Re: [PATCH -next 2/5] block: add ioctl to read the disk sequence number

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On 2021/03/16 5:14, Matthew Wilcox wrote:
> On Mon, Mar 15, 2021 at 09:02:39PM +0100, Matteo Croce wrote:
>> +++ b/include/uapi/linux/fs.h
>> @@ -184,6 +184,7 @@ struct fsxattr {
>>  #define BLKSECDISCARD _IO(0x12,125)
>>  #define BLKROTATIONAL _IO(0x12,126)
>>  #define BLKZEROOUT _IO(0x12,127)
>> +#define BLKGETDISKSEQ _IOR(0x12,128,__u64)
>>  /*
>>   * A jump here: 130-131 are reserved for zoned block devices
>>   * (see uapi/linux/blkzoned.h)
> 
> Not your bug, but this is now 130-136.
> 
> +cc all the people who signed off on the commits that added those ioctl
> numbers without updating this comment.  Perhaps one of them will figure
> out how to stop this happening in future.
> 

Indeed. Will be more careful :)
And send a patch to fix this.

Thanks !

-- 
Damien Le Moal
Western Digital Research




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