[PATCH 03/15] mm: Delete page_mkwrite_check_truncate()

From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: Xiubo Li <xiubli@redhat.com>, Ilya Dryomov <idryomov@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
	Jeff Layton <jlayton@kernel.org>,
	ceph-devel@vger.kernel.org, David Howells <dhowells@redhat.com>,
	linux-fsdevel@vger.kernel.org
Subject: [PATCH 03/15] mm: Delete page_mkwrite_check_truncate()
Date: Fri, 25 Aug 2023 21:12:13 +0100	[thread overview]
Message-ID: <20230825201225.348148-4-willy@infradead.org> (raw)
In-Reply-To: <20230825201225.348148-1-willy@infradead.org>

All users of this function have been converted to
folio_mkwrite_check_truncate().  Remove it.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 include/linux/pagemap.h | 28 ----------------------------
 1 file changed, 28 deletions(-)

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 351c3b7f93a1..f43a0e05b092 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -1491,34 +1491,6 @@ static inline ssize_t folio_mkwrite_check_truncate(struct folio *folio,
 	return offset;
 }
 
-/**
- * page_mkwrite_check_truncate - check if page was truncated
- * @page: the page to check
- * @inode: the inode to check the page against
- *
- * Returns the number of bytes in the page up to EOF,
- * or -EFAULT if the page was truncated.
- */
-static inline int page_mkwrite_check_truncate(struct page *page,
-					      struct inode *inode)
-{
-	loff_t size = i_size_read(inode);
-	pgoff_t index = size >> PAGE_SHIFT;
-	int offset = offset_in_page(size);
-
-	if (page->mapping != inode->i_mapping)
-		return -EFAULT;
-
-	/* page is wholly inside EOF */
-	if (page->index < index)
-		return PAGE_SIZE;
-	/* page is wholly past EOF */
-	if (page->index > index || !offset)
-		return -EFAULT;
-	/* page is partially inside EOF */
-	return offset;
-}
-
 /**
  * i_blocks_per_folio - How many blocks fit in this folio.
  * @inode: The inode which contains the blocks.
-- 
2.40.1

