[zfs-discuss] How big a write to a regular file is atomic?

[Richard L. Hamilton]

and does it vary by filesystem type? I know I ought to know the
answer, but it's been a long time since I thought about it, and
I must not be looking at the right man pages.  And also, if it varies,
how does one tell?  For a pipe, there's fpathconf() with _PC_PIPE_BUF,
but how about for a regular file?
 
 
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