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NFS: Add a helper to convert a struct nfs_page into an inode

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Replace all the open coded calls to page_file_mapping(req->wb_page)->host.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust
2023-01-19 16:33:38 -05:00
committed by Anna Schumaker
parent 8e0bdc7021
commit 6dd85e83f3
3 changed files with 17 additions and 5 deletions
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13
include/linux/nfs_page.h
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@@ -189,6 +189,19 @@ static inline struct page *nfs_page_to_page(const struct nfs_page *req,
return folio_page(folio, pgbase >> PAGE_SHIFT);
}
/**
* nfs_page_to_inode - Retrieve an inode for the request
* @req: pointer to a struct nfs_page
*/
static inline struct inode *nfs_page_to_inode(const struct nfs_page *req)
{
struct folio *folio = nfs_page_to_folio(req);
if (folio == NULL)
return page_file_mapping(req->wb_page)->host;
return folio_file_mapping(folio)->host;
}
/**
* nfs_page_max_length - Retrieve the maximum possible length for a request
* @req: pointer to a struct nfs_page