From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp1040.oracle.com ([141.146.126.69]:43283 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754242AbbBLEpw (ORCPT ); Wed, 11 Feb 2015 23:45:52 -0500 Date: Thu, 12 Feb 2015 12:45:39 +0800 From: Liu Bo To: Josef Bacik Cc: linux-btrfs@vger.kernel.org Subject: Re: [PATCH 2/3] Btrfs: don't set and clear delalloc for O_DIRECT writes Message-ID: <20150212044539.GC2416@localhost.localdomain> Reply-To: bo.li.liu@oracle.com References: <1423685339-8278-1-git-send-email-jbacik@fb.com> <1423685339-8278-2-git-send-email-jbacik@fb.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1423685339-8278-2-git-send-email-jbacik@fb.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Wed, Feb 11, 2015 at 03:08:58PM -0500, Josef Bacik wrote: > We do this to get the space accounting, but this is just needless churn on the > io_tree, so just drop setting/clearing delalloc and just drop the reserved data > space when we have a successfull allocation. Thanks, > Looks good. Reviewed-by: Liu Bo > Signed-off-by: Josef Bacik > --- > fs/btrfs/inode.c | 8 ++------ > 1 file changed, 2 insertions(+), 6 deletions(-) > > diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c > index e78a2fd..fb16fd3 100644 > --- a/fs/btrfs/inode.c > +++ b/fs/btrfs/inode.c > @@ -7142,7 +7142,7 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock, > int ret = 0; > > if (create) > - unlock_bits |= EXTENT_DELALLOC | EXTENT_DIRTY; > + unlock_bits |= EXTENT_DIRTY; > else > len = min_t(u64, len, root->sectorsize); > > @@ -7278,11 +7278,7 @@ unlock: > BTRFS_I(inode)->outstanding_extents++; > spin_unlock(&BTRFS_I(inode)->lock); > } > - > - ret = set_extent_bit(&BTRFS_I(inode)->io_tree, lockstart, > - lockstart + len - 1, EXTENT_DELALLOC, NULL, > - &cached_state, GFP_NOFS); > - BUG_ON(ret); > + btrfs_free_reserved_data_space(inode, len); > } > > /* > -- > 1.8.3.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html