fs/reiserfs: atomically read inode size

See i_size_read() comments in include/linux/fs.h

Link: http://lkml.kernel.org/r/20170123174701.30394-1-fabf@skynet.be
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index e314cb30a181e1017f7df769f7faf1bef89bdef1..feabcde0290d27103a11813682091abd1a191661 100644 (file)
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1166,7 +1166,7 @@ static int reiserfs_parse_options(struct super_block *s,
                        if (!strcmp(arg, "auto")) {
                                /* From JFS code, to auto-get the size. */
                                *blocks =
-                                   s->s_bdev->bd_inode->i_size >> s->
+                                   i_size_read(s->s_bdev->bd_inode) >> s->
                                    s_blocksize_bits;
                        } else {
                                *blocks = simple_strtoul(arg, &p, 0);