Messages in this thread | | | Date | Fri, 13 Jan 2023 16:07:31 +0800 | From | "lilingfeng (A)" <> | Subject | Question about how to trigger BUG_ON() in sm_disk_new_block() |
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Hello,
I notice the patch 4feaef830de7ffdd8352e1fe14ad3bf13c9688f8 (dm space map common: fix to ensure new block isn't already in use) can explain the BUG_ON() in sm_disk_new_block(). However, I'm still confused since I can't find the code path in which 'begin' field was not being updated (as you say "increment of a data block reference count due to breaking sharing of a neighbour block in the same btree leaf").
What I found are as below: break_sharing alloc_data_block dm_pool_alloc_data_block dm_sm_new_block sm_disk_new_block sm_ll_find_free_block smd->begin = *b + 1
May I bother you to list the path?
Thanks
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