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 95BC1AD4B for ; Tue, 17 Jun 2025 00:01:54 +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=1750118514; cv=none; b=lIAhpNkbIHkHBEtsIOV8VGpDtxdc6NKIX1r34JVRVJFaZcZuXfty8kw8IairUdam6IqeMBh7DV6Xq3kgu5FW2uO+VC1Y9iNqS0V29J1+Ow0z/YNszF+WwpNrBnK/9cPxZM11wjAFIKktAYmFBwjMDcsdIfkUpppZXZ+XMjg/DZ0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750118514; c=relaxed/simple; bh=e5otu0ZJ11DpywlAU0sogknpVrsAGuQ9hOcTH2Xvr/w=; h=Date:To:From:Subject:Message-Id; b=eukelxbx5RvL/ZmzlaIdnnikuhovZi+xHJwazWMqxySKE+eTBRrYaKZEDmyLRuknaWAm85Sbl9/9GAdgIyV09gPrdGRIREruHWJRUKCeqSpWzRn/FQ06Zbxelx3BWFaAN53Ti3EkGrP0mi3o8ZUdVQLkV6bBLhGuJE4hZDj79L4= 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=XLuDts0Z; 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="XLuDts0Z" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 68867C4CEEA; Tue, 17 Jun 2025 00:01:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1750118514; bh=e5otu0ZJ11DpywlAU0sogknpVrsAGuQ9hOcTH2Xvr/w=; h=Date:To:From:Subject:From; b=XLuDts0ZLruO0AE22tVR3nHgrITm0GiPpgI9x4cr7XpHNY0jHO8Gy7I2NDOsB1MPk tjD/kiec8xR526JzosAe6VLrrkpV8A9TKCWbqSsbz7/fsYYxPeb+TQJ+fp7dAqC+Aw qOSbIsmTALcfpcS3XWIO8d7ksfIHXcHgpW/GkuSI= Date: Mon, 16 Jun 2025 17:01:53 -0700 To: mm-commits@vger.kernel.org,zhang.lyra@gmail.com,willy@infradead.org,will@kernel.org,m.szyprowski@samsung.com,lorenzo.stoakes@oracle.com,john@groves.net,jhubbard@nvidia.com,jgg@nvidia.com,hch@lst.de,gerald.schaefer@linux.ibm.com,debug@rivosinc.com,david@redhat.com,dan.j.williams@intel.com,bjorn@rivosinc.com,bjorn@kernel.org,balbirs@nvidia.com,apopple@nvidia.com,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-memremap-remove-unused-devmap_managed_key.patch added to mm-new branch Message-Id: <20250617000154.68867C4CEEA@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/memremap: remove unused devmap_managed_key has been added to the -mm mm-new branch. Its filename is mm-memremap-remove-unused-devmap_managed_key.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memremap-remove-unused-devmap_managed_key.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. 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: Alistair Popple Subject: mm/memremap: remove unused devmap_managed_key Date: Mon, 16 Jun 2025 21:58:16 +1000 It's no longer used so remove it. Link: https://lkml.kernel.org/r/51ccdbbc3d7b76a7f6e2aefb543eba52d653a230.1750075065.git-series.apopple@nvidia.com Signed-off-by: Alistair Popple Reviewed-by: Jason Gunthorpe Cc: Balbir Singh Cc: Björn Töpel Cc: Björn Töpel Cc: Christoph Hellwig Cc: Chunyan Zhang Cc: Dan Williams Cc: David Hildenbrand Cc: Deepak Gupta Cc: Gerald Schaefer Cc: Inki Dae Cc: John Groves Cc: John Hubbard Cc: Lorenzo Stoakes Cc: Matthew Wilcox (Oracle) Cc: Will Deacon Signed-off-by: Andrew Morton --- mm/memremap.c | 27 --------------------------- 1 file changed, 27 deletions(-) --- a/mm/memremap.c~mm-memremap-remove-unused-devmap_managed_key +++ a/mm/memremap.c @@ -38,30 +38,6 @@ unsigned long memremap_compat_align(void EXPORT_SYMBOL_GPL(memremap_compat_align); #endif -#ifdef CONFIG_FS_DAX -DEFINE_STATIC_KEY_FALSE(devmap_managed_key); -EXPORT_SYMBOL(devmap_managed_key); - -static void devmap_managed_enable_put(struct dev_pagemap *pgmap) -{ - if (pgmap->type == MEMORY_DEVICE_FS_DAX) - static_branch_dec(&devmap_managed_key); -} - -static void devmap_managed_enable_get(struct dev_pagemap *pgmap) -{ - if (pgmap->type == MEMORY_DEVICE_FS_DAX) - static_branch_inc(&devmap_managed_key); -} -#else -static void devmap_managed_enable_get(struct dev_pagemap *pgmap) -{ -} -static void devmap_managed_enable_put(struct dev_pagemap *pgmap) -{ -} -#endif /* CONFIG_FS_DAX */ - static void pgmap_array_delete(struct range *range) { xa_store_range(&pgmap_array, PHYS_PFN(range->start), PHYS_PFN(range->end), @@ -150,7 +126,6 @@ void memunmap_pages(struct dev_pagemap * percpu_ref_exit(&pgmap->ref); WARN_ONCE(pgmap->altmap.alloc, "failed to free all reserved pages\n"); - devmap_managed_enable_put(pgmap); } EXPORT_SYMBOL_GPL(memunmap_pages); @@ -349,8 +324,6 @@ void *memremap_pages(struct dev_pagemap if (error) return ERR_PTR(error); - devmap_managed_enable_get(pgmap); - /* * Clear the pgmap nr_range as it will be incremented for each * successfully processed range. This communicates how many _ Patches currently in -mm which might be from apopple@nvidia.com are mm-convert-pxd_devmap-checks-to-vma_is_dax.patch mm-filter-zone-device-pages-returned-from-folio_walk_start.patch mm-convert-vmf_insert_mixed-from-using-pte_devmap-to-pte_special.patch mm-remove-remaining-uses-of-pfn_dev.patch mm-gup-remove-pxx_devmap-usage-from-get_user_pages.patch mm-huge_memory-remove-pxd_devmap-usage-from-insert_pxd_pfn.patch mm-remove-redundant-pxd_devmap-calls.patch mm-khugepaged-remove-redundant-pmd_devmap-check.patch powerpc-remove-checks-for-devmap-pages-and-pmds-puds.patch fs-dax-remove-fs_dax_limited-config-option.patch mm-remove-devmap-related-functions-and-page-table-bits.patch mm-remove-pfn_map-pfn_special-pfn_sg_chain-and-pfn_sg_last.patch mm-remove-callers-of-pfn_t-functionality.patch mm-memremap-remove-unused-devmap_managed_key.patch