diff options
| author | Zi Yan <ziy@nvidia.com> | 2026-05-17 09:54:06 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-05-28 21:31:38 -0700 |
| commit | f169519e94df1efd3c288ffa0a10eff952747a23 (patch) | |
| tree | 18864b9435d9aa248809d09e9ae139beda529a92 /mm | |
| parent | 39dbc624f3c058e64f51223274f8f53dd8021694 (diff) | |
| download | linux-next-history-f169519e94df1efd3c288ffa0a10eff952747a23.tar.gz | |
mm/khugepaged: remove READ_ONLY_THP_FOR_FS check in hugepage_enabled()
Remove the READ_ONLY_THP_FOR_FS gate and khugepaged for file-backed
pmd-sized hugepages are enabled by the global transparent hugepage
control. khugepaged can still be enabled by per-size control for anon and
shmem when the global control is off.
Add shmem_hpage_pmd_enabled() stub for !CONFIG_SHMEM to remove
IS_ENABLED(SHMEM) in hugepage_enabled().
Clean up hugepage_enabled() by moving anon code to anon_hpage_enabled().
Link: https://lore.kernel.org/20260517135416.1434539-5-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Nico Pache <npache@redhat.com>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Barry Song <baohua@kernel.org>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: David Sterba <dsterba@suse.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Liam Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/khugepaged.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index d71241082e8dc..90332ac118d84 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -528,26 +528,32 @@ static inline int collapse_test_exit_or_disable(struct mm_struct *mm) mm_flags_test(MMF_DISABLE_THP_COMPLETELY, mm); } +static inline bool anon_hpage_enabled(void) +{ + if (READ_ONCE(huge_anon_orders_always)) + return true; + if (READ_ONCE(huge_anon_orders_madvise)) + return true; + if (READ_ONCE(huge_anon_orders_inherit) && + hugepage_global_enabled()) + return true; + return false; +} + static bool hugepage_enabled(void) { /* * We cover the anon, shmem and the file-backed case here; file-backed - * hugepages, when configured in, are determined by the global control. + * hugepages are determined by the global control. * Anon hugepages are determined by its per-size mTHP control. * Shmem pmd-sized hugepages are also determined by its pmd-size control, * except when the global shmem_huge is set to SHMEM_HUGE_DENY. */ - if (IS_ENABLED(CONFIG_READ_ONLY_THP_FOR_FS) && - hugepage_global_enabled()) - return true; - if (READ_ONCE(huge_anon_orders_always)) + if (hugepage_global_enabled()) return true; - if (READ_ONCE(huge_anon_orders_madvise)) - return true; - if (READ_ONCE(huge_anon_orders_inherit) && - hugepage_global_enabled()) + if (anon_hpage_enabled()) return true; - if (IS_ENABLED(CONFIG_SHMEM) && shmem_hpage_pmd_enabled()) + if (shmem_hpage_pmd_enabled()) return true; return false; } |