Messages in this thread | | | Subject | Re: [PATCH v4 1/2] mm: refactor __vunmap() to avoid duplicated call to find_vm_area() | From | Eric Dumazet <> | Date | Thu, 18 Apr 2019 16:17:59 -0700 |
| |
On 04/18/2019 03:24 PM, Andrew Morton wrote:
> afaict, vfree() will only do a mutex_trylock() in > try_purge_vmap_area_lazy(). So does vfree actually sleep in any > situation? Whether or not local interrupts are enabled?
We would be in a big trouble if vfree() could potentially sleep...
Random example : __free_fdtable() called from rcu callback.
| |