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Subject[PATCH] f2fs crypto: avoid unneeded memory allocation in ->readdir
Date
From: Chao Yu <yuchao0@huawei.com>

When decrypting dirents in ->readdir, fscrypt_fname_disk_to_usr won't
change content of original encrypted dirent, we don't need to allocate
additional buffer for storing mirror of it, so get rid of it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
fs/f2fs/dir.c | 7 -------
1 file changed, 7 deletions(-)

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 3522f6f..fbc8ede 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -796,16 +796,9 @@ bool f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
int save_len = fstr->len;
int ret;

- de_name.name = f2fs_kmalloc(de_name.len, GFP_NOFS);
- if (!de_name.name)
- return false;
-
- memcpy(de_name.name, d->filename[bit_pos], de_name.len);
-
ret = fscrypt_fname_disk_to_usr(d->inode,
(u32)de->hash_code, 0,
&de_name, fstr);
- kfree(de_name.name);
if (ret < 0)
return true;

--
2.7.2
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