erofs currently starts per-CPU workers on module_init() which is not necessary. This starting of resources on cpu hotplug and unplug shows up in Android where the erofs in built-in and erofs is not yet being used.
Following patch moves the creation of per-CPU workers on the first mount and they are removed when on the last unmount. I tested this with erofs-utils test as well as running reads on erofs mountpoint while running aggressive cpu online/offline in a loop, withoutn any issue. Thanks, Sandeep. Sandeep Dhavale (1): erofs: lazily initialize per-CPU workers and CPU hotplug support fs/erofs/internal.h | 5 +++++ fs/erofs/super.c | 27 +++++++++++++++++++++++++++ fs/erofs/zdata.c | 35 +++++++++++++++++++++++------------ 3 files changed, 55 insertions(+), 12 deletions(-) -- 2.49.0.472.ge94155a9ec-goog
