Commit 62b62ad8 authored Jun 08, 2012 by Boaz Harrosh

ore: Remove support of partial IO request (NFS crash)



Do to OOM situations the ore might fail to allocate all resources
needed for IO of the full request. If some progress was possible
it would proceed with a partial/short request, for the sake of
forward progress.

Since this crashes NFS-core and exofs is just fine without it just
remove this contraption, and fail.

TODO:
	Support real forward progress with some reserved allocations
	of resources, such as mem pools and/or bio_sets

[Bug since 3.2 Kernel]
CC: Stable Tree <stable@kernel.org>
CC: Benny Halevy <bhalevy@tonian.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>

parent 9ff19309

fs/exofs/ore.c

+1 −7

Original line number	Diff line number	Diff line
		@@ -735,13 +735,7 @@ static int _prepare_for_striping(struct ore_io_state *ios)
		out:
		ios->numdevs = devs_in_group;
		ios->pages_consumed = cur_pg;
		if (unlikely(ret)) {
		if (length == ios->length)
		return ret;
		else
		ios->length -= length;
		}
		return 0;
		}

		int ore_create(struct ore_io_state *ios)