linux-next: build warning after merge of the f2fs tree

From: Stephen Rothwell
Date: Thu Feb 09 2017 - 18:51:42 EST

Hi Jaegeuk,

After merging the f2fs tree, today's linux-next build
(x86_64_allmodconfig) produced this warning:

fs/f2fs/node.c: In function 'fsync_node_pages':
fs/f2fs/node.c:1520:3: warning: 'last_idx' may be used uninitialized in this function [-Wmaybe-uninitialized]
f2fs_submit_merged_bio_cond(sbi, NULL, ino, last_idx,

Introduced by commit

9563642a6ec2 ("f2fs: check last page index in cached bio to decide submission")

Stephen Rothwell