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authorNitesh Shetty <nj.shetty@samsung.com>2023-06-05 09:23:53 +0300
committerJens Axboe <axboe@kernel.dk>2023-06-06 01:15:35 +0300
commit8cfb98196cceec35416041c6b91212d2b99392e4 (patch)
tree16ed2fd5af84c8a9e805fd315bd705026a2c17c3 /drivers/block
parentddad59331a4e16088468ca0ad228a9fe32d7955a (diff)
downloadlinux-8cfb98196cceec35416041c6b91212d2b99392e4.tar.xz
null_blk: Fix: memory release when memory_backed=1
Memory/pages are not freed, when unloading nullblk driver. Steps to reproduce issue 1.free -h total used free shared buff/cache available Mem: 7.8Gi 260Mi 7.1Gi 3.0Mi 395Mi 7.3Gi Swap: 0B 0B 0B 2.modprobe null_blk memory_backed=1 3.dd if=/dev/urandom of=/dev/nullb0 oflag=direct bs=1M count=1000 4.modprobe -r null_blk 5.free -h total used free shared buff/cache available Mem: 7.8Gi 1.2Gi 6.1Gi 3.0Mi 398Mi 6.3Gi Swap: 0B 0B 0B Signed-off-by: Anuj Gupta <anuj20.g@samsung.com> Signed-off-by: Nitesh Shetty <nj.shetty@samsung.com> Link: https://lore.kernel.org/r/20230605062354.24785-1-nj.shetty@samsung.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/null_blk/main.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index b3fedafe301e..864013019d6b 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -2244,6 +2244,7 @@ static void null_destroy_dev(struct nullb *nullb)
struct nullb_device *dev = nullb->dev;
null_del_dev(nullb);
+ null_free_device_storage(dev, false);
null_free_dev(dev);
}