diff options
| author | Shivank Garg <shivankg@amd.com> | 2025-06-11 05:27:07 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-09 22:42:08 -0700 |
| commit | a984f16fba2cbadfd8f3310cf506a484dc5bdeb6 (patch) | |
| tree | 5e9d205f33fdb7fac4c75d7e7f8642ca3a91bf3d | |
| parent | a788b6e571f3cb1aceb1611e97010be7334cbd63 (diff) | |
mm: use folio_expected_ref_count() helper for reference counting
Replace open-coded folio reference count calculations with the
folio_expected_ref_count().
No functional changes intended.
Link: https://lkml.kernel.org/r/20250611052706.515408-2-shivankg@amd.com
Signed-off-by: Shivank Garg <shivankg@amd.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Marc Rutland <mark.rutland@arm.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Namhyung kim <namhyung@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | kernel/events/uprobes.c | 3 | ||||
| -rw-r--r-- | mm/memfd.c | 3 |
2 files changed, 2 insertions, 4 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 4c965ba77f9f..8a601df87072 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -436,8 +436,7 @@ static int __uprobe_write_opcode(struct vm_area_struct *vma, * there are no unexpected folio references ... */ if (is_register || userfaultfd_missing(vma) || - (folio_ref_count(folio) != folio_mapcount(folio) + 1 + - folio_test_swapcache(folio) * folio_nr_pages(folio))) + (folio_ref_count(folio) != folio_expected_ref_count(folio) + 1)) goto remap; /* diff --git a/mm/memfd.c b/mm/memfd.c index 4fc98abe6627..65a107f72e39 100644 --- a/mm/memfd.c +++ b/mm/memfd.c @@ -32,8 +32,7 @@ static bool memfd_folio_has_extra_refs(struct folio *folio) { - return folio_ref_count(folio) - folio_mapcount(folio) != - folio_nr_pages(folio); + return folio_ref_count(folio) != folio_expected_ref_count(folio); } static void memfd_tag_pins(struct xa_state *xas) |