md/raid5: separate large if clause out of fetch_block().
authorNeilBrown <neilb@suse.de>
Mon, 2 Feb 2015 00:32:23 +0000 (11:32 +1100)
committerNeilBrown <neilb@suse.de>
Tue, 3 Feb 2015 21:35:51 +0000 (08:35 +1100)
fetch_block() has a very large and hard to read 'if' condition.

Separate it into its own function so that it can be
made more readable.

Signed-off-by: NeilBrown <neilb@suse.de>
drivers/md/raid5.c

Simple merge