linux-kernel - Re: [PATCH] gfs2: better code for translating characters

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Date:	Sun, 12 Aug 2007 21:27:39 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	rae l <crquan@...il.com>
CC:	Steven Whitehouse <swhiteho@...hat.com>, cluster-devel@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] gfs2: better code for translating characters

rae l wrote:
> On 8/13/07, Denis Cheng <crquan@...il.com> wrote:
>> the original code could work, but I think this code could work better.
>>
>> Signed-off-by: Denis Cheng <crquan@...il.com>
>> ---
>>  fs/gfs2/ops_fstype.c |    3 ++-
>>  1 files changed, 2 insertions(+), 1 deletions(-)
>>
>> diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
>> index cf5aa50..b9a7759 100644
>> --- a/fs/gfs2/ops_fstype.c
>> +++ b/fs/gfs2/ops_fstype.c
>> @@ -145,7 +145,8 @@ static int init_names(struct gfs2_sbd *sdp, int silent)
>>         snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto);
>>         snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table);
>>
>> -       while ((table = strchr(sdp->sd_table_name, '/')))
>> +       table = sdp->sd_table_name;
>> +       while ((table = strchr(table, '/')))
>>                 *table = '_';
> Sorry, I don't know what the while loop really means, what's the
> common case that slash character exists? if the '/' appears multiple,
> the latter code would be better; however, if slash appears rarely, the
> original would still be better.
> 

Only if the compiler is stupid.

	-hpa
-
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