_inode	= afs_destroy_inode,
 	.clear_inode	= afs_clear_inode,
 	.umount_begin	= afs_umount_begin,
@@ -66,7 +65,7 @@ enum {
 	afs_opt_vol,
 };
 
-static const match_table_t afs_options_list = {
+static match_table_t afs_options_list = {
 	{ afs_opt_cell,		"cell=%s"	},
 	{ afs_opt_rwpath,	"rwpath"	},
 	{ afs_opt_vol,		"vol=%s"	},
@@ -453,15 +452,15 @@ static void afs_i_init_once(void *_vnode, struct kmem_cache *cachep,
 {
 	struct afs_vnode *vnode = _vnode;
 
-	if (flags & SLAB_CTOR_CONSTRUCTOR) {
-		memset(vnode, 0, sizeof(*vnode));
-		inode_init_once(&vnode->vfs_inode);
-		init_waitqueue_head(&vnode->update_waitq);
-		mutex_init(&vnode->permits_lock);
-		mutex_init(&vnode->validate_lock);
-		spin_lock_init(&vnode->lock);
-		INIT_WORK(&vnode->cb_broken_work, afs_broken_callback_work);
-	}
+	memset(vnode, 0, sizeof(*vnode));
+	inode_init_once(&vnode->vfs_inode);
+	init_waitqueue_head(&vnode->update_waitq);
+	mutex_init(&vnode->permits_lock);
+	mutex_init(&vnode->validate_lock);
+	spin_lock_init(&vnode->writeback_lock);
+	spin_lock_init(&vnode->lock);
+	INIT_LIST_HEAD(&vnode->writebacks);
+	INIT_WORK(&vnode->cb_broken_work, afs_broken_callback_work);
 }
 
 /*
@@ -485,6 +484,7 @@ static struct inode *afs_alloc_inode(struct super_block *sb)
 	vnode->flags		= 1 << AFS_VNODE_UNSET;
 	vnode->cb_promised	= false;
 
+	_leave(" = %p", &vnode->vfs_inode);
 	return &vnode->vfs_inode;
 }
 
@@ -495,7 +495,7 @@ static void afs_destroy_inode(struct inode *inode)
 {
 	struct afs_vnode *vnode = AFS_FS_I(inode);
 
-	_enter("{%lu}", inode->i_ino);
+	_enter("%p{%x:%u}", inode, vnode->fid.vid, vnode->fid.vnode);
 
 	_debug("DESTROY INODE %p", inode);
 
@@ -504,3 +504,36 @@ static void afs_destroy_inode(struct inode *inode)
 	kmem_cache_free(afs_inode_cachep, vnode);
 	atomic_dec(&afs_count_active_inodes);
 }
+
+/*
+ * return information about an AFS volume
+ */
+static int afs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+	struct afs_volume_status vs;
+	struct afs_vnode *vnode = AFS_FS_I(dentry->d_inode);
+	struct key *key;
+	int ret;
+
+	key = afs_request_key(vnode->volume->cell);
+	if (IS_ERR(key))
+		return PTR_ERR(key);
+
+	ret = afs_vnode_get_volume_status(vnode, key, &vs);
+	key_put(key);
+	if (ret < 0) {
+		_leave(" = %d", ret);
+		return ret;
+	}
+
+	buf->f_type	= dentry->d_sb->s_magic;
+	buf->f_bsize	= AFS_BLOCK_SIZE;
+	buf->f_namelen	= AFSNAMEMAX - 1;
+
+	if (vs.max_quota == 0)
+		buf->f_blocks = vs.part_max_blocks;
+	else
+		buf->f_blocks = vs.max_quota;
+	buf->f_bavail = buf->f_bfree = buf->f_blocks - vs.blocks_in_use;
+	return 0;
+}