diff options
| -rw-r--r-- | fs/Kconfig | 9 | ||||
| -rw-r--r-- | fs/dax.c | 12 | ||||
| -rw-r--r-- | mm/memremap.c | 4 |
3 files changed, 1 insertions, 24 deletions
diff --git a/fs/Kconfig b/fs/Kconfig index 44b6cdd36dc1..ccdf371a62ed 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -59,7 +59,7 @@ endif # BLOCK config FS_DAX bool "File system based Direct Access (DAX) support" depends on MMU - depends on ZONE_DEVICE || FS_DAX_LIMITED + depends on ZONE_DEVICE select FS_IOMAP select DAX help @@ -95,13 +95,6 @@ config FS_DAX_PMD depends on ZONE_DEVICE depends on TRANSPARENT_HUGEPAGE -# Selected by DAX drivers that do not expect filesystem DAX to support -# get_user_pages() of DAX mappings. I.e. "limited" indicates no support -# for fork() of processes with MAP_SHARED mappings or support for -# direct-I/O to a DAX mapping. -config FS_DAX_LIMITED - bool - # Posix ACL utility routines # # Note: Posix ACLs can be implemented without these helpers. Never use @@ -449,9 +449,6 @@ static void dax_associate_entry(void *entry, struct address_space *mapping, if (dax_is_zero_entry(entry) || dax_is_empty_entry(entry)) return; - if (IS_ENABLED(CONFIG_FS_DAX_LIMITED)) - return; - index = linear_page_index(vma, address & ~(size - 1)); if (shared && (folio->mapping || dax_folio_is_shared(folio))) { if (folio->mapping) @@ -474,9 +471,6 @@ static void dax_disassociate_entry(void *entry, struct address_space *mapping, { struct folio *folio = dax_to_folio(entry); - if (IS_ENABLED(CONFIG_FS_DAX_LIMITED)) - return; - if (dax_is_zero_entry(entry) || dax_is_empty_entry(entry)) return; @@ -768,12 +762,6 @@ struct page *dax_layout_busy_page_range(struct address_space *mapping, pgoff_t end_idx; XA_STATE(xas, &mapping->i_pages, start_idx); - /* - * In the 'limited' case get_user_pages() for dax is disabled. - */ - if (IS_ENABLED(CONFIG_FS_DAX_LIMITED)) - return NULL; - if (!dax_mapping(mapping)) return NULL; diff --git a/mm/memremap.c b/mm/memremap.c index c417c843e9b1..c17e0a69cace 100644 --- a/mm/memremap.c +++ b/mm/memremap.c @@ -332,10 +332,6 @@ void *memremap_pages(struct dev_pagemap *pgmap, int nid) } break; case MEMORY_DEVICE_FS_DAX: - if (IS_ENABLED(CONFIG_FS_DAX_LIMITED)) { - WARN(1, "File system DAX not supported\n"); - return ERR_PTR(-EINVAL); - } params.pgprot = pgprot_decrypted(params.pgprot); break; case MEMORY_DEVICE_GENERIC: |