From: Christoph Hellwig <hch@lst.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-nvdimm@lists.01.org, Jan Kara <jack@suse.cz>,
Matthew Wilcox <mawilcox@microsoft.com>,
linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org,
linux-mm@kvack.org, Jeff Moyer <jmoyer@redhat.com>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
linux-fsdevel@vger.kernel.org, akpm@linux-foundation.org,
hch@lst.de
Subject: Re: [PATCH 14/15] dax: associate mappings with inodes, and warn if dma collides with truncate
Date: Fri, 10 Nov 2017 10:08:18 +0100 [thread overview]
Message-ID: <20171110090818.GE4895@lst.de> (raw)
In-Reply-To: <150949217152.24061.9869502311102659784.stgit@dwillia2-desk3.amr.corp.intel.com>
> + struct {
> + /*
> + * ZONE_DEVICE pages are never on an lru or handled by
> + * a slab allocator, this points to the hosting device
> + * page map.
> + */
> + struct dev_pagemap *pgmap;
> + /*
> + * inode association for MEMORY_DEVICE_FS_DAX page-idle
> + * callbacks. Note that we don't use ->mapping since
> + * that has hard coded page-cache assumptions in
> + * several paths.
> + */
What assumptions? I'd much rather fix those up than having two fields
that have the same functionality.
next prev parent reply other threads:[~2017-11-10 9:08 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-31 23:21 [PATCH 00/15] dax: prep work for fixing dax-dma vs truncate collisions Dan Williams
2017-10-31 23:21 ` [PATCH 01/15] dax: quiet bdev_dax_supported() Dan Williams
2017-11-02 20:11 ` Christoph Hellwig
2017-10-31 23:21 ` [PATCH 02/15] mm, dax: introduce pfn_t_special() Dan Williams
2017-11-03 2:32 ` Michael Ellerman
2017-10-31 23:21 ` [PATCH 03/15] dax: require 'struct page' by default for filesystem dax Dan Williams
2017-10-31 23:21 ` [PATCH 04/15] brd: remove dax support Dan Williams
2017-11-02 20:12 ` Christoph Hellwig
2017-11-04 16:31 ` Jens Axboe
2017-10-31 23:22 ` [PATCH 05/15] dax: stop using VM_MIXEDMAP for dax Dan Williams
2017-10-31 23:22 ` [PATCH 06/15] dax: stop using VM_HUGEPAGE " Dan Williams
2017-10-31 23:22 ` [PATCH 07/15] dax: stop requiring a live device for dax_flush() Dan Williams
2017-11-02 20:12 ` Christoph Hellwig
2017-10-31 23:22 ` [PATCH 08/15] dax: store pfns in the radix Dan Williams
2017-10-31 23:22 ` [PATCH 09/15] tools/testing/nvdimm: add 'bio_delay' mechanism Dan Williams
2017-10-31 23:22 ` [PATCH 10/15] IB/core: disable memory registration of fileystem-dax vmas Dan Williams
2017-11-02 20:13 ` Christoph Hellwig
2017-11-02 21:06 ` Dan Williams
2017-10-31 23:22 ` [PATCH 11/15] [media] v4l2: disable filesystem-dax mapping support Dan Williams
2017-10-31 23:22 ` [PATCH 12/15] mm, dax: enable filesystems to trigger page-idle callbacks Dan Williams
2017-11-10 9:04 ` Christoph Hellwig
2017-10-31 23:22 ` [PATCH 13/15] mm, devmap: introduce CONFIG_DEVMAP_MANAGED_PAGES Dan Williams
2017-11-10 9:06 ` Christoph Hellwig
2017-10-31 23:22 ` [PATCH 14/15] dax: associate mappings with inodes, and warn if dma collides with truncate Dan Williams
2017-11-10 9:08 ` Christoph Hellwig [this message]
2017-12-20 1:11 ` Dan Williams
2017-12-20 14:38 ` Jan Kara
2017-12-20 22:41 ` Dan Williams
2017-12-21 12:14 ` Jan Kara
2017-12-21 17:31 ` Dan Williams
2017-12-22 8:51 ` Jan Kara
2017-12-20 22:14 ` Dave Chinner
2017-10-31 23:22 ` [PATCH 15/15] wait_bit: introduce {wait_on,wake_up}_devmap_idle Dan Williams
2017-11-10 9:09 ` Christoph Hellwig
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