linux-ext4 - Re: [PATCH 07/11] iomap: fix the iomap

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Date:   Sat, 2 May 2020 05:04:01 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     Christoph Hellwig <hch@....de>, linux-ext4@...r.kernel.org,
        viro@...iv.linux.org.uk
Cc:     jack@...e.cz, tytso@....edu, adilger@...ger.ca, amir73il@...il.com,
        linux-fsdevel@...r.kernel.org, linux-unionfs@...r.kernel.org
Subject: Re: [PATCH 07/11] iomap: fix the iomap_fiemap prototype



On 4/27/20 11:49 PM, Christoph Hellwig wrote:
> iomap_fiemap should take u64 start and len arguments, just like the
> ->fiemap prototype.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>

hmm.. I guess,
it's only ->fiemap ops in inode_operations which has
start and len arguments as u64.

While such other ops in struct file_operations have the
arguments of type loff_t. (e.g. ->fallocate, -->llseek etc).

But sure to match the ->fiemap prototype, this patch looks ok to me.

Feel free to add:
Reviewed-by: Ritesh Harjani <riteshh@...ux.ibm.com>

> ---
>   fs/iomap/fiemap.c     | 2 +-
>   include/linux/iomap.h | 2 +-
>   2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/iomap/fiemap.c b/fs/iomap/fiemap.c
> index fca3dfb9d964a..dd04e4added15 100644
> --- a/fs/iomap/fiemap.c
> +++ b/fs/iomap/fiemap.c
> @@ -66,7 +66,7 @@ iomap_fiemap_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
>   }
>   
>   int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fi,
> -		loff_t start, loff_t len, const struct iomap_ops *ops)
> +		u64 start, u64 len, const struct iomap_ops *ops)
>   {
>   	struct fiemap_ctx ctx;
>   	loff_t ret;
> diff --git a/include/linux/iomap.h b/include/linux/iomap.h
> index 8b09463dae0db..63db02528b702 100644
> --- a/include/linux/iomap.h
> +++ b/include/linux/iomap.h
> @@ -178,7 +178,7 @@ int iomap_truncate_page(struct inode *inode, loff_t pos, bool *did_zero,
>   vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf,
>   			const struct iomap_ops *ops);
>   int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
> -		loff_t start, loff_t len, const struct iomap_ops *ops);
> +		u64 start, u64 len, const struct iomap_ops *ops);
>   loff_t iomap_seek_hole(struct inode *inode, loff_t offset,
>   		const struct iomap_ops *ops);
>   loff_t iomap_seek_data(struct inode *inode, loff_t offset,
>