1 files changed, 30 insertions, 8 deletions

diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 05d7878dfad1..4545f885c41e 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -39,7 +39,7 @@ static struct inode *jffs2_alloc_inode(struct super_block *sb)
 {
 	struct jffs2_inode_info *f;
 
-	f = kmem_cache_alloc(jffs2_inode_cachep, GFP_KERNEL);
+	f = alloc_inode_sb(sb, jffs2_inode_cachep, GFP_KERNEL);
 	if (!f)
 		return NULL;
 	return &f->vfs_inode;
@@ -58,6 +58,7 @@ static void jffs2_i_init_once(void *foo)
 	struct jffs2_inode_info *f = foo;
 
 	mutex_init(&f->sem);
+	f->target = NULL;
 	inode_init_once(&f->vfs_inode);
 }
 
@@ -88,7 +89,7 @@ static int jffs2_show_options(struct seq_file *s, struct dentry *root)
 
 	if (opts->override_compr)
 		seq_printf(s, ",compr=%s", jffs2_compr_name(opts->compr));
-	if (opts->rp_size)
+	if (opts->set_rp_size)
 		seq_printf(s, ",rp_size=%u", opts->rp_size / 1024);
 
 	return 0;
@@ -150,6 +151,7 @@ static struct dentry *jffs2_get_parent(struct dentry *child)
 }
 
 static const struct export_operations jffs2_export_ops = {
+	.encode_fh = generic_encode_ino32_fh,
 	.get_parent = jffs2_get_parent,
 	.fh_to_dentry = jffs2_fh_to_dentry,
 	.fh_to_parent = jffs2_fh_to_parent,
@@ -202,11 +204,8 @@ static int jffs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	case Opt_rp_size:
 		if (result.uint_32 > UINT_MAX / 1024)
 			return invalf(fc, "jffs2: rp_size unrepresentable");
-		opt = result.uint_32 * 1024;
-		if (opt > c->mtd->size)
-			return invalf(fc, "jffs2: Too large reserve pool specified, max is %llu KB",
-				      c->mtd->size / 1024);
-		c->mount_opts.rp_size = opt;
+		c->mount_opts.rp_size = result.uint_32 * 1024;
+		c->mount_opts.set_rp_size = true;
 		break;
 	default:
 		return -EINVAL;
@@ -215,11 +214,30 @@ static int jffs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	return 0;
 }
 
+static inline void jffs2_update_mount_opts(struct fs_context *fc)
+{
+	struct jffs2_sb_info *new_c = fc->s_fs_info;
+	struct jffs2_sb_info *c = JFFS2_SB_INFO(fc->root->d_sb);
+
+	mutex_lock(&c->alloc_sem);
+	if (new_c->mount_opts.override_compr) {
+		c->mount_opts.override_compr = new_c->mount_opts.override_compr;
+		c->mount_opts.compr = new_c->mount_opts.compr;
+	}
+	if (new_c->mount_opts.set_rp_size) {
+		c->mount_opts.set_rp_size = new_c->mount_opts.set_rp_size;
+		c->mount_opts.rp_size = new_c->mount_opts.rp_size;
+	}
+	mutex_unlock(&c->alloc_sem);
+}
+
 static int jffs2_reconfigure(struct fs_context *fc)
 {
 	struct super_block *sb = fc->root->d_sb;
 
 	sync_filesystem(sb);
+	jffs2_update_mount_opts(fc);
+
 	return jffs2_do_remount_fs(sb, fc);
 }
 
@@ -249,6 +267,10 @@ static int jffs2_fill_super(struct super_block *sb, struct fs_context *fc)
 	c->mtd = sb->s_mtd;
 	c->os_priv = sb;
 
+	if (c->mount_opts.rp_size > c->mtd->size)
+		return invalf(fc, "jffs2: Too large reserve pool specified, max is %llu KB",
+			      c->mtd->size / 1024);
+
 	/* Initialize JFFS2 superblock locks, the further initialization will
 	 * be done later */
 	mutex_init(&c->alloc_sem);
@@ -366,7 +388,7 @@ static int __init init_jffs2_fs(void)
 	jffs2_inode_cachep = kmem_cache_create("jffs2_i",
 					     sizeof(struct jffs2_inode_info),
 					     0, (SLAB_RECLAIM_ACCOUNT|
-						SLAB_MEM_SPREAD|SLAB_ACCOUNT),
+						SLAB_ACCOUNT),
 					     jffs2_i_init_once);
 	if (!jffs2_inode_cachep) {
 		pr_err("error: Failed to initialise inode cache\n");