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rgw_rados: add guard assert in add_io()

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Use the iterator-returning insert operation in std::map, check
assert the insert case.  As a side effect, this makes use of the
inserted object record more clear.

Signed-off-by: Matt Benjamin <mbenjamin@redhat.com>
This commit is contained in:
Matt Benjamin 2017-01-06 12:30:42 -05:00
parent a159f3d1c0
commit d10c37adf9
1 changed files with 6 additions and 1 deletions
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7
src/rgw/rgw_rados.cc
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@ -9656,7 +9656,12 @@ struct get_obj_data : public RefCountedObject {
void add_io(off_t ofs, off_t len, bufferlist **pbl, AioCompletion **pc) {
Mutex::Locker l(lock);
get_obj_io& io = io_map[ofs];
const auto& io_iter = io_map.insert(
map<off_t, get_obj_io>::value_type(ofs, get_obj_io()));
assert(io_iter.second); // assert new insertion
get_obj_io& io = (io_iter.first)->second;
*pbl = &io.bl;
struct get_obj_aio_data aio;