Messages in this thread Patch in this message | | | From | Jaegeuk Kim <> | Subject | [PATCH] f2fs: avoid unneeded data copy in f2fs_ioc_move_range() | Date | Mon, 9 Nov 2020 08:58:57 -0800 |
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From: Chao Yu <yuchao0@huawei.com>
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> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> --- fs/f2fs/file.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 52417a2e3f4f..22ae8ae0072f 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; -- 2.29.2.222.g5d2a92d10f8-goog
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