linux-kernel - Re: [PATCH] f2fs: fix to return -EOPNOTSUPP for uncached write

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Message-ID: <4688e9e4-fc41-4d0d-9948-e729c812c346@web.de>
Date: Sun, 3 Aug 2025 13:33:18 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Chao Yu <chao@...nel.org>, linux-f2fs-devel@...ts.sourceforge.net,
 Jaegeuk Kim <jaegeuk@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Jens Axboe <axboe@...nel.dk>,
 Qi Han <hanqi@...o.com>
Subject: Re: [PATCH] f2fs: fix to return -EOPNOTSUPP for uncached write

…
> +++ b/fs/f2fs/file.c
> @@ -5185,6 +5185,11 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
>  		goto out;
>  	}
>  
> +	if (iocb->ki_flags & IOCB_DONTCACHE) {
> +		ret = -EOPNOTSUPP;
> +		goto out;
> +	}
> +
>  	if (!f2fs_is_compress_backend_ready(inode)) {
>  		ret = -EOPNOTSUPP;
>  		goto out;

Can it be avoided to specify duplicate exception handling?
May the condition checks be merged for these if statements?

Regards,
Markus