Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753292Ab0FJFJK (ORCPT ); Thu, 10 Jun 2010 01:09:10 -0400 Received: from rcsinet10.oracle.com ([148.87.113.121]:63638 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751797Ab0FJFJI (ORCPT ); Thu, 10 Jun 2010 01:09:08 -0400 From: Tao Ma To: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Tao Ma , Joel Becker , Christoph Hellwig , Nick Piggin Subject: [PATCH v3] ocfs2: Let ocfs2_setattr use new truncate sequence. Date: Thu, 10 Jun 2010 13:08:05 +0800 Message-Id: <1276146485-9346-1-git-send-email-tao.ma@oracle.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <20100610044234.GD26335@laptop> References: <20100610044234.GD26335@laptop> X-Auth-Type: Internal IP X-Source-IP: acsinet15.oracle.com [141.146.126.227] X-CT-RefId: str=0001.0A090208.4C107368.0147:SCFMA922111,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2946 Lines: 83 Let ocfs2 use the new truncate sequence. The changes include: 1. Use truncate_setsize directly since we don't implement our own ->truncate and what we need is "update i_size and truncate_pagecache" which truncate_setsize now does. 2. For direct write, ocfs2 actually don't allow write to pass i_size(see ocfs2_prepare_inode_for_write), so we don't have a chance to increase i_size. So remove the bogus check. Cc: Joel Becker Cc: Christoph Hellwig Cc: Nick Piggin Signed-off-by: Tao Ma --- fs/ocfs2/file.c | 32 ++++++-------------------------- 1 files changed, 6 insertions(+), 26 deletions(-) diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 1fb0985..8b5447e 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -987,7 +987,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr) if (status) goto bail_unlock; - if (i_size_read(inode) > attr->ia_size) { + if (inode->i_size > attr->ia_size) { if (ocfs2_should_order_data(inode)) { status = ocfs2_begin_ordered_truncate(inode, attr->ia_size); @@ -1052,22 +1052,13 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr) } /* - * This will intentionally not wind up calling truncate_setsize(), - * since all the work for a size change has been done above. - * Otherwise, we could get into problems with truncate as - * ip_alloc_sem is used there to protect against i_size - * changes. - * - * XXX: this means the conditional below can probably be removed. + * Since all the work for a size change has been done above. + * Call truncate_setsize directly to change size and truncate + * pagecache. */ if ((attr->ia_valid & ATTR_SIZE) && - attr->ia_size != i_size_read(inode)) { - status = vmtruncate(inode, attr->ia_size); - if (status) { - mlog_errno(status); - goto bail_commit; - } - } + attr->ia_size != inode->i_size) + truncate_setsize(inode, attr->ia_size); setattr_copy(inode, attr); mark_inode_dirty(inode); @@ -2122,17 +2113,6 @@ relock: written = generic_file_direct_write(iocb, iov, &nr_segs, *ppos, ppos, count, ocount); if (written < 0) { - /* - * direct write may have instantiated a few - * blocks outside i_size. Trim these off again. - * Don't need i_size_read because we hold i_mutex. - * - * XXX(truncate): this looks buggy because ocfs2 did not - * actually implement ->truncate. Take a look at - * the new truncate sequence and update this accordingly - */ - if (*ppos + count > inode->i_size) - truncate_setsize(inode, inode->i_size); ret = written; goto out_dio; } -- 1.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/