On Sat, Jun 06, 2020 at 01:57:44PM +0530, Chandan Babu R wrote: > This commit extends the per-inode data extent counter to 47 bits. The > length of 47-bits was chosen because, > Maximum file size = 2^63. > Maximum extent count when using 64k block size = 2^63 / 2^16 = 2^47. What is the use case for a large nuber of extents? I'm not sure why we'd want to bother, but if there is a good reason it really should be documented here.