linux-kernel - Re: [PATCH] f2fs: compress: fix to wait page writeback in f2fs_write_raw

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Date:   Mon, 20 Mar 2023 06:43:24 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Yangtao Li <frank.li@...o.com>
Cc:     jaegeuk@...nel.org, chao@...nel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, hanqi@...o.com,
        liyangtao <11127627@...tel.com>
Subject: Re: [PATCH] f2fs: compress: fix to wait page writeback in
 f2fs_write_raw_pages()

On Thu, Mar 16, 2023 at 05:36:32PM +0800, Yangtao Li wrote:
> +		if (PageWriteback(cc->rpages[i])) {
> +			if (wbc->sync_mode != WB_SYNC_NONE)
> +				f2fs_wait_on_page_writeback(cc->rpages[i],
> +						DATA, true, true);
> +			else
> +				goto continue_unlock;

Please avoid the else by doing the goto in the branch:

		if (PageWriteback(cc->rpages[i])) {
			if (wbc->sync_mode == WB_SYNC_NONE)
				goto continue_unlock;
			f2fs_wait_on_page_writeback(cc->rpages[i], DATA, true,
						    true);