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Message-ID: <cc67a56f9a8746a8ec7d9791853dc892c1c33e0b.1755012943.git.lorenzo.stoakes@oracle.com>
Date: Tue, 12 Aug 2025 16:44:18 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Alexander Gordeev <agordeev@...ux.ibm.com>,
Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
"David S . Miller" <davem@...emloft.net>,
Andreas Larsson <andreas@...sler.com>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Andy Lutomirski <luto@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
Borislav Petkov <bp@...en8.de>, "H . Peter Anvin" <hpa@...or.com>,
Alexander Viro <viro@...iv.linux.org.uk>,
Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
Kees Cook <kees@...nel.org>, David Hildenbrand <david@...hat.com>,
Zi Yan <ziy@...dia.com>, Baolin Wang <baolin.wang@...ux.alibaba.com>,
"Liam R . Howlett" <Liam.Howlett@...cle.com>,
Nico Pache <npache@...hat.com>, Ryan Roberts <ryan.roberts@....com>,
Dev Jain <dev.jain@....com>, Barry Song <baohua@...nel.org>,
Xu Xin <xu.xin16@....com.cn>,
Chengming Zhou <chengming.zhou@...ux.dev>,
Vlastimil Babka <vbabka@...e.cz>, Mike Rapoport <rppt@...nel.org>,
Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>,
David Rientjes <rientjes@...gle.com>,
Shakeel Butt <shakeel.butt@...ux.dev>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Kan Liang <kan.liang@...ux.intel.com>,
Masami Hiramatsu <mhiramat@...nel.org>,
Oleg Nesterov <oleg@...hat.com>, Juri Lelli <juri.lelli@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>,
Mel Gorman <mgorman@...e.de>, Valentin Schneider <vschneid@...hat.com>,
Jason Gunthorpe <jgg@...pe.ca>, John Hubbard <jhubbard@...dia.com>,
Peter Xu <peterx@...hat.com>, Jann Horn <jannh@...gle.com>,
Pedro Falcato <pfalcato@...e.de>, Matthew Wilcox <willy@...radead.org>,
Mateusz Guzik <mjguzik@...il.com>, linux-s390@...r.kernel.org,
linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
linux-trace-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: [PATCH 09/10] mm: convert remaining users to mm_flags_*() accessors
As part of the effort to move to mm->flags becoming a bitmap field, convert
existing users to making use of the mm_flags_*() accessors which will, when
the conversion is complete, be the only means of accessing mm_struct flags.
No functional change intended.
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
---
fs/proc/array.c | 2 +-
fs/proc/base.c | 4 ++--
fs/proc/task_mmu.c | 2 +-
kernel/fork.c | 2 +-
4 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/proc/array.c b/fs/proc/array.c
index d6a0369caa93..c286dc12325e 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -422,7 +422,7 @@ static inline void task_thp_status(struct seq_file *m, struct mm_struct *mm)
bool thp_enabled = IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE);
if (thp_enabled)
- thp_enabled = !test_bit(MMF_DISABLE_THP, &mm->flags);
+ thp_enabled = !mm_flags_test(MMF_DISABLE_THP, mm);
seq_printf(m, "THP_enabled:\t%d\n", thp_enabled);
}
diff --git a/fs/proc/base.c b/fs/proc/base.c
index f0c093c58aaf..b997ceef9135 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1163,7 +1163,7 @@ static int __set_oom_adj(struct file *file, int oom_adj, bool legacy)
struct task_struct *p = find_lock_task_mm(task);
if (p) {
- if (test_bit(MMF_MULTIPROCESS, &p->mm->flags)) {
+ if (mm_flags_test(MMF_MULTIPROCESS, p->mm)) {
mm = p->mm;
mmgrab(mm);
}
@@ -3276,7 +3276,7 @@ static int proc_pid_ksm_stat(struct seq_file *m, struct pid_namespace *ns,
seq_printf(m, "ksm_merging_pages %lu\n", mm->ksm_merging_pages);
seq_printf(m, "ksm_process_profit %ld\n", ksm_process_profit(mm));
seq_printf(m, "ksm_merge_any: %s\n",
- test_bit(MMF_VM_MERGE_ANY, &mm->flags) ? "yes" : "no");
+ mm_flags_test(MMF_VM_MERGE_ANY, mm) ? "yes" : "no");
ret = mmap_read_lock_killable(mm);
if (ret) {
mmput(mm);
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index e64cf40ce9c4..e8e7bef34531 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1592,7 +1592,7 @@ static inline bool pte_is_pinned(struct vm_area_struct *vma, unsigned long addr,
return false;
if (!is_cow_mapping(vma->vm_flags))
return false;
- if (likely(!test_bit(MMF_HAS_PINNED, &vma->vm_mm->flags)))
+ if (likely(!mm_flags_test(MMF_HAS_PINNED, vma->vm_mm)))
return false;
folio = vm_normal_folio(vma, addr, pte);
if (!folio)
diff --git a/kernel/fork.c b/kernel/fork.c
index b311caec6419..68c81539193d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1887,7 +1887,7 @@ static void copy_oom_score_adj(u64 clone_flags, struct task_struct *tsk)
/* We need to synchronize with __set_oom_adj */
mutex_lock(&oom_adj_mutex);
- set_bit(MMF_MULTIPROCESS, &tsk->mm->flags);
+ mm_flags_set(MMF_MULTIPROCESS, tsk->mm);
/* Update the values in case they were changed after copy_signal */
tsk->signal->oom_score_adj = current->signal->oom_score_adj;
tsk->signal->oom_score_adj_min = current->signal->oom_score_adj_min;
--
2.50.1
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