[Tarantool-patches] [PATCH v2 0/2] Safe truncation and deletion

[Ilya Kosarev <i.kosarev@tarantool.org>]

space:truncate() and space:delete() could fail on memory allocations
when reaching memtx_memory limit. As far as it is quite an ill
behaviour, it is fixed in this patchset through memtx quota enlargement.
Also possible bps_tree_create_leaf NULL dereference issue is fixed.

Branch: https://github.com/tarantool/tarantool/tree/i.kosarev/gh-3807-safe-alloc-on-truncation
Issue: https://github.com/tarantool/tarantool/issues/3807

Changes in v2:
  Approach changed completely: now we are not trying to allocate
  service tuples in some safe way, but increasing memtx quota so
  that space:truncate() and space:delete() won't fail on allocation.

Ilya Kosarev (2):
  b-tree: return NULL on matras_alloc fail
  memtx: increase the memory quota if needed to truncate or delete

 src/box/blackhole.c      |  1 +
 src/box/box.cc           | 36 +++++++++++++++++++++++++++++++++++-
 src/box/engine.c         | 11 +++++++++++
 src/box/engine.h         |  9 +++++++++
 src/box/memtx_engine.c   | 20 ++++++++++++++++++++
 src/box/memtx_engine.h   |  4 ++++
 src/box/service_engine.c |  1 +
 src/box/sysview.c        |  1 +
 src/box/vinyl.c          |  1 +
 src/lib/salad/bps_tree.h |  7 +++++--
 10 files changed, 88 insertions(+), 3 deletions(-)

-- 
2.17.1