From patchwork Wed Mar 20 11:05:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Yi X-Patchwork-Id: 13597779 Received: from dggsgout11.his.huawei.com (unknown [45.249.212.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 376933BB30; Wed, 20 Mar 2024 11:13:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710933196; cv=none; b=itH6cwn15685Lo9Pp4hhZjJP6JzCQ9IQJJCvS+tf2t/j0fyJl8xb/a46G+mKa8qw9riWrXpbDvCuNMfSFDxGysGEI4grSPhDB6NrdmBSjzthY3bI5ObCcM1EflopJcoEXMJS5FqJ7oQ9TQ5Y0ChL0RTP+BBLr77Whx2Jjs6Rvq8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710933196; c=relaxed/simple; bh=NHvYJNJA9NH0qzElWSIkbNpItSyG0MKFkbToKbEPgFg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=GxLHFCB2OP+CLRMXpzpg6FwNft/bzqr+C5VQQgHnBSrlcLKQwYfVwoWubi5333cqj/wxs/rkEGRzA69cNL5Syt/6GAr2zOkPl/ch2az536Jxcct2OR2sjn6PykxwqbrUcVrkPEM80+61juvDwz5Bv2xbNoXWESwVZj7x/WfONGc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4V05YG6tcWz4f3lXJ; Wed, 20 Mar 2024 19:13:06 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id CFDC81A0AD6; Wed, 20 Mar 2024 19:13:10 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgBXKBG5xPplGX0fHg--.18516S9; Wed, 20 Mar 2024 19:13:10 +0800 (CST) From: Zhang Yi To: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, djwong@kernel.org, hch@infradead.org, brauner@kernel.org, david@fromorbit.com, tytso@mit.edu, jack@suse.cz, yi.zhang@huawei.com, yi.zhang@huaweicloud.com, chengzhihao1@huawei.com, yukuai3@huawei.com Subject: [PATCH v4 5/9] iomap: drop the write failure handles when unsharing and zeroing Date: Wed, 20 Mar 2024 19:05:44 +0800 Message-Id: <20240320110548.2200662-6-yi.zhang@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240320110548.2200662-1-yi.zhang@huaweicloud.com> References: <20240320110548.2200662-1-yi.zhang@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: cCh0CgBXKBG5xPplGX0fHg--.18516S9 X-Coremail-Antispam: 1UD129KBjvJXoWxJr43GryfJw13AF1DKw1DGFg_yoW8Cw43pr 9xKaykCFWxJF47uF1kJF98uFyYyFZ7KrW7CrWUGw43ZF4qyr4agF18KayYvF1DJ3s7ArWS qF4vyryrX3WUAr7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPF14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E 14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIx kGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxVAF wI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJV W8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfUoxhL UUUUU X-CM-SenderInfo: d1lo6xhdqjqx5xdzvxpfor3voofrz/ From: Zhang Yi Unsharing and zeroing can only happen within EOF, so there is never a need to perform posteof pagecache truncation if write begin fails, also partial write could never theoretically happened from iomap_write_end(), so remove both of them. Signed-off-by: Zhang Yi Reviewed-by: Christoph Hellwig Reviewed-by: Darrick J. Wong --- fs/iomap/buffered-io.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 093c4515b22a..7e32a204650b 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -786,7 +786,6 @@ static int iomap_write_begin(struct iomap_iter *iter, loff_t pos, out_unlock: __iomap_put_folio(iter, pos, 0, folio); - iomap_write_failed(iter->inode, pos, len); return status; } @@ -863,8 +862,6 @@ static size_t iomap_write_end(struct iomap_iter *iter, loff_t pos, size_t len, if (old_size < pos) pagecache_isize_extended(iter->inode, old_size, pos); - if (ret < len) - iomap_write_failed(iter->inode, pos + ret, len - ret); return ret; } @@ -912,8 +909,10 @@ static loff_t iomap_write_iter(struct iomap_iter *iter, struct iov_iter *i) } status = iomap_write_begin(iter, pos, bytes, &folio); - if (unlikely(status)) + if (unlikely(status)) { + iomap_write_failed(iter->inode, pos, bytes); break; + } if (iter->iomap.flags & IOMAP_F_STALE) break; @@ -927,6 +926,9 @@ static loff_t iomap_write_iter(struct iomap_iter *iter, struct iov_iter *i) copied = copy_folio_from_iter_atomic(folio, offset, bytes, i); status = iomap_write_end(iter, pos, bytes, copied, folio); + if (status < bytes) + iomap_write_failed(iter->inode, pos + status, + bytes - status); if (unlikely(copied != status)) iov_iter_revert(i, copied - status);