From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jaegeuk Kim Subject: [PATCH 17/19] f2fs: revmove spin_lock for write_orphan_inodes Date: Fri, 1 May 2015 17:48:44 -0700 Message-ID: <1430527726-68547-17-git-send-email-jaegeuk@kernel.org> References: <1430527726-68547-1-git-send-email-jaegeuk@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Return-path: In-Reply-To: <1430527726-68547-1-git-send-email-jaegeuk@kernel.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net List-Id: linux-fsdevel.vger.kernel.org This patch removes spin_lock, since this is covered by f2fs_lock_op already. And, we should avoid to use page operations inside spin_lock. Signed-off-by: Jaegeuk Kim --- fs/f2fs/checkpoint.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 6dbff2b..d076e7e 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -514,7 +514,12 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) grab_meta_page(sbi, start_blk + index); index = 1; - spin_lock(&im->ino_lock); + + /* + * we don't need to do spin_lock(&im->ino_lock) here, since all the + * orphan inode operations are covered under f2fs_lock_op(). + * And, spin_lock should be avoided due to page operations below. + */ head = &im->ino_list; /* loop for each orphan inode entry and write them in Jornal block */ @@ -554,8 +559,6 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) set_page_dirty(page); f2fs_put_page(page, 1); } - - spin_unlock(&im->ino_lock); } static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, -- 2.1.1 ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y