644a52778a
When ram_block_discard_require() fails, errno is passed to error_setg_errno().
It's a stale value or 0 which is unrelated to ram_block_discard_require().
As ram_block_discard_require() already returns -EBUSY in failure case,
use it as errno for error_setg_errno().
Fixes:
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| .. | ||
| arch_init.c | ||
| async-teardown.c | ||
| balloon.c | ||
| bootdevice.c | ||
| cpu-throttle.c | ||
| cpu-timers.c | ||
| cpus.c | ||
| datadir.c | ||
| device_tree-stub.c | ||
| device_tree.c | ||
| dirtylimit.c | ||
| dma-helpers.c | ||
| globals.c | ||
| ioport.c | ||
| main.c | ||
| memory_ldst.c.inc | ||
| memory_mapping.c | ||
| memory.c | ||
| meson.build | ||
| physmem.c | ||
| qdev-monitor.c | ||
| qemu-seccomp.c | ||
| qtest.c | ||
| rtc.c | ||
| runstate-action.c | ||
| runstate-hmp-cmds.c | ||
| runstate.c | ||
| tpm-hmp-cmds.c | ||
| tpm.c | ||
| trace-events | ||
| trace.h | ||
| vl.c | ||
| watchpoint.c | ||