linux-kernel - Re: [PATCH] bcache: Remove usage of the deprecated ida_simple

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Date: Sun, 14 Apr 2024 10:24:40 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Coly Li <colyli@...e.de>
Cc: Kent Overstreet <kent.overstreet@...ux.dev>,
 linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
 linux-bcache@...r.kernel.org
Subject: Re: [PATCH] bcache: Remove usage of the deprecated ida_simple_xx()
 API

Le 14/01/2024 à 16:16, Coly Li a écrit :
> On Sun, Jan 14, 2024 at 01:30:16PM +0100, Christophe JAILLET wrote:
>> ida_alloc() and ida_free() should be preferred to the deprecated
>> ida_simple_get() and ida_simple_remove().
>>
>> Note that the upper limit of ida_simple_get() is exclusive, but the one of
>> ida_alloc_max() is inclusive. So a -1 has been added when needed.
>>
>> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> 
> It looks good to me. Add this patch into my testing directory.
> 
> Thanks.
> 
> Coly Li

Hi,

polite reminder ;-)

CJ

> 
> 
>> ---
>>   drivers/md/bcache/super.c | 10 +++++-----
>>   1 file changed, 5 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
>> index dc3f50f69714..a2eecd1db126 100644
>> --- a/drivers/md/bcache/super.c
>> +++ b/drivers/md/bcache/super.c
>> @@ -881,8 +881,8 @@ static void bcache_device_free(struct bcache_device *d)
>>   		bcache_device_detach(d);
>>   
>>   	if (disk) {
>> -		ida_simple_remove(&bcache_device_idx,
>> -				  first_minor_to_idx(disk->first_minor));
>> +		ida_free(&bcache_device_idx,
>> +			 first_minor_to_idx(disk->first_minor));
>>   		put_disk(disk);
>>   	}
>>   
>> @@ -926,8 +926,8 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size,
>>   	if (!d->full_dirty_stripes)
>>   		goto out_free_stripe_sectors_dirty;
>>   
>> -	idx = ida_simple_get(&bcache_device_idx, 0,
>> -				BCACHE_DEVICE_IDX_MAX, GFP_KERNEL);
>> +	idx = ida_alloc_max(&bcache_device_idx, BCACHE_DEVICE_IDX_MAX - 1,
>> +			    GFP_KERNEL);
>>   	if (idx < 0)
>>   		goto out_free_full_dirty_stripes;
>>   
>> @@ -980,7 +980,7 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size,
>>   out_bioset_exit:
>>   	bioset_exit(&d->bio_split);
>>   out_ida_remove:
>> -	ida_simple_remove(&bcache_device_idx, idx);
>> +	ida_free(&bcache_device_idx, idx);
>>   out_free_full_dirty_stripes:
>>   	kvfree(d->full_dirty_stripes);
>>   out_free_stripe_sectors_dirty:
>> -- 
>> 2.43.0
>>
>