make unblocked reads from external objects return a zeroed page.

* serverboot/default_pager.c (struct dstruct): Add boolean_t external field.
(default_pager_add): Set ds->external to TRUE or FALSE depending whether the
object is external.
(default_read): Add external parameter.  If no_block(block) returns 1, if
external is TRUE, zero fill the page and return PAGER_SUCCESS instead of
PAGER_ABSENT.
(seqnos_memory_object_data_request): Pass ds->external as additional
parameter to default_read.

0 files changed, 0 insertions, 0 deletions