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mm: convert core mm to mm_flags_*() accessors

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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.

This will result in the debug output being that of a bitmap output, which
will result in a minor change here, but since this is for debug only, this
should have no bearing.

Otherwise, no functional changes intended.

[akpm@linux-foundation.org: fix typo in comment]Link: https://lkml.kernel.org/r/1eb2266f4408798a55bda00cb04545a3203aa572.1755012943.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Barry Song <baohua@kernel.org>
Cc: Ben Segall <bsegall@google.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Marc Rutland <mark.rutland@arm.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Namhyung kim <namhyung@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: xu xin <xu.xin16@zte.com.cn>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Lorenzo Stoakes
2025-08-12 16:44:11 +01:00
committed by Andrew Morton
parent bb6525f2f8
commit 12e423ba4e
14 changed files with 63 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
mm/ksm.c
View File

@@ -1217,8 +1217,8 @@ mm_exiting:
spin_unlock(&ksm_mmlist_lock);
mm_slot_free(mm_slot_cache, mm_slot);
clear_bit(MMF_VM_MERGEABLE, &mm->flags);
clear_bit(MMF_VM_MERGE_ANY, &mm->flags);
mm_flags_clear(MMF_VM_MERGEABLE, mm);
mm_flags_clear(MMF_VM_MERGE_ANY, mm);
mmdrop(mm);
} else
spin_unlock(&ksm_mmlist_lock);
@@ -2620,8 +2620,8 @@ no_vmas:
spin_unlock(&ksm_mmlist_lock);
mm_slot_free(mm_slot_cache, mm_slot);
clear_bit(MMF_VM_MERGEABLE, &mm->flags);
clear_bit(MMF_VM_MERGE_ANY, &mm->flags);
mm_flags_clear(MMF_VM_MERGEABLE, mm);
mm_flags_clear(MMF_VM_MERGE_ANY, mm);
mmap_read_unlock(mm);
mmdrop(mm);
} else {
@@ -2742,7 +2742,7 @@ static int __ksm_del_vma(struct vm_area_struct *vma)
vm_flags_t ksm_vma_flags(const struct mm_struct *mm, const struct file *file,
vm_flags_t vm_flags)
{
if (test_bit(MMF_VM_MERGE_ANY, &mm->flags) &&
if (mm_flags_test(MMF_VM_MERGE_ANY, mm) &&
__ksm_should_add_vma(file, vm_flags))
vm_flags |= VM_MERGEABLE;
@@ -2784,16 +2784,16 @@ int ksm_enable_merge_any(struct mm_struct *mm)
{
int err;
if (test_bit(MMF_VM_MERGE_ANY, &mm->flags))
if (mm_flags_test(MMF_VM_MERGE_ANY, mm))
return 0;
if (!test_bit(MMF_VM_MERGEABLE, &mm->flags)) {
if (!mm_flags_test(MMF_VM_MERGEABLE, mm)) {
err = __ksm_enter(mm);
if (err)
return err;
}
set_bit(MMF_VM_MERGE_ANY, &mm->flags);
mm_flags_set(MMF_VM_MERGE_ANY, mm);
ksm_add_vmas(mm);
return 0;
@@ -2815,7 +2815,7 @@ int ksm_disable_merge_any(struct mm_struct *mm)
{
int err;
if (!test_bit(MMF_VM_MERGE_ANY, &mm->flags))
if (!mm_flags_test(MMF_VM_MERGE_ANY, mm))
return 0;
err = ksm_del_vmas(mm);
@@ -2824,7 +2824,7 @@ int ksm_disable_merge_any(struct mm_struct *mm)
return err;
}
clear_bit(MMF_VM_MERGE_ANY, &mm->flags);
mm_flags_clear(MMF_VM_MERGE_ANY, mm);
return 0;
}
@@ -2832,9 +2832,9 @@ int ksm_disable(struct mm_struct *mm)
{
mmap_assert_write_locked(mm);
if (!test_bit(MMF_VM_MERGEABLE, &mm->flags))
if (!mm_flags_test(MMF_VM_MERGEABLE, mm))
return 0;
if (test_bit(MMF_VM_MERGE_ANY, &mm->flags))
if (mm_flags_test(MMF_VM_MERGE_ANY, mm))
return ksm_disable_merge_any(mm);
return ksm_del_vmas(mm);
}
@@ -2852,7 +2852,7 @@ int ksm_madvise(struct vm_area_struct *vma, unsigned long start,
if (!vma_ksm_compatible(vma))
return 0;
if (!test_bit(MMF_VM_MERGEABLE, &mm->flags)) {
if (!mm_flags_test(MMF_VM_MERGEABLE, mm)) {
err = __ksm_enter(mm);
if (err)
return err;
@@ -2912,7 +2912,7 @@ int __ksm_enter(struct mm_struct *mm)
list_add_tail(&slot->mm_node, &ksm_scan.mm_slot->slot.mm_node);
spin_unlock(&ksm_mmlist_lock);
set_bit(MMF_VM_MERGEABLE, &mm->flags);
mm_flags_set(MMF_VM_MERGEABLE, mm);
mmgrab(mm);
if (needs_wakeup)
@@ -2954,8 +2954,8 @@ void __ksm_exit(struct mm_struct *mm)
if (easy_to_free) {
mm_slot_free(mm_slot_cache, mm_slot);
clear_bit(MMF_VM_MERGE_ANY, &mm->flags);
clear_bit(MMF_VM_MERGEABLE, &mm->flags);
mm_flags_clear(MMF_VM_MERGE_ANY, mm);
mm_flags_clear(MMF_VM_MERGEABLE, mm);
mmdrop(mm);
} else if (mm_slot) {
mmap_write_lock(mm);