Hi Coly,
On 2018/6/1 11:45, Coly Li wrote:
> On 2018/5/31 7:11 PM, Yisheng Xie wrote:
>> match_string() returns the index of an array for a matching string,
>> which can be used instead of open coded variant.
>>
>> Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx>
>> Cc: linux-bcache@xxxxxxxxxxxxxxx
>> Signed-off-by: Yisheng Xie <xieyisheng1@xxxxxxxxxx>
>
> Hi Yishenng,
>
> Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> submitted a patch to
> replace the whole bch_read_string_list() with __sysfs_match_string().
> And this patch is applied in Jens' block tree, will go into mainline
> kernel in v4.18.
>
> If you search bcache mailing list, you may find a patch named with
> "bcache: Replace bch_read_string_list() by __sysfs_match_string()".
>
> That means this patch will conflict with existing changes.
Get it, and thanks for this information.
Sorry Andy, for doing this once more.
Thanks
Yisheng
>
> Thanks.
>
> Coly Li
>
>> ---
>> drivers/md/bcache/util.c | 9 ++-------
>> 1 file changed, 2 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c
>> index 74febd5..cd1f4fd 100644
>> --- a/drivers/md/bcache/util.c
>> +++ b/drivers/md/bcache/util.c
>> @@ -136,22 +136,17 @@ ssize_t bch_snprint_string_list(char *buf, size_t size, const char * const list[
>>
>> ssize_t bch_read_string_list(const char *buf, const char * const list[])
>> {
>> - size_t i;
>> + ssize_t i;
>> char *s, *d = kstrndup(buf, PAGE_SIZE - 1, GFP_KERNEL);
>> if (!d)
>> return -ENOMEM;
>>
>> s = strim(d);
>>
>> - for (i = 0; list[i]; i++)
>> - if (!strcmp(list[i], s))
>> - break;
>> + i = match_string(list, -1, s);
>>
>> kfree(d);
>>
>> - if (!list[i])
>> - return -EINVAL;
>> -
>> return i;
>> }
>>
>>
>
>
>
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