From: Eric Biggers <ebiggers@google.com>
Date: Fri, 24 Jan 2020 04:15:48 +0000 (-0800)
Subject: f2fs: fix dcache lookup of !casefolded directories
X-Git-Tag: v5.5.3~235
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8e8eb75946768d4592ed82ca878ac1ecc0792dcb;p=users%2Fdwmw2%2Flinux.git

f2fs: fix dcache lookup of !casefolded directories

commit 5515eae647426169e4b7969271fb207881eba7f6 upstream.

Do the name comparison for non-casefolded directories correctly.

This is analogous to ext4's commit 66883da1eee8 ("ext4: fix dcache
lookup of !casefolded directories").

Fixes: 2c2eb7a300cd ("f2fs: Support case-insensitive file name lookups")
Cc: <stable@vger.kernel.org> # v5.4+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index c967cacf979ef..88922171f2fec 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -1073,7 +1073,7 @@ static int f2fs_d_compare(const struct dentry *dentry, unsigned int len,
 	if (!IS_CASEFOLDED(dentry->d_parent->d_inode)) {
 		if (len != name->len)
 			return -1;
-		return memcmp(str, name, len);
+		return memcmp(str, name->name, len);
 	}
 
 	return f2fs_ci_compare(dentry->d_parent->d_inode, name, &qstr, false);