f2fs crypto: avoid unneeded memory allocation when {en/de}crypting symlink

This patch adopts f2fs with codes of ext4, it removes unneeded memory
allocation in creating/accessing path of symlink.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 0d2b1ba9660e..f9c294eee0f1 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2226,6 +2226,7 @@ int _f2fs_get_encryption_info(struct inode *inode);
 /* crypto_fname.c */
 bool f2fs_valid_filenames_enc_mode(uint32_t);
 u32 f2fs_fname_crypto_round_up(u32, u32);
+unsigned f2fs_fname_encrypted_size(struct inode *, u32);
 int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
 int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
                         const struct f2fs_str *, struct f2fs_str *);