From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 65C63426438 for ; Fri, 9 Oct 2026 05:59:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791525596; cv=none; b=dIPpfXiQhJxkzQsdFFWc1CWedkapGBeOedpTyCRmfNKV1wOUyZBJbdt7y6Mg5wcIrU50CaVu5LwqOTNwDABjQjetKznFH74usDiv3cBMzF023kj+x9glx/eLFNKAAHouQyREOkswCYkrotCL+cliUuchuWTA/P8Kc3RiCdAE4Ck= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791525596; c=relaxed/simple; bh=8vwpzqgPzP3Lkini+SH8nVio3ASvOznNjImZxgC1Dqk=; h=Date:To:From:Subject:Message-Id; b=lqzvF21K7fb5WalGFsNxVJ4ZQadmoJdWmoGcG5IXfbbtItP42l+S6aLGsM/qYXMVyx0+97jcDgRrxd9C4nUx5UD/Cb6d834C3026FoxCvHdRLAiJcs3J/LSFtuGXH80DMrpDokMzaeqg/x8mieP3DpErl9Y9Cawnk4K03Df/jL0= 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=m9hPqvM1; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="m9hPqvM1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3F8EC1F000FF; Fri, 9 Oct 2026 05:59:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791525590; bh=RGv0gyYI/pDwvxCGcS3yu6l7/mrUmt8yjLLUrilM0Eo=; h=Date:To:From:Subject; b=m9hPqvM10jkGb7YFnFbU5LMuK/YNX+dJHagYPTY5fr+qEe3ZyNH/BRkyGVxsHv0UO ZRrCYYUBH0BM0QiZsYEt3Iuatld16Y9jf3PXzYUlFApED9d2YDCjSMvJIk8/mLZrE9 bJV8R7o9+nCbl2TLhqgppygMwFuX7Jmn2VIGMASw= Date: Thu, 08 Oct 2026 22:59:49 -0700 To: mm-commits@vger.kernel.org,willy@infradead.org,vbabka@kernel.org,surenb@google.com,skhan@linuxfoundation.org,ruirui.yang@linux.dev,rppt@kernel.org,rostedt@goodmis.org,pratyush@kernel.org,pasha.tatashin@soleen.com,mhocko@suse.com,mhiramat@kernel.org,mathieu.desnoyers@efficios.com,ljs@kernel.org,liam@infradead.org,jack@suse.cz,david@kernel.org,corbet@lwn.net,baoquan.he@linux.dev,ziy@nvidia.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-page-flags-remove-pg_private.patch removed from -mm tree Message-Id: <20261009055950.3F8EC1F000FF@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/page-flags: remove PG_private has been removed from the -mm tree. Its filename was mm-page-flags-remove-pg_private.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: Zi Yan Subject: mm/page-flags: remove PG_private Date: Sun, 20 Sep 2026 22:28:13 -0400 folio->private != NULL indicates a folio carries private data, replacing PG_private. All PG_private users are converted. Remove PG_private and reserve the space as PG_folio for future use. Unused PG_private functions are removed too. Link: https://lore.kernel.org/20260920-remove-pg_private-v5-17-bb68b6a21869@nvidia.com Signed-off-by: Zi Yan Signed-off-by: Andrew Morton Acked-by: David Hildenbrand (Arm) Assisted-by: LLM Cc: Baoquan He Cc: Mike Rapoport Cc: Pasha Tatashin Cc: Pratyush Yadav Cc: Jonathan Corbet Cc: "Matthew Wilcox (Oracle)" Cc: Jan Kara Cc: Steven Rostedt Cc: Masami Hiramatsu Cc: Dave Young Cc: Shuah Khan Cc: Lorenzo Stoakes Cc: "Liam R. Howlett" Cc: Vlastimil Babka Cc: Suren Baghdasaryan Cc: Michal Hocko Cc: Mathieu Desnoyers --- include/linux/page-flags.h | 18 +----------------- include/trace/events/mmflags.h | 2 +- kernel/vmcore_info.c | 1 - 3 files changed, 2 insertions(+), 19 deletions(-) --- a/include/linux/page-flags.h~mm-page-flags-remove-pg_private +++ a/include/linux/page-flags.h @@ -44,10 +44,6 @@ * Consequently, PG_reserved for a page mapped into user space can indicate * the zero page, the vDSO, MMIO pages or device memory. * - * The PG_private bitflag is set on pagecache pages if they contain filesystem - * specific data (which is normally at page->private). It can be used by - * private allocations for its own usage. - * * During initiation of disk I/O, PG_locked is set. This bit is set before I/O * and cleared when writeback _starts_ or when read _completes_. PG_writeback * is set before writeback starts and cleared when it finishes. @@ -105,7 +101,7 @@ enum pageflags { PG_owner_2, /* Owner use. If pagecache, fs may use */ PG_arch_1, PG_reserved, - PG_private, /* If pagecache, has fs-private data */ + PG_folio, /* Do not use: reserved for folio identification */ PG_private_2, /* If pagecache, has fs aux data */ PG_reclaim, /* To be reclaimed asap */ PG_swapbacked, /* Page is backed by RAM/swap */ @@ -588,18 +584,6 @@ static __always_inline bool folio_test_p return data_race(folio->private); } -static __always_inline int PagePrivate(const struct page *page) -{ - /* See folio_test_private() for data_race() use */ - return !!data_race(page->private); -} - -/* no-ops during transition */ -static __always_inline void folio_set_private(struct folio *folio) { } -static __always_inline void folio_clear_private(struct folio *folio) { } -static __always_inline void SetPagePrivate(struct page *page) { } -static __always_inline void ClearPagePrivate(struct page *page) { } - FOLIO_FLAG(private_2, FOLIO_HEAD_PAGE) /* owner_2 can be set on tail pages for anon memory */ --- a/include/trace/events/mmflags.h~mm-page-flags-remove-pg_private +++ a/include/trace/events/mmflags.h @@ -144,7 +144,7 @@ TRACE_DEFINE_ENUM(___GFP_LAST_BIT); DEF_PAGEFLAG_NAME(owner_2), \ DEF_PAGEFLAG_NAME(arch_1), \ DEF_PAGEFLAG_NAME(reserved), \ - DEF_PAGEFLAG_NAME(private), \ + DEF_PAGEFLAG_NAME(folio), \ DEF_PAGEFLAG_NAME(private_2), \ DEF_PAGEFLAG_NAME(writeback), \ DEF_PAGEFLAG_NAME(head), \ --- a/kernel/vmcore_info.c~mm-page-flags-remove-pg_private +++ a/kernel/vmcore_info.c @@ -216,7 +216,6 @@ static int __init crash_save_vmcoreinfo_ VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES); VMCOREINFO_NUMBER(NR_FREE_PAGES); VMCOREINFO_NUMBER(PG_lru); - VMCOREINFO_NUMBER(PG_private); VMCOREINFO_NUMBER(PG_swapcache); VMCOREINFO_NUMBER(PG_swapbacked); #define PAGE_SLAB_MAPCOUNT_VALUE (PGTY_slab << 24) _ Patches currently in -mm which might be from ziy@nvidia.com are