From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9139B4F218 for ; Thu, 8 Feb 2024 21:27:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707427663; cv=none; b=o3AEIz7EJdvvUZ4s56iQInkhGHCamXxGfizVhOMFwFxIlVuF3sxqrBxGKX04/XObGREfqPMw+Joi1Kp69nm2g/diW0DJY7RmFJHJ/mnbUeB9hh6mvftpL31Fy6tAJJ3nxXaJJgxTSphpW0yliFyK6K+vCOtTzepuAQkGGeDxKf4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707427663; c=relaxed/simple; bh=d8/A1mDf0mNyfWp2seP5x8ZnFTK1beGGSQzVYd5R3Kk=; h=Date:To:From:Subject:Message-Id; b=lFnISbYk/3OQ0J/iDXJoM0FWO8I5tsUL2wOhrsZSW9Dp9ZjLw9eNuOL+s2zv3Pj8fcMoiP7upoDKR7Mct09Biw8LVvzfi1OeoXtvpshn8/vhJyR5TemM7FHAPqF09JcGZGjHSdnxD6R2IL7M6EJ/LZ5ynfQuFXeo5vooE5lNJQA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=I03EyFyJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="I03EyFyJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E3A0C43390; Thu, 8 Feb 2024 21:27:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1707427663; bh=d8/A1mDf0mNyfWp2seP5x8ZnFTK1beGGSQzVYd5R3Kk=; h=Date:To:From:Subject:From; b=I03EyFyJpocGPCyJcjlNT8yskg5gvUD69MTMaGp2DCxgcqOZJVNhSKML7aB0M8iyj nYyt1CsiPw16vF0nHi4c4LqWE1hb2Kw3+7OQDwDW1y+oc9mj+7AOWLTytGxs8jMZg/ epM0BHv2uVpwfiolKNi4z84tGFLxGW3cEHkL79Rk= Date: Thu, 08 Feb 2024 13:27:42 -0800 To: mm-commits@vger.kernel.org,willy@infradead.org,vishal.l.verma@intel.com,torvalds@linux-foundation.org,snitzer@kernel.org,mpatocka@redhat.com,linux@armlinux.org.uk,david@fromorbit.com,dave.jiang@intel.com,dan.j.williams@intel.com,arnd@arndb.de,agk@redhat.com,mathieu.desnoyers@efficios.com,akpm@linux-foundation.org From: Andrew Morton Subject: + dm-cleanup-alloc_dax-error-handling.patch added to mm-unstable branch Message-Id: <20240208212743.0E3A0C43390@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: dm: cleanup alloc_dax() error handling has been added to the -mm mm-unstable branch. Its filename is dm-cleanup-alloc_dax-error-handling.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/dm-cleanup-alloc_dax-error-handling.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Mathieu Desnoyers Subject: dm: cleanup alloc_dax() error handling Date: Thu, 8 Feb 2024 13:49:11 -0500 Now that alloc_dax() returns ERR_PTR(-EOPNOTSUPP) rather than NULL, the callers do not have to handle NULL return values anymore. Link: https://lkml.kernel.org/r/20240208184913.484340-11-mathieu.desnoyers@efficios.com Signed-off-by: Mathieu Desnoyers Cc: Alasdair Kergon Cc: Mike Snitzer Cc: Mikulas Patocka Cc: Linus Torvalds Cc: Dan Williams Cc: Vishal Verma Cc: Dave Jiang Cc: Matthew Wilcox Cc: Arnd Bergmann Cc: Russell King Cc: Dave Chinner Signed-off-by: Andrew Morton --- drivers/md/dm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/md/dm.c~dm-cleanup-alloc_dax-error-handling +++ a/drivers/md/dm.c @@ -2124,8 +2124,8 @@ static struct mapped_device *alloc_dev(i sprintf(md->disk->disk_name, "dm-%d", minor); dax_dev = alloc_dax(md, &dm_dax_ops); - if (IS_ERR_OR_NULL(dax_dev)) { - if (IS_ERR(dax_dev) && PTR_ERR(dax_dev) != -EOPNOTSUPP) + if (IS_ERR(dax_dev)) { + if (PTR_ERR(dax_dev) != -EOPNOTSUPP) goto bad; } else { set_dax_nocache(dax_dev); _ Patches currently in -mm which might be from mathieu.desnoyers@efficios.com are nvdimm-pmem-fix-leak-on-dax_add_host-failure.patch nvdimm-pmem-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch dm-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch dcssblk-handle-alloc_dax-eopnotsupp-failure.patch virtio-treat-alloc_dax-eopnotsupp-failure-as-non-fatal.patch dax-check-for-data-cache-aliasing-at-runtime.patch introduce-cpu_dcache_is_aliasing-across-all-architectures.patch dax-fix-incorrect-list-of-data-cache-aliasing-architectures.patch nvdimm-pmem-cleanup-alloc_dax-error-handling.patch dm-cleanup-alloc_dax-error-handling.patch dcssblk-cleanup-alloc_dax-error-handling.patch virtio-cleanup-alloc_dax-error-handling.patch