From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:37450 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726344AbeG3Jkc (ORCPT ); Mon, 30 Jul 2018 05:40:32 -0400 Subject: Re: [PATCH 09/16] btrfs: IS_ERR(p) && PTR_ERR(p) == n is a weird way to spell p == ERR_PTR(n) To: Al Viro , linux-fsdevel@vger.kernel.org Cc: Linus Torvalds , linux-kernel@vger.kernel.org, Miklos Szeredi , Chris Mason , David Sterba , linux-btrfs References: <20180729220317.GB30522@ZenIV.linux.org.uk> <20180729220453.13431-1-viro@ZenIV.linux.org.uk> <20180729220453.13431-9-viro@ZenIV.linux.org.uk> From: Nikolay Borisov Message-ID: Date: Mon, 30 Jul 2018 11:06:42 +0300 MIME-Version: 1.0 In-Reply-To: <20180729220453.13431-9-viro@ZenIV.linux.org.uk> Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: [ADDED David Sterba and Linux-btrfs mailing list] On 30.07.2018 01:04, Al Viro wrote: > From: Al Viro > > Cc: Chris Mason > Signed-off-by: Al Viro Reviewed-by: Nikolay Borisov David, yout might want to pull this immediately, it's a nice cleanup. > --- > fs/btrfs/transaction.c | 2 +- > fs/btrfs/tree-log.c | 5 ++--- > 2 files changed, 3 insertions(+), 4 deletions(-) > > diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c > index ff5f6c719976..feb0348dbcbf 100644 > --- a/fs/btrfs/transaction.c > +++ b/fs/btrfs/transaction.c > @@ -680,7 +680,7 @@ btrfs_attach_transaction_barrier(struct btrfs_root *root) > > trans = start_transaction(root, 0, TRANS_ATTACH, > BTRFS_RESERVE_NO_FLUSH, true); > - if (IS_ERR(trans) && PTR_ERR(trans) == -ENOENT) > + if (trans == ERR_PTR(-ENOENT)) > btrfs_wait_for_commit(root->fs_info, 0); > > return trans; > diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c > index fcfbe1d8584a..2c13e8155ff1 100644 > --- a/fs/btrfs/tree-log.c > +++ b/fs/btrfs/tree-log.c > @@ -2116,7 +2116,7 @@ static noinline int check_item_in_log(struct btrfs_trans_handle *trans, > dir_key->offset, > name, name_len, 0); > } > - if (!log_di || (IS_ERR(log_di) && PTR_ERR(log_di) == -ENOENT)) { > + if (!log_di || log_di == ERR_PTR(-ENOENT)) { > btrfs_dir_item_key_to_cpu(eb, di, &location); > btrfs_release_path(path); > btrfs_release_path(log_path); > @@ -5090,8 +5090,7 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans, > * we don't need to do more work nor fallback to > * a transaction commit. > */ > - if (IS_ERR(other_inode) && > - PTR_ERR(other_inode) == -ENOENT) { > + if (other_inode == ERR_PTR(-ENOENT)) { > goto next_key; > } else if (IS_ERR(other_inode)) { > err = PTR_ERR(other_inode); >