From mboxrd@z Thu Jan 1 00:00:00 1970 From: WeiWei Wang Date: Wed, 10 Sep 2014 20:38:04 +0800 Subject: [Ocfs2-devel] [PATCH 0/7] ocfs2: allocate blocks in direct I/O write Message-ID: <5410462C.8090707@huawei.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ocfs2-devel@oss.oracle.com hi all, In ocfs2 append I/O write and fill holes I/O write situation, blocks have not been allocated yet, so the direct I/O write will fallback to buffer I/O write. Buffer I/O write the data to page cache first, then flush the page cache to disk, this will consume some performance. In this patch, the direct I/O write doesn't not need to fallback to buffer I/O write any more because the allocate blocks are enabled in direct I/O now. This patch set can be applied against 3.17-rc4 branch of ocfs2 directly. Thanks, -- Wang Weiwei Wang (7) ocfs2: eliminate the static flag of some functions ocfs2: add two functions of add and remove inode in orphan dir ocfs2: add orphan recovery types in ocfs2_recover_orphans ocfs2: add and remove inode to orphan in ocfs2_direct_IO ocfs2: allocate blocks in ocfs2_direct_IO_get_blocks ocfs2: do not fallback to buffer I/O write if appending ocfs2: do not fallback to buffer I/O write if fill holes fs/ocfs2/aops.c | 160 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------ fs/ocfs2/file.c | 104 +++++++++++++++++++++++++++++++---------------------------------------------------- fs/ocfs2/file.h | 9 ++++++++ fs/ocfs2/journal.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------- fs/ocfs2/journal.h | 5 ++++ fs/ocfs2/namei.c | 161 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---- --------- fs/ocfs2/namei.h | 21 ++++++++++++++++- fs/ocfs2/ocfs2.h | 6 +++++ 8 files changed, 451 insertions(+), 105 deletions(-)