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Prevent stack overflows in cli_merge with CAS and writeback cache

fsync-feedback
Vitaliy Filippov 2023-09-03 02:40:15 +03:00
parent f600cc07b0
commit cd543a90bc
1 changed files with 11 additions and 5 deletions
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16
src/cli_merge.cpp
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@ -53,6 +53,7 @@ struct snap_merger_t
std::map<inode_t, std::vector<uint64_t>> layer_lists;
std::map<inode_t, uint64_t> layer_block_size;
std::map<inode_t, uint64_t> layer_list_pos;
std::vector<snap_rw_op_t*> continue_rwo, continue_rwo2;
int in_flight = 0;
uint64_t last_fsync_offset = 0;
uint64_t last_written_offset = 0;
@ -304,6 +305,12 @@ struct snap_merger_t
oit = merge_offsets.begin();
resume_5:
// Now read, overwrite and optionally delete offsets one by one
continue_rwo2.swap(continue_rwo);
for (auto rwo: continue_rwo2)
{
next_write(rwo);
}
continue_rwo2.clear();
while (in_flight < parent->iodepth*parent->parallel_osds &&
oit != merge_offsets.end() && !rwo_error.size())
{
@ -464,7 +471,8 @@ struct snap_merger_t
rwo->error_offset = op->offset;
rwo->error_read = true;
}
next_write(rwo);
continue_rwo.push_back(rwo);
parent->ringloop->wakeup();
};
parent->cli->execute(op);
}
@ -544,11 +552,9 @@ struct snap_merger_t
}
// Increment CAS version
rwo->op.version = subop->version;
if (use_cas)
next_write(rwo);
else
autofree_op(rwo);
delete subop;
continue_rwo.push_back(rwo);
parent->ringloop->wakeup();
};
parent->cli->execute(subop);
}