yaffs，linux3.11，内核编译时报错， error: unknown field 'readdir' specified in initializer

要编译linux3.11的内核，但是下载最新的yaffs2，之后编译报错： error: unknown field 'readdir' specified in initializer

看了源码后发现，在linux3.11的源码里的file_operations结构体里面没有readdir，取而代之的是iterate，但是在yaffs里面（fs/yaffs2/yaffs_vfs.c）还是用的是readdir，所以把该文件改写一下。

具体改变如下：

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0)) 
static int yaffs_iterate(struct file *file, struct dir_context *ctx) 
{ 
    struct yaffs_obj *obj; 
    struct yaffs_dev *dev; 
    struct yaffs_search_context *sc; 
    struct inode *inode = file->f_dentry->d_inode; 
    unsigned long offset, curoffs; 
    struct yaffs_obj *l; 
    int ret_val = 0; 
	 
    char name[YAFFS_MAX_NAME_LENGTH + 1]; 
	 
    obj = yaffs_dentry_to_obj(file->f_dentry); 
    dev = obj->my_dev; 
	 
    yaffs_gross_lock(dev); 

    yaffs_dev_to_lc(dev)->readdir_process = current; 
 
    offset = ctx->pos; 
	 
    sc = yaffs_new_search(obj); 
    if (!sc) { 
    ret_val = -ENOMEM; 
    goto out; 
    } 
	 
    yaffs_trace(YAFFS_TRACE_OS,"yaffs_readdir: starting at %d", (int)offset);  
    if (offset == 0) { 
    yaffs_trace(YAFFS_TRACE_OS, "yaffs_readdir: entry . ino %d", (int)inode->i_ino); 
    yaffs_gross_unlock(dev); 
    if (!dir_emit_dot(file, ctx)) { 
    yaffs_gross_lock(dev); 
    goto out; 
    } 
    yaffs_gross_lock(dev); 
    offset++; 
    ctx->pos++; 
    } 
    if (offset == 1) { 
    yaffs_trace(YAFFS_TRACE_OS, "yaffs_readdir: entry .. ino %d", (int)file->f_dentry->d_parent->d_inode->i_ino); 
    yaffs_gross_unlock(dev); 
    if (!dir_emit_dotdot(file, ctx)) { 
    yaffs_gross_lock(dev); 
    goto out; 
    } 
    yaffs_gross_lock(dev); 
    offset++; 
    ctx->pos++; 
    } 

    curoffs = 1; 
	 
 /* If the directory has changed since the open or last call to readdir, rewind to after the 2 canned entries. */ 
    if (file->f_version != inode->i_version) { 
    offset = 2; 
    ctx->pos = offset; 
    file->f_version = inode->i_version; 
    } 
 
    while (sc->next_return) { 
    curoffs++; 
    l = sc->next_return; 
    if (curoffs >= offset) { 
    int this_inode = yaffs_get_obj_inode(l); 
    int this_type = yaffs_get_obj_type(l); 

    yaffs_get_obj_name(l, name, YAFFS_MAX_NAME_LENGTH + 1); 
    yaffs_trace(YAFFS_TRACE_OS, "yaffs_readdir: %s inode %d", name, yaffs_get_obj_inode(l)); 
	 
    yaffs_gross_unlock(dev); 
	 
    if (!dir_emit(ctx, name, strlen(name),this_inode, this_type) < 0) { 
    yaffs_gross_lock(dev); 
    goto out; 
    } 
 
    yaffs_gross_lock(dev); 
 
    offset++; 
    ctx->pos++; 
    } 
    yaffs_search_advance(sc); 
    } 
 
    out: 
    yaffs_search_end(sc); 
    yaffs_dev_to_lc(dev)->readdir_process = NULL; 
    yaffs_gross_unlock(dev); 

    return ret_val; 
    } 
#else 
static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) 
{
.....
}
#endif

static const struct file_operations yaffs_dir_operations = {
	.read = generic_read_dir,
//	.readdir = yaffs_readdir,
//add by jxm begin
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0)) 
        .iterate = yaffs_iterate, 
#else 
        .readdir = yaffs_readdir, 
#endif 
//add by jxm end
	.fsync = yaffs_sync_object,
	.llseek = generic_file_llseek,
};

然后 编译，就不报这个错了

参考网址：https://dev.openwrt.org/browser/trunk/target/linux/generic/patches-3.12/503-yaffs-3.12-convert-readdir-to-iterate.patch?rev=39084#L1911

还会报这个错：fs/yaffs2/yaffs_vfs.c:3501: error: implicit declaration of function 'create_proc_entry'，解决方法可以看我转载的这篇文章

http://blog.csdn.net/xiaominthere/article/details/17549607