diff mbox series

[block/for-next,v2,07/16] bcachefs: use new helper to get inode from block_device

Message ID 20231127062116.2355129-8-yukuai1@huaweicloud.com
State New
Headers show
Series block: remove field 'bd_inode' from block_device | expand

Commit Message

Yu Kuai Nov. 27, 2023, 6:21 a.m. UTC 
From: Yu Kuai <yukuai3@huawei.com>

Which is more efficiency, and also prepare to remove the field
'bd_inode' from block_device.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
 fs/bcachefs/util.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Kent Overstreet Nov. 27, 2023, 6:49 a.m. UTC | #1 
On Mon, Nov 27, 2023 at 02:21:07PM +0800, Yu Kuai wrote:
> From: Yu Kuai <yukuai3@huawei.com>
> 
> Which is more efficiency, and also prepare to remove the field
> 'bd_inode' from block_device.
> 
> Signed-off-by: Yu Kuai <yukuai3@huawei.com>

Acked-by: Kent Overstreet <kent.overstreet@linux.dev>

> ---
>  fs/bcachefs/util.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h
> index 2984b57b2958..fe7ccb3a3517 100644
> --- a/fs/bcachefs/util.h
> +++ b/fs/bcachefs/util.h
> @@ -518,7 +518,7 @@ int bch2_bio_alloc_pages(struct bio *, size_t, gfp_t);
>  
>  static inline sector_t bdev_sectors(struct block_device *bdev)
>  {
> -	return bdev->bd_inode->i_size >> 9;
> +	return bdev_inode(bdev)->i_size >> 9;
>  }
>  
>  #define closure_bio_submit(bio, cl)					\
> -- 
> 2.39.2
>
Damien Le Moal Nov. 27, 2023, 7:09 a.m. UTC | #2 
On 11/27/23 15:21, Yu Kuai wrote:
> From: Yu Kuai <yukuai3@huawei.com>
> 
> Which is more efficiency, and also prepare to remove the field
> 'bd_inode' from block_device.
> 
> Signed-off-by: Yu Kuai <yukuai3@huawei.com>
> ---
>  fs/bcachefs/util.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h
> index 2984b57b2958..fe7ccb3a3517 100644
> --- a/fs/bcachefs/util.h
> +++ b/fs/bcachefs/util.h
> @@ -518,7 +518,7 @@ int bch2_bio_alloc_pages(struct bio *, size_t, gfp_t);
>  
>  static inline sector_t bdev_sectors(struct block_device *bdev)
>  {
> -	return bdev->bd_inode->i_size >> 9;
> +	return bdev_inode(bdev)->i_size >> 9;

shouldn't this use i_size_read() ?

I missed the history with this but why not use bdev_nr_sectors() and delete this
helper ?

>  }
>  
>  #define closure_bio_submit(bio, cl)					\
Kent Overstreet Nov. 27, 2023, 7:24 a.m. UTC | #3 
On Mon, Nov 27, 2023 at 04:09:47PM +0900, Damien Le Moal wrote:
> On 11/27/23 15:21, Yu Kuai wrote:
> > From: Yu Kuai <yukuai3@huawei.com>
> > 
> > Which is more efficiency, and also prepare to remove the field
> > 'bd_inode' from block_device.
> > 
> > Signed-off-by: Yu Kuai <yukuai3@huawei.com>
> > ---
> >  fs/bcachefs/util.h | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h
> > index 2984b57b2958..fe7ccb3a3517 100644
> > --- a/fs/bcachefs/util.h
> > +++ b/fs/bcachefs/util.h
> > @@ -518,7 +518,7 @@ int bch2_bio_alloc_pages(struct bio *, size_t, gfp_t);
> >  
> >  static inline sector_t bdev_sectors(struct block_device *bdev)
> >  {
> > -	return bdev->bd_inode->i_size >> 9;
> > +	return bdev_inode(bdev)->i_size >> 9;
> 
> shouldn't this use i_size_read() ?
> 
> I missed the history with this but why not use bdev_nr_sectors() and delete this
> helper ?

Actually, this helper seems to be dead code.
Yu Kuai Nov. 27, 2023, 7:52 a.m. UTC | #4 
Hi,

在 2023/11/27 15:24, Kent Overstreet 写道:
> On Mon, Nov 27, 2023 at 04:09:47PM +0900, Damien Le Moal wrote:
>> On 11/27/23 15:21, Yu Kuai wrote:
>>> From: Yu Kuai <yukuai3@huawei.com>
>>>
>>> Which is more efficiency, and also prepare to remove the field
>>> 'bd_inode' from block_device.
>>>
>>> Signed-off-by: Yu Kuai <yukuai3@huawei.com>
>>> ---
>>>   fs/bcachefs/util.h | 2 +-
>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h
>>> index 2984b57b2958..fe7ccb3a3517 100644
>>> --- a/fs/bcachefs/util.h
>>> +++ b/fs/bcachefs/util.h
>>> @@ -518,7 +518,7 @@ int bch2_bio_alloc_pages(struct bio *, size_t, gfp_t);
>>>   
>>>   static inline sector_t bdev_sectors(struct block_device *bdev)
>>>   {
>>> -	return bdev->bd_inode->i_size >> 9;
>>> +	return bdev_inode(bdev)->i_size >> 9;
>>
>> shouldn't this use i_size_read() ?
>>
>> I missed the history with this but why not use bdev_nr_sectors() and delete this
>> helper ?
> 
> Actually, this helper seems to be dead code.

Yes, there is no caller of this helper, I'll remove this helper.

Thanks,
Kuai

> .
>
diff mbox series

Patch

diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h
index 2984b57b2958..fe7ccb3a3517 100644
--- a/fs/bcachefs/util.h
+++ b/fs/bcachefs/util.h
@@ -518,7 +518,7 @@  int bch2_bio_alloc_pages(struct bio *, size_t, gfp_t);
 
 static inline sector_t bdev_sectors(struct block_device *bdev)
 {
-	return bdev->bd_inode->i_size >> 9;
+	return bdev_inode(bdev)->i_size >> 9;
 }
 
 #define closure_bio_submit(bio, cl)					\