samba - Sep 2019 - vfs_fruit and Mac - What is "File Deferred Close"?

Hello,

When using macOS Mojave 10.14.6 to connect to an SMB share on a samba 4.9.4
server with vfs_fruit enabled, I noticed the following logged to the mac console
while connecting:

"server wsmbfs_mount: Found older macOS server, disabling File Deferred
Close for xxxxx volume"

Could anyone explain "File Deferred Close" in macOS and why it's
disabled when connecting to a SMB share with vfs_fruit enabled?


Thank you,

Coan Dillahunty
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