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 67B9C331ED3 for ; Mon, 21 Sep 2026 03:31:46 +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=1789961507; cv=none; b=R9yuNvCk5yPA73yo9DhFUh2Hs23Negb5/ZjTUtMv1m2DWkkv2Jh7fTLkMgGhUnR/cDy/S7pbGpCvwy0/PrgkOTjC0Cb+IC0f4iwo1uzA3/Q3Og26VXLd8gY4QZlq+bd4x8qQUTryJ8gylbpmx2X2BVYKnq7cOsM4uvCIu91cv2o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789961507; c=relaxed/simple; bh=KnfIQ9bbO4DStFoJM59q0wYwiXSqjtWU75RfAWH165c=; h=Date:To:From:Subject:Message-Id; b=MZuRqTganQeU9iibnG4A2rbA/xRCLB2TkLoI3v72qFa2YZae4x6HoWNjnMgCUPltYzRS10RMWyScKVBU3hE9tbADIYDdORSDPNRxXColchxPoN3GOSvLzpMoXKpDeGCKailq9cJR8hYwns4mSRB/+soTX6xSgpkH/Fmd5TO7Waw= 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=Qj2RDwYW; 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="Qj2RDwYW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DBD51F000FF; Mon, 21 Sep 2026 03:31:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789961506; bh=O7rvNuAUevfo1MhOmjjz1g3SmOJQlkR+XP6Uf+fdjyE=; h=Date:To:From:Subject; b=Qj2RDwYWyvGxyjdxTiunWxWlm8udRWKeg9Eoe+PKzhqmRLK/P9zdoYmAUvVajsrAv FkQbZDUs6KKNlesmbooqV+Z3eviCrPa0NFnliTh26dRFqrg/elRBvc866WclagANEM 52V+JEBsrt2jFjeemLC0FqVd1mNulmN+QneTymDI= Date: Sun, 20 Sep 2026 20:31:45 -0700 To: mm-commits@vger.kernel.org,ziy@nvidia.com,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-page-flags-remove-pg_private.patch removed from -mm tree Message-Id: <20260921033146.3DBD51F000FF@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 an updated version will be issued ------------------------------------------------------ From: Zi Yan Subject: mm/page-flags: remove PG_private Date: Sun, 13 Sep 2026 22:24:14 -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. Assisted-by: LLM Link: https://lore.kernel.org/20260913-remove-pg_private-v4-16-848550f7574e@nvidia.com Signed-off-by: Zi Yan Signed-off-by: Andrew Morton Acked-by: David Hildenbrand (Arm) 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 | 19 ++----------------- include/trace/events/mmflags.h | 2 +- kernel/vmcore_info.c | 1 - 3 files changed, 3 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 */ @@ -575,7 +571,7 @@ FOLIO_FLAG(swapbacked, FOLIO_HEAD_PAGE) /* * Private page markings that may be used by the filesystem that owns the page * for its own purposes. - * - PG_private and PG_private_2 cause release_folio() and co to be invoked + * - folio->private and PG_private_2 cause release_folio() and co to be invoked */ static __always_inline bool folio_test_private(const struct folio *folio) @@ -583,17 +579,6 @@ static __always_inline bool folio_test_p return folio->private; } -static __always_inline int PagePrivate(const struct page *page) -{ - return !!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 usb-gadgetfs-do-not-warn-about-excessively-large-memory-allocations.patch