| compaction.c (1da2f328fa643bd72197dfed0c655148af31e4eb) | compaction.c (6467552ca64c4ddd2b83ed73192107d7145f533b) |
|---|---|
| 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * linux/mm/compaction.c 4 * 5 * Memory compaction for the reduction of external fragmentation. Note that 6 * this heavily depends upon page migration to do all the real heavy 7 * lifting 8 * --- 2300 unchanged lines hidden (view full) --- 2309 .ignore_skip_hint = (prio == MIN_COMPACT_PRIORITY), 2310 .ignore_block_suitable = (prio == MIN_COMPACT_PRIORITY) 2311 }; 2312 struct capture_control capc = { 2313 .cc = &cc, 2314 .page = NULL, 2315 }; 2316 | 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * linux/mm/compaction.c 4 * 5 * Memory compaction for the reduction of external fragmentation. Note that 6 * this heavily depends upon page migration to do all the real heavy 7 * lifting 8 * --- 2300 unchanged lines hidden (view full) --- 2309 .ignore_skip_hint = (prio == MIN_COMPACT_PRIORITY), 2310 .ignore_block_suitable = (prio == MIN_COMPACT_PRIORITY) 2311 }; 2312 struct capture_control capc = { 2313 .cc = &cc, 2314 .page = NULL, 2315 }; 2316 |
| 2317 if (capture) 2318 current->capture_control = &capc; | 2317 current->capture_control = &capc; |
| 2319 2320 ret = compact_zone(&cc, &capc); 2321 2322 VM_BUG_ON(!list_empty(&cc.freepages)); 2323 VM_BUG_ON(!list_empty(&cc.migratepages)); 2324 2325 *capture = capc.page; 2326 current->capture_control = NULL; --- 5 unchanged lines hidden (view full) --- 2332 2333/** 2334 * try_to_compact_pages - Direct compact to satisfy a high-order allocation 2335 * @gfp_mask: The GFP mask of the current allocation 2336 * @order: The order of the current allocation 2337 * @alloc_flags: The allocation flags of the current allocation 2338 * @ac: The context of current allocation 2339 * @prio: Determines how hard direct compaction should try to succeed | 2318 2319 ret = compact_zone(&cc, &capc); 2320 2321 VM_BUG_ON(!list_empty(&cc.freepages)); 2322 VM_BUG_ON(!list_empty(&cc.migratepages)); 2323 2324 *capture = capc.page; 2325 current->capture_control = NULL; --- 5 unchanged lines hidden (view full) --- 2331 2332/** 2333 * try_to_compact_pages - Direct compact to satisfy a high-order allocation 2334 * @gfp_mask: The GFP mask of the current allocation 2335 * @order: The order of the current allocation 2336 * @alloc_flags: The allocation flags of the current allocation 2337 * @ac: The context of current allocation 2338 * @prio: Determines how hard direct compaction should try to succeed |
| 2339 * @capture: Pointer to free page created by compaction will be stored here |
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| 2340 * 2341 * This is the main entry point for direct page compaction. 2342 */ 2343enum compact_result try_to_compact_pages(gfp_t gfp_mask, unsigned int order, 2344 unsigned int alloc_flags, const struct alloc_context *ac, 2345 enum compact_priority prio, struct page **capture) 2346{ 2347 int may_perform_io = gfp_mask & __GFP_IO; --- 392 unchanged lines hidden --- | 2340 * 2341 * This is the main entry point for direct page compaction. 2342 */ 2343enum compact_result try_to_compact_pages(gfp_t gfp_mask, unsigned int order, 2344 unsigned int alloc_flags, const struct alloc_context *ac, 2345 enum compact_priority prio, struct page **capture) 2346{ 2347 int may_perform_io = gfp_mask & __GFP_IO; --- 392 unchanged lines hidden --- |