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While this can be handled relatively easily in direct I/O scenarios, >> it presents significant challenges in buffered I/O operations. The main >> difficulty arises because the extent size (64K) is larger than the page >> size (4K), and our current code base has substantial limitations in handling >> such cases. >> >> Any thoughts on this? > Large folios in the page cache solve this problem. i.e. it's the > same problem that block size > page size support had to solve. Would that work for an extsize which is not a power-of-2?