| e9a77290 |
1 | #ifndef _ZFS_PAGE_COMPAT_H |
| 2 | #define _ZFS_PAGE_COMPAT_H |
| 3 | |
| 4 | /* |
| 5 | * We have various enum members moving between two separate enum types, |
| 6 | * and accessed by different functions at various times. Centralise the |
| 7 | * insanity. |
| 8 | * |
| 9 | * < v4.8: all enums in zone_stat_item, via global_page_state() |
| 10 | * v4.8: some enums moved to node_stat_item, global_node_page_state() introduced |
| 11 | * v4.13: some enums moved from zone_stat_item to node_state_item |
| 12 | * v4.14: global_page_state() rename to global_zone_page_state() |
| 13 | * |
| 14 | * The defines used here are created by config/kernel-global_page_state.m4 |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * Create our own accessor functions to follow the Linux API changes |
| 19 | */ |
| 20 | #if defined(ZFS_GLOBAL_ZONE_PAGE_STATE) |
| 21 | |
| 22 | /* global_zone_page_state() introduced */ |
| 23 | #if defined(ZFS_ENUM_NODE_STAT_ITEM_NR_FILE_PAGES) |
| 24 | #define nr_file_pages() global_node_page_state(NR_FILE_PAGES) |
| 25 | #else |
| 26 | #define nr_file_pages() global_zone_page_state(NR_FILE_PAGES) |
| 27 | #endif |
| 28 | #if defined(ZFS_ENUM_NODE_STAT_ITEM_NR_INACTIVE_ANON) |
| 29 | #define nr_inactive_anon_pages() global_node_page_state(NR_INACTIVE_ANON) |
| 30 | #else |
| 31 | #define nr_inactive_anon_pages() global_zone_page_state(NR_INACTIVE_ANON) |
| 32 | #endif |
| 33 | #if defined(ZFS_ENUM_NODE_STAT_ITEM_NR_INACTIVE_FILE) |
| 34 | #define nr_inactive_file_pages() global_node_page_state(NR_INACTIVE_FILE) |
| 35 | #else |
| 36 | #define nr_inactive_file_pages() global_zone_page_state(NR_INACTIVE_FILE) |
| 37 | #endif |
| 38 | #if defined(ZFS_ENUM_NODE_STAT_ITEM_NR_SLAB_RECLAIMABLE) |
| 39 | #define nr_slab_reclaimable_pages() global_node_page_state(NR_SLAB_RECLAIMABLE) |
| 40 | #else |
| 41 | #define nr_slab_reclaimable_pages() global_zone_page_state(NR_SLAB_RECLAIMABLE) |
| 42 | #endif |
| 43 | |
| 44 | #elif defined(ZFS_GLOBAL_NODE_PAGE_STATE) |
| 45 | |
| 46 | /* global_node_page_state() introduced */ |
| 47 | #if defined(ZFS_ENUM_NODE_STAT_ITEM_NR_FILE_PAGES) |
| 48 | #define nr_file_pages() global_node_page_state(NR_FILE_PAGES) |
| 49 | #else |
| 50 | #define nr_file_pages() global_page_state(NR_FILE_PAGES) |
| 51 | #endif |
| 52 | #if defined(ZFS_ENUM_NODE_STAT_ITEM_NR_INACTIVE_ANON) |
| 53 | #define nr_inactive_anon_pages() global_node_page_state(NR_INACTIVE_ANON) |
| 54 | #else |
| 55 | #define nr_inactive_anon_pages() global_page_state(NR_INACTIVE_ANON) |
| 56 | #endif |
| 57 | #if defined(ZFS_ENUM_NODE_STAT_ITEM_NR_INACTIVE_FILE) |
| 58 | #define nr_inactive_file_pages() global_node_page_state(NR_INACTIVE_FILE) |
| 59 | #else |
| 60 | #define nr_inactive_file_pages() global_page_state(NR_INACTIVE_FILE) |
| 61 | #endif |
| 62 | #if defined(ZFS_ENUM_NODE_STAT_ITEM_NR_SLAB_RECLAIMABLE) |
| 63 | #define nr_slab_reclaimable_pages() global_node_page_state(NR_SLAB_RECLAIMABLE) |
| 64 | #else |
| 65 | #define nr_slab_reclaimable_pages() global_page_state(NR_SLAB_RECLAIMABLE) |
| 66 | #endif |
| 67 | |
| 68 | #else |
| 69 | |
| 70 | /* global_page_state() only */ |
| 71 | #define nr_file_pages() global_page_state(NR_FILE_PAGES) |
| 72 | #define nr_inactive_anon_pages() global_page_state(NR_INACTIVE_ANON) |
| 73 | #define nr_inactive_file_pages() global_page_state(NR_INACTIVE_FILE) |
| 74 | #define nr_slab_reclaimable_pages() global_page_state(NR_SLAB_RECLAIMABLE) |
| 75 | |
| 76 | #endif /* ZFS_GLOBAL_ZONE_PAGE_STATE */ |
| 77 | |
| 78 | #endif /* _ZFS_PAGE_COMPAT_H */ |
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