Commit 82734209 authored by Zhang Xianwei's avatar Zhang Xianwei Committed by Jens Axboe
Browse files

brd: decrease the number of allocated pages which discarded 



The number of allocated pages which discarded will not decrease.
Fix it.

Fixes: 9ead7efc ("brd: implement discard support")

Signed-off-by: default avatarZhang Xianwei <zhang.xianwei8@zte.com.cn>
Reviewed-by: default avatarMing Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20241128170056565nPKSz2vsP8K8X2uk2iaDG@zte.com.cn


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent e8b8344d

drivers/block/brd.c

+3 −1
Original line number Diff line number Diff line
@@ -231,8 +231,10 @@ static void brd_do_discard(struct brd_device *brd, sector_t sector, u32 size) 
	xa_lock(&brd->brd_pages);

	while (size >= PAGE_SIZE && aligned_sector < rd_size * 2) {

		page = __xa_erase(&brd->brd_pages, aligned_sector >> PAGE_SECTORS_SHIFT);

		if (page)

		if (page) {

			__free_page(page);

			brd->brd_nr_pages--;

		}

		aligned_sector += PAGE_SECTORS;

		size -= PAGE_SIZE;

	}