[PATCH 5.5 134/367] f2fs: fix dcache lookup of !casefolded directories

Greg Kroah-Hartman
2020-02-10T12:51:02Z

From: Eric Biggers <ebiggers@google.com>

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>

---
fs/f2fs/dir.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -1073,7 +1073,7 @@ static int f2fs_d_compare(const struct d
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);