fix ceph_write_end() (b9de313c) · Commits · 戴 / test

fs/ceph/addr.c

+8 −6

Original line number	Diff line number	Diff line
		@@ -1276,25 +1276,27 @@ static int ceph_write_end(struct file file, struct address_space mapping,
		struct page page, void fsdata)
		{
		struct inode *inode = file_inode(file);
		unsigned from = pos & (PAGE_SIZE - 1);
		int check_cap = 0;

		dout("write_end file %p inode %p page %p %d~%d (%d)\n", file,
		inode, page, (int)pos, (int)copied, (int)len);

		/* zero the stale part of the page if we did a short copy */
		if (copied < len)
		zero_user_segment(page, from+copied, len);
		if (!PageUptodate(page)) {
		if (copied < len) {
		copied = 0;
		goto out;
		}
		SetPageUptodate(page);
		}

		/* did file size increase? */
		if (pos+copied > i_size_read(inode))
		check_cap = ceph_inode_set_size(inode, pos+copied);

		if (!PageUptodate(page))
		SetPageUptodate(page);

		set_page_dirty(page);

		out:
		unlock_page(page);
		put_page(page);