linux-kernel - Re: [f2fs-dev] [PATCH v4 3/3] f2fs: Support case-insensitive file name lookups

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Message-ID: <354102fb-e076-78d4-174d-5a193cae70f0@kernel.org>
Date:   Wed, 21 Aug 2019 21:15:08 +0800
From:   Chao Yu <chao@...nel.org>
To:     Daniel Rosenberg <drosen@...gle.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <yuchao0@...wei.com>,
        Jonathan Corbet <corbet@....net>,
        linux-f2fs-devel@...ts.sourceforge.net
Cc:     linux-doc@...r.kernel.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        kernel-team@...roid.com
Subject: Re: [f2fs-dev] [PATCH v4 3/3] f2fs: Support case-insensitive file
 name lookups

On 2019-7-24 7:05, Daniel Rosenberg via Linux-f2fs-devel wrote:
> +static int f2fs_d_compare(const struct dentry *dentry, unsigned int len,
> + const char *str, const struct qstr *name)
> +{
> +	struct qstr qstr = {.name = str, .len = len };
> +
> +	if (!IS_CASEFOLDED(dentry->d_parent->d_inode)) {
> +		if (len != name->len)
> +			return -1;
> +		return memcmp(str, name, len);

66883da1eee8 ("ext4: fix dcache lookup of !casefolded directories")

memcmp(str, name->name, len);