diff options
Diffstat (limited to 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 8ec38b11b361..0b739f360cec 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -25,7 +25,6 @@ struct address_space; struct mem_cgroup; -struct hmm; /* * Each physical page in the system has a struct page associated with @@ -158,8 +157,17 @@ struct page { struct { /* ZONE_DEVICE pages */ /** @pgmap: Points to the hosting device page map. */ struct dev_pagemap *pgmap; - unsigned long hmm_data; - unsigned long _zd_pad_1; /* uses mapping */ + void *zone_device_data; + /* + * ZONE_DEVICE private pages are counted as being + * mapped so the next 3 words hold the mapping, index, + * and private fields from the source anonymous or + * page cache page while the page is migrated to device + * private memory. + * ZONE_DEVICE MEMORY_DEVICE_FS_DAX pages also + * use the mapping, index, and private fields when + * pmem backed DAX files are mapped. + */ }; /** @rcu_head: You can use this to free a page by RCU. */ @@ -329,7 +337,9 @@ struct vm_area_struct { struct file * vm_file; /* File we map to (can be NULL). */ void * vm_private_data; /* was vm_pte (shared mem) */ +#ifdef CONFIG_SWAP atomic_long_t swap_readahead_info; +#endif #ifndef CONFIG_MMU struct vm_region *vm_region; /* NOMMU mapping region */ #endif @@ -500,11 +510,6 @@ struct mm_struct { atomic_long_t hugetlb_usage; #endif struct work_struct async_put_work; - -#if IS_ENABLED(CONFIG_HMM) - /* HMM needs to track a few things per mm */ - struct hmm *hmm; -#endif } __randomize_layout; /* |