Re: [PATCH 1/4] ext4: fold two if statements into one

["Ted Ts'o" <tytso@xxxxxxx>]

On Wed, Oct 26, 2011 at 03:11:49PM +0800, Yongqiang Yang wrote:
> Signed-off-by: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx>
> ---
>  fs/ext4/extents.c |   23 +++++++++++------------
>  1 files changed, 11 insertions(+), 12 deletions(-)

Unfortunately this patch is incorrect since it changes when the else
clause would get executed:

       if (a) {
       	   if (b) {
	       ...
	   }
       } else {
           ...
       }

is not the same as:

       if (a && b) {
	   ...
       } else {
           ...
       }

Regards,

					- Ted
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