fs: pass flags to copy_fs()

Turn the umh boolean into a flags argument. Idle threads need their own
case in copy_fs() as well and that's nicer than a second boolean.

No functional changes.

Link: https://patch.msgid.link/20261013-work-fs-idle_fs-v1-1-2063d1bcb5aa@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
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Christian Brauner 2026-10-13 00:11:06 +02:00
commit 9cd0df397a
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