Laurent Riffard wrote:
> Reiser4 can't be built as a module when EXPORT_UNUSED_SYMBOL is not set.
>
> It's broken because reiser4_write_extent is calling
> simple_prepare_write() and commit
> 4e02ed4b4a2fae34aae766a5bb93ae235f60adb8 scheduled it for unexporting.
>
> Signed-off-by: Laurent Riffard <laurent.riffard@xxxxxxx>
>
Acked-by: Edward Shishkin <edward.shishkin@xxxxxxxxx>
> ---
> fs/reiser4/plugin/item/extent_file_ops.c | 5 +++--
> 1 files changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/fs/reiser4/plugin/item/extent_file_ops.c b/fs/reiser4/plugin/item/extent_file_ops.c
> index ef3744e..1eb1ab7 100644
> --- a/fs/reiser4/plugin/item/extent_file_ops.c
> +++ b/fs/reiser4/plugin/item/extent_file_ops.c
> @@ -1059,8 +1059,9 @@ ssize_t reiser4_write_extent(struct file *file, struct inode * inode,
>
> lock_page(page);
> if (!PageUptodate(page) && to_page != PAGE_CACHE_SIZE)
> - simple_prepare_write(file, page, page_off,
> - page_off + to_page);
> + zero_user_segments(page, 0, page_off,
> + page_off + to_page,
> + PAGE_CACHE_SIZE);
>
> written = filemap_copy_from_user(page, page_off, buf, to_page);
> if (unlikely(written != to_page)) {
>
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