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A comment on Are You Sure You Want to Use MMAP in Your Database Management System?. Parent comment

Re:Are You Sure You Want to Use MMAP in Your Database Manage... by ayende on Thursday July 06, 2023 @06:02AM (#36613623)
Doesn't help when you work with pages :-)

Assume 512 sectors ( I know those are rare ), but I don't think that there is any guarantees that 4KB page would be:

* Written atomically * Written in a particular order

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Re:Are You Sure You Want to Use MMAP in Your Database Manage... by colanderman on Thursday July 06, 2023 @03:17PM (#36621326)
Even memory ordering guarantees within sector boundaries are sufficient, and something the kernel could provide on its own.
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