diff mbox series

[15/16] f2fs: ensure only power of 2 zone sizes are allowed

Message ID 20220427160255.300418-16-p.raghav@samsung.com (mailing list archive)
State New, archived
Headers show
Series support non power of 2 zoned devices | expand

Commit Message

Pankaj Raghav April 27, 2022, 4:02 p.m. UTC
From: Luis Chamberlain <mcgrof@kernel.org>

F2FS zoned support has power of 2 zone size assumption in many places
such as in __f2fs_issue_discard_zone, init_blkz_info. As the power of 2
requirement has been removed from the block layer, explicitly add a
condition in f2fs to allow only power of 2 zone size devices.

This condition will be relaxed once those calculation based on power of
2 is made generic.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
---
 fs/f2fs/super.c | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Jaegeuk Kim May 3, 2022, 8:05 p.m. UTC | #1
Applied to f2fs tree. Thanks,

On 04/27, Pankaj Raghav wrote:
> From: Luis Chamberlain <mcgrof@kernel.org>
> 
> F2FS zoned support has power of 2 zone size assumption in many places
> such as in __f2fs_issue_discard_zone, init_blkz_info. As the power of 2
> requirement has been removed from the block layer, explicitly add a
> condition in f2fs to allow only power of 2 zone size devices.
> 
> This condition will be relaxed once those calculation based on power of
> 2 is made generic.
> 
> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
> Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
> ---
>  fs/f2fs/super.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index f64761a15df7..db79abf30002 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -3685,6 +3685,10 @@ static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
>  		return 0;
>  
>  	zone_sectors = bdev_zone_sectors(bdev);
> +	if (!is_power_of_2(zone_sectors)) {
> +		f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n");
> +		return -EINVAL;
> +	}
>  
>  	if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
>  				SECTOR_TO_BLOCK(zone_sectors))
> -- 
> 2.25.1
Pankaj Raghav May 4, 2022, 8:53 a.m. UTC | #2
On 2022-05-03 22:05, Jaegeuk Kim wrote:
> Applied to f2fs tree. Thanks,
>
Thanks Jaegeuk. I will remove the f2fs patches from my next revision

Regards,
Pankaj
> On 04/27, Pankaj Raghav wrote:
>> From: Luis Chamberlain <mcgrof@kernel.org>
>>
>> F2FS zoned support has power of 2 zone size assumption in many places
>> such as in __f2fs_issue_discard_zone, init_blkz_info. As the power of 2
>> requirement has been removed from the block layer, explicitly add a
>> condition in f2fs to allow only power of 2 zone size devices.
>>
>> This condition will be relaxed once those calculation based on power of
>> 2 is made generic.
>>
>> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
>> Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
>> ---
>>  fs/f2fs/super.c | 4 ++++
>>  1 file changed, 4 insertions(+)
>>
>> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
>> index f64761a15df7..db79abf30002 100644
>> --- a/fs/f2fs/super.c
>> +++ b/fs/f2fs/super.c
>> @@ -3685,6 +3685,10 @@ static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
>>  		return 0;
>>  
>>  	zone_sectors = bdev_zone_sectors(bdev);
>> +	if (!is_power_of_2(zone_sectors)) {
>> +		f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n");
>> +		return -EINVAL;
>> +	}
>>  
>>  	if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
>>  				SECTOR_TO_BLOCK(zone_sectors))
>> -- 
>> 2.25.1
diff mbox series

Patch

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index f64761a15df7..db79abf30002 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -3685,6 +3685,10 @@  static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
 		return 0;
 
 	zone_sectors = bdev_zone_sectors(bdev);
+	if (!is_power_of_2(zone_sectors)) {
+		f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n");
+		return -EINVAL;
+	}
 
 	if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
 				SECTOR_TO_BLOCK(zone_sectors))