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2f61652d660ec1ffdadf926401a174c11f5c13a7
fd_write_vmcore() will indefinitely spin for a non-blocking file-descriptor that would block. However, if the fd is non-blocking, how does it make sense to spin? Change this behavior to return an error instead. Note that this can only happen with an fd provided by a management application. The fd opened internally by dump-guest-memory is blocking. While there, also fix 'writen_size' variable name. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
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