From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: [PATCH] mm: D-cache flushing was forgotten From: Dmitriy Monakhov Date: Fri, 06 Oct 2006 13:44:50 +0400 Message-ID: <87psd5lqwd.fsf@sw.ru> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" Sender: owner-linux-mm@kvack.org Return-Path: To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, viro@zeniv.linux.org.uk, David Miller , Dmitriy Monakhov List-ID: --=-=-= Here is a patch that add D-cache flushing routine after page was changed. It is forgotten in current code. David Miller agree with patch. Signed-off-by: Dmitriy Monakhov --=-=-= Content-Disposition: inline; filename=diff-buffer-flush-dcache-page diff --git a/fs/buffer.c b/fs/buffer.c index 71649ef..b2652aa 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2008,6 +2008,7 @@ static int __block_prepare_write(struct clear_buffer_new(bh); kaddr = kmap_atomic(page, KM_USER0); memset(kaddr+block_start, 0, bh->b_size); + flush_dcache_page(page); kunmap_atomic(kaddr, KM_USER0); set_buffer_uptodate(bh); mark_buffer_dirty(bh); @@ -2514,6 +2515,7 @@ failed: */ kaddr = kmap_atomic(page, KM_USER0); memset(kaddr, 0, PAGE_CACHE_SIZE); + flush_dcache_page(page); kunmap_atomic(kaddr, KM_USER0); SetPageUptodate(page); set_page_dirty(page); --=-=-=-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org