diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/huge_memory.c | 7 | ||||
| -rw-r--r-- | mm/page_alloc.c | 50 | ||||
| -rw-r--r-- | mm/readahead.c | 9 | ||||
| -rw-r--r-- | mm/slub.c | 6 |
4 files changed, 22 insertions, 50 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 343a2b7e5..07f28251f 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2872,7 +2872,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, struct page *page; pgtable_t pgtable; pmd_t _pmd; - bool young, write, dirty; + bool young, write, dirty, soft_dirty; unsigned long addr; int i; @@ -2898,6 +2898,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, write = pmd_write(*pmd); young = pmd_young(*pmd); dirty = pmd_dirty(*pmd); + soft_dirty = pmd_soft_dirty(*pmd); pmdp_huge_split_prepare(vma, haddr, pmd); pgtable = pgtable_trans_huge_withdraw(mm, pmd); @@ -2914,6 +2915,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, swp_entry_t swp_entry; swp_entry = make_migration_entry(page + i, write); entry = swp_entry_to_pte(swp_entry); + if (soft_dirty) + entry = pte_swp_mksoft_dirty(entry); } else { entry = mk_pte(page + i, vma->vm_page_prot); entry = maybe_mkwrite(entry, vma); @@ -2921,6 +2924,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, entry = pte_wrprotect(entry); if (!young) entry = pte_mkold(entry); + if (soft_dirty) + entry = pte_mksoft_dirty(entry); } if (dirty) SetPageDirty(page + i); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 4c03a8fb4..a3e27ba36 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3266,53 +3266,6 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, return NULL; } -static inline bool -should_compact_retry(struct alloc_context *ac, int order, int alloc_flags, - enum compact_result compact_result, enum migrate_mode *migrate_mode, - int compaction_retries) -{ - int max_retries = MAX_COMPACT_RETRIES; - - if (!order) - return false; - - /* - * compaction considers all the zone as desperately out of memory - * so it doesn't really make much sense to retry except when the - * failure could be caused by weak migration mode. - */ - if (compaction_failed(compact_result)) { - if (*migrate_mode == MIGRATE_ASYNC) { - *migrate_mode = MIGRATE_SYNC_LIGHT; - return true; - } - return false; - } - - /* - * make sure the compaction wasn't deferred or didn't bail out early - * due to locks contention before we declare that we should give up. - * But do not retry if the given zonelist is not suitable for - * compaction. - */ - if (compaction_withdrawn(compact_result)) - return compaction_zonelist_suitable(ac, order, alloc_flags); - - /* - * !costly requests are much more important than __GFP_REPEAT - * costly ones because they are de facto nofail and invoke OOM - * killer to move on while costly can fail and users are ready - * to cope with that. 1/4 retries is rather arbitrary but we - * would need much more detailed feedback from compaction to - * make a better decision. - */ - if (order > PAGE_ALLOC_COSTLY_ORDER) - max_retries /= 4; - if (compaction_retries <= max_retries) - return true; - - return false; -} #else static inline struct page * __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, @@ -3323,6 +3276,8 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, return NULL; } +#endif /* CONFIG_COMPACTION */ + static inline bool should_compact_retry(struct alloc_context *ac, unsigned int order, int alloc_flags, enum compact_result compact_result, @@ -3349,7 +3304,6 @@ should_compact_retry(struct alloc_context *ac, unsigned int order, int alloc_fla } return false; } -#endif /* CONFIG_COMPACTION */ /* Perform direct synchronous page reclaim */ static int diff --git a/mm/readahead.c b/mm/readahead.c index 40be3ae0a..7f9f8c346 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -8,6 +8,7 @@ */ #include <linux/kernel.h> +#include <linux/dax.h> #include <linux/gfp.h> #include <linux/export.h> #include <linux/blkdev.h> @@ -545,6 +546,14 @@ do_readahead(struct address_space *mapping, struct file *filp, if (!mapping || !mapping->a_ops) return -EINVAL; + /* + * Readahead doesn't make sense for DAX inodes, but we don't want it + * to report a failure either. Instead, we just return success and + * don't do any work. + */ + if (dax_mapping(mapping)) + return 0; + return force_page_cache_readahead(mapping, filp, index, nr); } @@ -3479,6 +3479,7 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page, */ static void free_partial(struct kmem_cache *s, struct kmem_cache_node *n) { + LIST_HEAD(discard); struct page *page, *h; BUG_ON(irqs_disabled()); @@ -3486,13 +3487,16 @@ static void free_partial(struct kmem_cache *s, struct kmem_cache_node *n) list_for_each_entry_safe(page, h, &n->partial, lru) { if (!page->inuse) { remove_partial(n, page); - discard_slab(s, page); + list_add(&page->lru, &discard); } else { list_slab_objects(s, page, "Objects remaining in %s on __kmem_cache_shutdown()"); } } spin_unlock_irq(&n->list_lock); + + list_for_each_entry_safe(page, h, &discard, lru) + discard_slab(s, page); } /* |