On Sun, 6 Jan 2013, Jason Liu wrote: > when run the folloing command under shell, it will return error > sh/$ echo 1 > /proc/sys/vm/compact_memory > sh/$ sh: write error: Bad address > > After strace, I found the following log: > ... > write(1, "1\n", 2) = 3 > write(1, "", 4294967295) = -1 EFAULT (Bad address) > write(2, "echo: write error: Bad address\n", 31echo: write error: Bad address > ) = 31 > > This tells system return 3(COMPACT_COMPLETE) after write data to > compact_memory. > > The fix is to make the system just return 0 instead 3(COMPACT_COMPLETE) from > sysctl_compaction_handler after compaction_nodes finished. > > Suggested-by:David Rientjes <rient...@google.com> > Cc:Mel Gorman <mgor...@suse.de> > Cc:Andrew Morton <a...@linux-foundation.org> > Cc:Rik van Riel <r...@redhat.com> > Cc:Minchan Kim <minc...@kernel.org> > Cc:KAMEZAWA Hiroyuki <kamezawa.hir...@jp.fujitsu.com> > Signed-off-by: Jason Liu <r64...@freescale.com>
Acked-by: David Rientjes <rient...@google.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
