Re: [PATCH 4.4 4.9 4.14] loop: Add LOOP_SET_DIRECT_IO to compat ioctl

Ops, please forgive the wrong in-reply-to messge id :) Cheers, Alessio On Wed, Oct 23, 2019 at 06:17:36PM +0100, Alessio Balsini wrote: > [ Upstream commit fdbe4eeeb1aac219b14f10c0ed31ae5d1123e9b8 ] > > Enabling Direct I/O with loop devices helps reducing memory usage by > avoiding double cachin

[PATCH 4.4 4.9 4.14] loop: Add LOOP_SET_DIRECT_IO to compat ioctl

[ Upstream commit fdbe4eeeb1aac219b14f10c0ed31ae5d1123e9b8 ] Enabling Direct I/O with loop devices helps reducing memory usage by avoiding double caching. 32 bit applications running on 64 bits systems are currently not able to request direct I/O because is missing from the lo_compat_ioctl. This