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 D72E11E7C1C for ; Sat, 2 Aug 2025 18:54:21 +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=1754160861; cv=none; b=Df3fnYj662Mc9SDAHVVbVPyy4XmdWfNLeUwgpJun3gdWCfBJOqOI8YlVCBpx7w9yOpx+Ju6tjZOUCKYMoEQAmEA0xWORZ9CqTvBgB9BWDHLxHxq2KIdiNnvG0uinwA8OVPKyvY9+5QvytgmzegGhql/696xIe6qdTcn7IBy5wPs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754160861; c=relaxed/simple; bh=3idsfsu21gDtdOWPXU9cX4z+krrZ23iTMhm4VTqaOMI=; h=Date:To:From:Subject:Message-Id; b=oTdKo1BmkDwvtGrudkUnzgI9cv3zMzLtp0f+vJWhKHheVlIELtcCHonkBxKsTXoL3PILpzLFUMLUQ/cPW5NIuIk8Y5GHuu5hff+XDXBm29aWMM+uAZIdlJvuyUB+RP73MEpOaY9cZ+tQAPKxAV/1mAPQZ94I1Lrq7KxnaaXV+n4= 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=lpYvfKPb; 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="lpYvfKPb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 618D2C4CEEF; Sat, 2 Aug 2025 18:54:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1754160861; bh=3idsfsu21gDtdOWPXU9cX4z+krrZ23iTMhm4VTqaOMI=; h=Date:To:From:Subject:From; b=lpYvfKPbzopNVtAxgKxdElGCjOLsKwFKumgdoeMJJoi01MY2BUsE7CH5oh1W12KgL Mik/emD/nw1wdFWBEO1JCboeK/TzvtGIwYMmVyQmDvXaFGCmq6cgj7XnsEZ4gkeX5r MTDn3HsM55i0pi2wbZWOCw4T+WZPQMDVSXUo6GcY= Date: Sat, 02 Aug 2025 11:54:20 -0700 To: mm-commits@vger.kernel.org,vbabka@suse.cz,surenb@google.com,rppt@kernel.org,mhocko@suse.com,liam.howlett@oracle.com,david@redhat.com,lorenzo.stoakes@oracle.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-remove-mm-io-mappingc.patch removed from -mm tree Message-Id: <20250802185421.618D2C4CEEF@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm: remove mm/io-mapping.c has been removed from the -mm tree. Its filename was mm-remove-mm-io-mappingc.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Lorenzo Stoakes Subject: mm: remove mm/io-mapping.c Date: Fri, 25 Jul 2025 15:29:01 +0100 This is dead code, which was used from commit b739f125e4eb ("i915: use io_mapping_map_user") but reverted a month later by commit 0e4fe0c9f2f9 ("Revert "i915: use io_mapping_map_user"") back in 2021. Since then nobody has used it, so remove it. [akpm@linux-foundation.org: update Documentation/core-api/mm-api.rst, per Vlastimil] Link: https://lkml.kernel.org/r/20250725142901.81502-1-lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes Acked-by: David Hildenbrand Acked-by: Vlastimil Babka Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Suren Baghdasaryan Signed-off-by: Andrew Morton --- Documentation/core-api/mm-api.rst | 1 include/linux/io-mapping.h | 3 -- mm/Kconfig | 4 --- mm/Makefile | 1 mm/io-mapping.c | 30 ---------------------------- 5 files changed, 39 deletions(-) --- a/Documentation/core-api/mm-api.rst~mm-remove-mm-io-mappingc +++ a/Documentation/core-api/mm-api.rst @@ -139,4 +139,3 @@ More Memory Management Functions .. kernel-doc:: mm/mmu_notifier.c .. kernel-doc:: mm/balloon_compaction.c .. kernel-doc:: mm/huge_memory.c -.. kernel-doc:: mm/io-mapping.c --- a/include/linux/io-mapping.h~mm-remove-mm-io-mappingc +++ a/include/linux/io-mapping.h @@ -225,7 +225,4 @@ io_mapping_free(struct io_mapping *iomap kfree(iomap); } -int io_mapping_map_user(struct io_mapping *iomap, struct vm_area_struct *vma, - unsigned long addr, unsigned long pfn, unsigned long size); - #endif /* _LINUX_IO_MAPPING_H */ diff --git a/mm/io-mapping.c a/mm/io-mapping.c deleted file mode 100644 --- a/mm/io-mapping.c +++ /dev/null @@ -1,30 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only - -#include -#include - -/** - * io_mapping_map_user - remap an I/O mapping to userspace - * @iomap: the source io_mapping - * @vma: user vma to map to - * @addr: target user address to start at - * @pfn: physical address of kernel memory - * @size: size of map area - * - * Note: this is only safe if the mm semaphore is held when called. - */ -int io_mapping_map_user(struct io_mapping *iomap, struct vm_area_struct *vma, - unsigned long addr, unsigned long pfn, unsigned long size) -{ - vm_flags_t expected_flags = VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP; - - if (WARN_ON_ONCE((vma->vm_flags & expected_flags) != expected_flags)) - return -EINVAL; - - pgprot_t remap_prot = __pgprot((pgprot_val(iomap->prot) & _PAGE_CACHE_MASK) | - (pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK)); - - /* We rely on prevalidation of the io-mapping to skip pfnmap tracking. */ - return remap_pfn_range_notrack(vma, addr, pfn, size, remap_prot); -} -EXPORT_SYMBOL_GPL(io_mapping_map_user); --- a/mm/Kconfig~mm-remove-mm-io-mappingc +++ a/mm/Kconfig @@ -1242,10 +1242,6 @@ config KMAP_LOCAL config KMAP_LOCAL_NON_LINEAR_PTE_ARRAY bool -# struct io_mapping based helper. Selected by drivers that need them -config IO_MAPPING - bool - config MEMFD_CREATE bool "Enable memfd_create() system call" if EXPERT --- a/mm/Makefile~mm-remove-mm-io-mappingc +++ a/mm/Makefile @@ -141,7 +141,6 @@ obj-$(CONFIG_MEMFD_CREATE) += memfd.o obj-$(CONFIG_MAPPING_DIRTY_HELPERS) += mapping_dirty_helpers.o obj-$(CONFIG_PTDUMP) += ptdump.o obj-$(CONFIG_PAGE_REPORTING) += page_reporting.o -obj-$(CONFIG_IO_MAPPING) += io-mapping.o obj-$(CONFIG_HAVE_BOOTMEM_INFO_NODE) += bootmem_info.o obj-$(CONFIG_GENERIC_IOREMAP) += ioremap.o obj-$(CONFIG_SHRINKER_DEBUG) += shrinker_debug.o _ Patches currently in -mm which might be from lorenzo.stoakes@oracle.com are