On Wed, Apr 28, 2021 at 10:19:28PM +0000, Alexey Makhalov wrote: > I've recently discovered that doing infinite loop of > systemctl start <ext4_on_lvm>.mount, and > systemctl stop <ext4_on_lvm>.mount > linearly increases percpu allocator memory consumption. > In several hours, it might lead to system instability by > consuming most of the memory. > > Bug is not reproducible when the ext4 filesystem is on > physical partition, but it is persistent when ext4 is on > logical volume. Why is this the case? It sounds like we're looking a buffer for each mount where the block size is not 1k. It shouldn't matter whether it is a physical partition or not. - Ted
