Re: [PATCH v1] madvise.2: Document MADV_POPULATE_READ and MADV_POPULATE_WRITE

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+.BR MADV_POPULATE_WRITE " (since Linux 5.14)
+Populate (prefault) page tables writable for the whole range without actually
+writing. Depending on the underlying mapping, preallocate memory or read the

Is this read or write?
just reading and trying to understand :)

It's reading. Assume you have a file with existing content mapped into a
process. Once you touch a page (read/write/execute) that maps to blocks
with existing content, you'll have to load these blocks from disk first.

Got it. Thanks for explaining!

Best regards,
Pankaj