tree 561debb117b99ffa60fcf1c772923087dbec300b
parent c36f878509108c970907dc391d6562297881b400
author Zac Medico <zmedico@gentoo.org> 1639255204 -0800
committer Zac Medico <zmedico@gentoo.org> 1639271653 -0800
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file_copy: handle zero bytes copied by copy_file_range (bug 828844)

When copy_file_range copied zero bytes, fall back to sendfile,
so that we don't call copy_file_range in an infinite loop.

Bug: https://bugs.gentoo.org/828844
Tested-by: John Helmert III <ajak@gentoo.org>
Signed-off-by: Zac Medico <zmedico@gentoo.org>