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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-01-16 07:27:08 +0300 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-03-21 20:01:36 +0300 |
| commit | 421f1ab48452af48b64e205de1caca3d1ba415f4 (patch) | |
| tree | 49c1c82581c8e35f59f8ad318fc68896d8bf5597 /include/linux/pagemap.h | |
| parent | 06d44142d49dc2e02d255ea9d72dc4c20f20388f (diff) | |
| download | linux-421f1ab48452af48b64e205de1caca3d1ba415f4.tar.xz | |
mm: Make large folios depend on THP
Some parts of the VM still depend on THP to handle large folios
correctly. Until those are fixed, prevent creating large folios
if THP are disabled.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'include/linux/pagemap.h')
| -rw-r--r-- | include/linux/pagemap.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 0a2417fc531c..20d7cbabf654 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -306,9 +306,14 @@ static inline void mapping_set_large_folios(struct address_space *mapping) __set_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags); } +/* + * Large folio support currently depends on THP. These dependencies are + * being worked on but are not yet fixed. + */ static inline bool mapping_large_folio_support(struct address_space *mapping) { - return test_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags); + return IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && + test_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags); } static inline int filemap_nr_thps(struct address_space *mapping) |