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authorChao Yu <yuchao0@huawei.com>2020-11-10 04:24:36 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2020-12-03 09:00:20 +0300
commit3a1b9eaf727b4ab84ebf059e09c38fc6a53e5614 (patch)
tree3ae23231f3cd67ecba7b01ee4a6fc45e72c6258e /fs/f2fs
parente1e8debec6564d0c355aab84c93de8e357f397bd (diff)
downloadlinux-3a1b9eaf727b4ab84ebf059e09c38fc6a53e5614.tar.xz
f2fs: avoid unneeded data copy in f2fs_ioc_move_range()
Fields in struct f2fs_move_range won't change in f2fs_ioc_move_range(), let's avoid copying this structure's data to userspace. Signed-off-by: Chao Yu <yuchao0@huawei.com> Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/file.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index ea2f1ba408c4..861a6697960a 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2898,12 +2898,6 @@ static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
range.pos_out, range.len);
mnt_drop_write_file(filp);
- if (err)
- goto err_out;
-
- if (copy_to_user((struct f2fs_move_range __user *)arg,
- &range, sizeof(range)))
- err = -EFAULT;
err_out:
fdput(dst);
return err;