Brian Atkinson 60fc173251 Adding ZERO_PAGE detection ... On some architectures ZERO_PAGE is unavailable because it references a GPL exported symbol of empty_zero_page. Originally e08b993 removed the call to PAGE_ZERO(0) for assignment to the abd_zero_page. However, a simple check can be done to avoid a kernel allocation and free for the abd_zero_page if ZERO_PAGE is available. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Brian Atkinson <batkinson@lanl.gov> Closes #13199		2022-05-20 10:33:24 -07:00
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freebsd	FreeBSD: Implement hole-punching support	2022-05-17 11:15:29 -07:00
linux	Adding ZERO_PAGE detection	2022-05-20 10:33:24 -07:00