From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753661AbaCBOJ7 (ORCPT ); Sun, 2 Mar 2014 09:09:59 -0500 Received: from mail-pa0-f50.google.com ([209.85.220.50]:53206 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753641AbaCBOJ5 (ORCPT ); Sun, 2 Mar 2014 09:09:57 -0500 From: Namjae Jeon To: hirofumi@mail.parknet.co.jp, akpm@linux-foundation.org Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Namjae Jeon , Namjae Jeon , Amit Sahrawat Subject: [PATCH v4 6/6] Documentation/filesystems/vfat.txt: update the limitation for fat fallocate Date: Sun, 2 Mar 2014 23:09:44 +0900 Message-Id: <1393769384-3643-1-git-send-email-linkinjeon@gmail.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Namjae Jeon Update the limitation for fat fallocate. Signed-off-by: Namjae Jeon Signed-off-by: Amit Sahrawat --- Documentation/filesystems/vfat.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt index 4a93e98..5cf57b3 100644 --- a/Documentation/filesystems/vfat.txt +++ b/Documentation/filesystems/vfat.txt @@ -175,6 +175,16 @@ nfs=stale_rw|nostale_ro : 0,1,yes,no,true,false +LIMITATION +--------------------------------------------------------------------- +* The fallocated region of file is discarded at umount/evict time + when using fallocate with FALLOC_FL_KEEP_SIZE. + So, User should assume that fallocated region can be discarded at + last close if there is memory pressure resulting in eviction of + the inode from the memory. As a result, for any dependency on + the fallocated region, user should make sure to recheck fallocate + after reopening the file. + TODO ---------------------------------------------------------------------- * Need to get rid of the raw scanning stuff. Instead, always use -- 1.7.11-rc0