Commit 5d2b42ed authored Aug 25, 2016 by Shuoran Liu Committed by Jaegeuk Kim Aug 29, 2016

f2fs: fix a bug when using namehash to locate dentry bucket



In the following scenario,

1) we don't have the key and doing a lookup for encrypted file,
2) and the encrypted filename is big name

we should use fname->hash as name hash value instead of what is
calculated by fname->disk_name. Because in such case,
fname->disk_name is empty.

Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent dfd02e4d

fs/f2fs/dir.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -172,6 +172,9 @@ static struct f2fs_dir_entry find_in_level(struct inode dir,
		int max_slots;
		f2fs_hash_t namehash;

		if(fname->hash)
		namehash = cpu_to_le32(fname->hash);
		else
		namehash = f2fs_dentry_hash(&name);

		nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level);