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 54A2BA59 for ; Mon, 17 Mar 2025 05:09:52 +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=1742188192; cv=none; b=LMdaRSKyRtIuo71WnoZoe26wjOUneZg7lELFK/ktcvlFPblhrlTivgrg+16Hls7eW90Ie3O/+VQv11JN9XHHj9DL4UJ3pwQxUj0B7FtjHaE9nsqDcK5U7xVfg8UqAAdcSmfXmeSF3azSe19u7Q42MGLw8EpkJq58GwAglp3k63w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742188192; c=relaxed/simple; bh=Yfzc0prdTZ/0tB7+1xAzUBWoNbJklltVKleAR9z9exI=; h=Date:To:From:Subject:Message-Id; b=hC1SoJk7fdhjVyTUZ3cgJSxW8mjqzyfsle3IAC88u6l2f6VM2GYiz6hQs6yD5OtjFUGcYvu3p6cB709tiBrIym4Vz6B9oU4aoxcno33q2lSRTT0bwiFXp+XqyCcmKrnmIHzp5h1BOgiOVw5wg8+iDOodqc01rPHKGHFmL47ACwU= 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=tjQqhFv1; 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="tjQqhFv1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2799EC4CEEC; Mon, 17 Mar 2025 05:09:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1742188192; bh=Yfzc0prdTZ/0tB7+1xAzUBWoNbJklltVKleAR9z9exI=; h=Date:To:From:Subject:From; b=tjQqhFv1Jywa7AsjcSQqr2Cymz/FmqCmHNTLtIplxC1E+M2UsJYqoG/FzQlME41bs iP3wASjTuqiUAFI3ycB6pbQW6WeM634au2kkcsVAprienUNsXlHdMf0myeBPLrTZGP YRggY6fnI0mxkbBFDT5Y8CF9QBdM6HHLkG6EKWKE= Date: Sun, 16 Mar 2025 22:09:51 -0700 To: mm-commits@vger.kernel.org,v-songbaohua@oppo.com,vbabka@suse.cz,sj@kernel.org,si.yanteng@linux.dev,simona.vetter@ffwll.ch,peterz@infradead.org,peterx@redhat.com,pasha.tatashin@soleen.com,oleg@redhat.com,mhiramat@kernel.org,lyude@redhat.com,lorenzo.stoakes@oracle.com,liam.howlett@oracle.com,kherbst@redhat.com,jhubbard@nvidia.com,jglisse@redhat.com,jgg@nvidia.com,jannh@google.com,dakr@kernel.org,corbet@lwn.net,apopple@nvidia.com,alexs@kernel.org,airlied@gmail.com,david@redhat.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-use-single-swp_device_exclusive-entry-type.patch removed from -mm tree Message-Id: <20250317050952.2799EC4CEEC@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: use single SWP_DEVICE_EXCLUSIVE entry type has been removed from the -mm tree. Its filename was mm-use-single-swp_device_exclusive-entry-type.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: David Hildenbrand Subject: mm: use single SWP_DEVICE_EXCLUSIVE entry type Date: Mon, 10 Feb 2025 20:37:48 +0100 There is no need for the distinction anymore; let's merge the readable and writable device-exclusive entries into a single device-exclusive entry type. Link: https://lkml.kernel.org/r/20250210193801.781278-7-david@redhat.com Signed-off-by: David Hildenbrand Acked-by: Simona Vetter Reviewed-by: Alistair Popple Tested-by: Alistair Popple Cc: Alex Shi Cc: Danilo Krummrich Cc: Dave Airlie Cc: Jann Horn Cc: Jason Gunthorpe Cc: Jerome Glisse Cc: John Hubbard Cc: Jonathan Corbet Cc: Karol Herbst Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Lyude Cc: "Masami Hiramatsu (Google)" Cc: Oleg Nesterov Cc: Pasha Tatashin Cc: Peter Xu Cc: Peter Zijlstra (Intel) Cc: SeongJae Park Cc: Vlastimil Babka Cc: Yanteng Si Cc: Barry Song Signed-off-by: Andrew Morton --- include/linux/swap.h | 7 +++---- include/linux/swapops.h | 27 ++++----------------------- mm/mprotect.c | 8 -------- mm/page_table_check.c | 5 ++--- mm/rmap.c | 2 +- 5 files changed, 10 insertions(+), 39 deletions(-) --- a/include/linux/swap.h~mm-use-single-swp_device_exclusive-entry-type +++ a/include/linux/swap.h @@ -74,14 +74,13 @@ static inline int current_is_kswapd(void * to a special SWP_DEVICE_{READ|WRITE} entry. * * When a page is mapped by the device for exclusive access we set the CPU page - * table entries to special SWP_DEVICE_EXCLUSIVE_* entries. + * table entries to a special SWP_DEVICE_EXCLUSIVE entry. */ #ifdef CONFIG_DEVICE_PRIVATE -#define SWP_DEVICE_NUM 4 +#define SWP_DEVICE_NUM 3 #define SWP_DEVICE_WRITE (MAX_SWAPFILES+SWP_HWPOISON_NUM+SWP_MIGRATION_NUM) #define SWP_DEVICE_READ (MAX_SWAPFILES+SWP_HWPOISON_NUM+SWP_MIGRATION_NUM+1) -#define SWP_DEVICE_EXCLUSIVE_WRITE (MAX_SWAPFILES+SWP_HWPOISON_NUM+SWP_MIGRATION_NUM+2) -#define SWP_DEVICE_EXCLUSIVE_READ (MAX_SWAPFILES+SWP_HWPOISON_NUM+SWP_MIGRATION_NUM+3) +#define SWP_DEVICE_EXCLUSIVE (MAX_SWAPFILES+SWP_HWPOISON_NUM+SWP_MIGRATION_NUM+2) #else #define SWP_DEVICE_NUM 0 #endif --- a/include/linux/swapops.h~mm-use-single-swp_device_exclusive-entry-type +++ a/include/linux/swapops.h @@ -186,26 +186,16 @@ static inline bool is_writable_device_pr return unlikely(swp_type(entry) == SWP_DEVICE_WRITE); } -static inline swp_entry_t make_readable_device_exclusive_entry(pgoff_t offset) +static inline swp_entry_t make_device_exclusive_entry(pgoff_t offset) { - return swp_entry(SWP_DEVICE_EXCLUSIVE_READ, offset); -} - -static inline swp_entry_t make_writable_device_exclusive_entry(pgoff_t offset) -{ - return swp_entry(SWP_DEVICE_EXCLUSIVE_WRITE, offset); + return swp_entry(SWP_DEVICE_EXCLUSIVE, offset); } static inline bool is_device_exclusive_entry(swp_entry_t entry) { - return swp_type(entry) == SWP_DEVICE_EXCLUSIVE_READ || - swp_type(entry) == SWP_DEVICE_EXCLUSIVE_WRITE; + return swp_type(entry) == SWP_DEVICE_EXCLUSIVE; } -static inline bool is_writable_device_exclusive_entry(swp_entry_t entry) -{ - return unlikely(swp_type(entry) == SWP_DEVICE_EXCLUSIVE_WRITE); -} #else /* CONFIG_DEVICE_PRIVATE */ static inline swp_entry_t make_readable_device_private_entry(pgoff_t offset) { @@ -227,12 +217,7 @@ static inline bool is_writable_device_pr return false; } -static inline swp_entry_t make_readable_device_exclusive_entry(pgoff_t offset) -{ - return swp_entry(0, 0); -} - -static inline swp_entry_t make_writable_device_exclusive_entry(pgoff_t offset) +static inline swp_entry_t make_device_exclusive_entry(pgoff_t offset) { return swp_entry(0, 0); } @@ -242,10 +227,6 @@ static inline bool is_device_exclusive_e return false; } -static inline bool is_writable_device_exclusive_entry(swp_entry_t entry) -{ - return false; -} #endif /* CONFIG_DEVICE_PRIVATE */ #ifdef CONFIG_MIGRATION --- a/mm/mprotect.c~mm-use-single-swp_device_exclusive-entry-type +++ a/mm/mprotect.c @@ -225,14 +225,6 @@ static long change_pte_range(struct mmu_ newpte = swp_entry_to_pte(entry); if (pte_swp_uffd_wp(oldpte)) newpte = pte_swp_mkuffd_wp(newpte); - } else if (is_writable_device_exclusive_entry(entry)) { - entry = make_readable_device_exclusive_entry( - swp_offset(entry)); - newpte = swp_entry_to_pte(entry); - if (pte_swp_soft_dirty(oldpte)) - newpte = pte_swp_mksoft_dirty(newpte); - if (pte_swp_uffd_wp(oldpte)) - newpte = pte_swp_mkuffd_wp(newpte); } else if (is_pte_marker_entry(entry)) { /* * Ignore error swap entries unconditionally, --- a/mm/page_table_check.c~mm-use-single-swp_device_exclusive-entry-type +++ a/mm/page_table_check.c @@ -196,9 +196,8 @@ EXPORT_SYMBOL(__page_table_check_pud_cle /* Whether the swap entry cached writable information */ static inline bool swap_cached_writable(swp_entry_t entry) { - return is_writable_device_exclusive_entry(entry) || - is_writable_device_private_entry(entry) || - is_writable_migration_entry(entry); + return is_writable_device_private_entry(entry) || + is_writable_migration_entry(entry); } static inline void page_table_check_pte_flags(pte_t pte) --- a/mm/rmap.c~mm-use-single-swp_device_exclusive-entry-type +++ a/mm/rmap.c @@ -2492,7 +2492,7 @@ struct page *make_device_exclusive(struc * do_swap_page() will trigger the conversion back while holding the * folio lock. */ - entry = make_writable_device_exclusive_entry(page_to_pfn(page)); + entry = make_device_exclusive_entry(page_to_pfn(page)); swp_pte = swp_entry_to_pte(entry); if (pte_soft_dirty(fw.pte)) swp_pte = pte_swp_mksoft_dirty(swp_pte); _ Patches currently in -mm which might be from david@redhat.com are mm-factor-out-large-folio-handling-from-folio_order-into-folio_large_order.patch mm-factor-out-large-folio-handling-from-folio_nr_pages-into-folio_large_nr_pages.patch mm-let-_folio_nr_pages-overlay-memcg_data-in-first-tail-page.patch mm-let-_folio_nr_pages-overlay-memcg_data-in-first-tail-page-fix.patch mm-move-hugetlb-specific-things-in-folio-to-page.patch mm-move-_pincount-in-folio-to-page-on-32bit.patch mm-move-_entire_mapcount-in-folio-to-page-on-32bit.patch mm-rmap-pass-dst_vma-to-folio_dup_file_rmap_pte-and-friends.patch mm-rmap-pass-vma-to-__folio_add_rmap.patch mm-rmap-abstract-large-mapcount-operations-for-large-folios-hugetlb.patch bit_spinlock-__always_inline-unlock-functions.patch mm-rmap-use-folio_large_nr_pages-in-add-remove-functions.patch mm-rmap-basic-mm-owner-tracking-for-large-folios-hugetlb.patch mm-copy-on-write-cow-reuse-support-for-pte-mapped-thp.patch mm-convert-folio_likely_mapped_shared-to-folio_maybe_mapped_shared.patch mm-config_no_page_mapcount-to-prepare-for-not-maintain-per-page-mapcounts-in-large-folios.patch fs-proc-page-remove-per-page-mapcount-dependency-for-proc-kpagecount-config_no_page_mapcount.patch fs-proc-task_mmu-remove-per-page-mapcount-dependency-for-pm_mmap_exclusive-config_no_page_mapcount.patch fs-proc-task_mmu-remove-per-page-mapcount-dependency-for-mapmax-config_no_page_mapcount.patch fs-proc-task_mmu-remove-per-page-mapcount-dependency-for-smaps-smaps_rollup-config_no_page_mapcount.patch mm-stop-maintaining-the-per-page-mapcount-of-large-folios-config_no_page_mapcount.patch