diff options
| author | Zi Yan <ziy@nvidia.com> | 2026-05-17 09:54:07 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-06-21 11:37:15 -0700 |
| commit | e4df0f37bd95bff5eb64e2a28eba378d64f4c01e (patch) | |
| tree | 85ab09a9608aabe2832d66ddad338b362b1bb4f1 | |
| parent | efc36a715383439d7987b2d592b7549144fb5aad (diff) | |
mm: remove READ_ONLY_THP_FOR_FS Kconfig option
After removing READ_ONLY_THP_FOR_FS check in file_thp_enabled(),
khugepaged and MADV_COLLAPSE can run on FSes with PMD THP pagecache
support even without READ_ONLY_THP_FOR_FS enabled. Remove the Kconfig
first so that no one can use READ_ONLY_THP_FOR_FS as upcoming commits
remove mapping->nr_thps, which its safe guard mechanism relies on.
Link: https://lore.kernel.org/20260517135416.1434539-6-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
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: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nico Pache <npache@redhat.com>
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>
| -rw-r--r-- | mm/Kconfig | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 97b079372325..776b67c66e82 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -936,17 +936,6 @@ config THP_SWAP For selection by architectures with reasonable THP sizes. -config READ_ONLY_THP_FOR_FS - bool "Read-only THP for filesystems (EXPERIMENTAL)" - depends on TRANSPARENT_HUGEPAGE - - help - Allow khugepaged to put read-only file-backed pages in THP. - - This is marked experimental because it is a new feature. Write - support of file THPs will be developed in the next few release - cycles. - config NO_PAGE_MAPCOUNT bool "No per-page mapcount (EXPERIMENTAL)" help |