On Fri, Nov 02, 2018 at 10:01:09AM +0000, Tim Smith wrote: > xen_disk currently allocates memory to hold the data for each ioreq > as that ioreq is used, and frees it afterwards. Because it requires > page-aligned blocks, this interacts poorly with non-page-aligned > allocations and balloons the heap. > > Instead, allocate the maximum possible requirement, which is > BLKIF_MAX_SEGMENTS_PER_REQUEST pages (currently 11 pages) when > the ioreq is created, and keep that allocation until it is destroyed. > Since the ioreqs themselves are re-used via a free list, this > should actually improve memory usage. > > Signed-off-by: Tim Smith <tim.sm...@citrix.com>
Acked-by: Anthony PERARD <anthony.per...@citrix.com> -- Anthony PERARD
