From: Phil Sutter <phil(a)nwl.cc>
Date: Fri, 20 Nov 2015 18:17:16 +0100
The following series aims to improve lib/test_rhashtable in
Patch 1 allows the kernel to reschedule so the test does not block too
long on slow systems.
Patch 2 fixes behaviour under pressure, retrying inserts in non-permanent
error case (-EBUSY).
Patch 3 auto-adjusts the upper table size limit according to the number
of threads (in concurrency test). In fact, the current default is
already too small.
Patch 4 makes it possible to retry inserts even in supposedly permanent
error case (-ENOMEM) to expose rhashtable's remaining problem of
-ENOMEM being not as permanent as it is expected to be.
Changes since v1:
- Introduce insert_retry() which is then used in single-threaded test as
- Do not retry inserts by default if -ENOMEM was returned.
- Rename the retry counter to be a bit more verbose about what it
- Add patch 4 as a debugging aid.
Series applied, thanks Phil.