diff options
Diffstat (limited to 'drivers/block/brd.c')
| -rw-r--r-- | drivers/block/brd.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/block/brd.c b/drivers/block/brd.c index c18586fccb6f..c548a5a6c1a0 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Ram backed block device driver. * @@ -96,13 +97,8 @@ static struct page *brd_insert_page(struct brd_device *brd, sector_t sector) /* * Must use NOIO because we don't want to recurse back into the * block or filesystem layers from page reclaim. - * - * Cannot support DAX and highmem, because our ->direct_access - * routine for DAX must return memory that is always addressable. - * If DAX was reworked to use pfns and kmap throughout, this - * restriction might be able to be lifted. */ - gfp_flags = GFP_NOIO | __GFP_ZERO; + gfp_flags = GFP_NOIO | __GFP_ZERO | __GFP_HIGHMEM; page = alloc_page(gfp_flags); if (!page) return NULL; @@ -158,6 +154,12 @@ static void brd_free_pages(struct brd_device *brd) pos++; /* + * It takes 3.4 seconds to remove 80GiB ramdisk. + * So, we need cond_resched to avoid stalling the CPU. + */ + cond_resched(); + + /* * This assumes radix_tree_gang_lookup always returns as * many pages as possible. If the radix-tree code changes, * so will this have to. |