cifs: Remove {cifs,nfs}_fscache_release_page()

Remove {cifs,nfs}_fscache_release_page() from fs/cifs/fscache.h.  This
functionality got built directly into cifs_release_folio() and will
hopefully be replaced with netfs_release_folio() at some point.

The "nfs_" version is a copy and paste error and should've been altered to
read "cifs_".  That can also be removed.

Reported-by: Matthew Wilcox <[email protected]>
Signed-off-by: David Howells <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
cc: Steve French <[email protected]>
cc: [email protected]
cc: [email protected]
cc: [email protected]
Signed-off-by: Steve French <[email protected]>

Author: dhowells

fs/cifs/fscache.h

@@ -108,17 +108,6 @@ static inline void cifs_readpage_to_fscache(struct inode *inode,
 		__cifs_readpage_to_fscache(inode, page);
 }
 
-static inline int cifs_fscache_release_page(struct page *page, gfp_t gfp)
-{
-	if (PageFsCache(page)) {
-		if (current_is_kswapd() || !(gfp & __GFP_FS))
-			return false;
-		wait_on_page_fscache(page);
-		fscache_note_page_release(cifs_inode_cookie(page->mapping->host));
-	}
-	return true;
-}
-
 #else /* CONFIG_CIFS_FSCACHE */
 static inline
 void cifs_fscache_fill_coherency(struct inode *inode,
@@ -154,11 +143,6 @@ cifs_readpage_from_fscache(struct inode *inode, struct page *page)
 static inline
 void cifs_readpage_to_fscache(struct inode *inode, struct page *page) {}
 
-static inline int nfs_fscache_release_page(struct page *page, gfp_t gfp)
-{
-	return true; /* May release page */
-}
-
 #endif /* CONFIG_CIFS_FSCACHE */
 
 #endif /* _CIFS_FSCACHE_H */