| writeback.c (8be98d2f2a0a262f8bf8a0bc1fdf522b3c7aab17) | writeback.c (cda25b82c47496f2da0785af5a0aa72a8990cec2) |
|---|---|
| 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * background writeback - scan btree for dirty data and write it to the backing 4 * device 5 * 6 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com> 7 * Copyright 2012 Google, Inc. 8 */ --- 31 unchanged lines hidden (view full) --- 40 41 /* 42 * Unfortunately there is no control of global dirty data. If the 43 * user states that they want 10% dirty data in the cache, and has, 44 * e.g., 5 backing volumes of equal size, we try and ensure each 45 * backing volume uses about 2% of the cache for dirty data. 46 */ 47 uint32_t bdev_share = | 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * background writeback - scan btree for dirty data and write it to the backing 4 * device 5 * 6 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com> 7 * Copyright 2012 Google, Inc. 8 */ --- 31 unchanged lines hidden (view full) --- 40 41 /* 42 * Unfortunately there is no control of global dirty data. If the 43 * user states that they want 10% dirty data in the cache, and has, 44 * e.g., 5 backing volumes of equal size, we try and ensure each 45 * backing volume uses about 2% of the cache for dirty data. 46 */ 47 uint32_t bdev_share = |
| 48 div64_u64(bdev_sectors(dc->bdev) << WRITEBACK_SHARE_SHIFT, | 48 div64_u64(bdev_nr_sectors(dc->bdev) << WRITEBACK_SHARE_SHIFT, |
| 49 c->cached_dev_sectors); 50 51 uint64_t cache_dirty_target = 52 div_u64(cache_sectors * dc->writeback_percent, 100); 53 54 /* Ensure each backing dev gets at least one dirty share */ 55 if (bdev_share < 1) 56 bdev_share = 1; --- 1002 unchanged lines hidden --- | 49 c->cached_dev_sectors); 50 51 uint64_t cache_dirty_target = 52 div_u64(cache_sectors * dc->writeback_percent, 100); 53 54 /* Ensure each backing dev gets at least one dirty share */ 55 if (bdev_share < 1) 56 bdev_share = 1; --- 1002 unchanged lines hidden --- |