DEVEL15-windows-afsd-btree-20090228

DEVEL15-windows-afsd-btree-20090228

LICENSE MIT

Change how BPlusDir enumerations behave with regards to bulk stat
operations.  If the number of entries in the enumeration is larger
than the number of cm_scache objects, then using the previous model
of cm_BPlusDirEnumBulkStat being called for the entire enumeration
list results in the early objects being recycled and the status
info discarded before the caller of cm_BPlusDirNextEnumEntry()
receives the name.

The revised model triggers bulk stat operations from within
NextEnumEntry() as objects requiring status fetching are about
to be returned to the caller.  This reduces the thrashing of the
stat cache.

We should consider adding a flag field to cm_BPlusDirEnumerate()
or cm_BPlusDirNextEnumEntry() to permit enumeration without
status fetching.

(cherry picked from commit a32971251670acc7944dcd4b1eade1ab161e587f)