| vmscan.c (5515061d22f0f9976ae7815864bfd22042d36848) | vmscan.c (68243e76ee343d63c6cf76978588a885951e2818) |
|---|---|
| 1/* 2 * linux/mm/vmscan.c 3 * 4 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds 5 * 6 * Swap reorganised 29.12.95, Stephen Tweedie. 7 * kswapd added: 7.1.96 sct 8 * Removed kswapd_ctl limits, and swap out as many pages as needed --- 2153 unchanged lines hidden (view full) --- 2162 return; 2163 2164 /* Check if the pfmemalloc reserves are ok */ 2165 first_zones_zonelist(zonelist, high_zoneidx, NULL, &zone); 2166 pgdat = zone->zone_pgdat; 2167 if (pfmemalloc_watermark_ok(pgdat)) 2168 return; 2169 | 1/* 2 * linux/mm/vmscan.c 3 * 4 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds 5 * 6 * Swap reorganised 29.12.95, Stephen Tweedie. 7 * kswapd added: 7.1.96 sct 8 * Removed kswapd_ctl limits, and swap out as many pages as needed --- 2153 unchanged lines hidden (view full) --- 2162 return; 2163 2164 /* Check if the pfmemalloc reserves are ok */ 2165 first_zones_zonelist(zonelist, high_zoneidx, NULL, &zone); 2166 pgdat = zone->zone_pgdat; 2167 if (pfmemalloc_watermark_ok(pgdat)) 2168 return; 2169 |
| 2170 /* Account for the throttling */ 2171 count_vm_event(PGSCAN_DIRECT_THROTTLE); 2172 |
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| 2170 /* 2171 * If the caller cannot enter the filesystem, it's possible that it 2172 * is due to the caller holding an FS lock or performing a journal 2173 * transaction in the case of a filesystem like ext[3|4]. In this case, 2174 * it is not safe to block on pfmemalloc_wait as kswapd could be 2175 * blocked waiting on the same lock. Instead, throttle for up to a 2176 * second before continuing. 2177 */ --- 1276 unchanged lines hidden --- | 2173 /* 2174 * If the caller cannot enter the filesystem, it's possible that it 2175 * is due to the caller holding an FS lock or performing a journal 2176 * transaction in the case of a filesystem like ext[3|4]. In this case, 2177 * it is not safe to block on pfmemalloc_wait as kswapd could be 2178 * blocked waiting on the same lock. Instead, throttle for up to a 2179 * second before continuing. 2180 */ --- 1276 unchanged lines hidden --- |