hfsplus: atomically read inode size

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

Link: http://lkml.kernel.org/r/20170123175338.3840-1-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>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index ebb85e5f6549..e254fa0f0697 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -132,7 +132,7 @@ static int hfsplus_get_last_session(struct super_block *sb,
 
         /* default values */
         *start = 0;
-        *size = sb->s_bdev->bd_inode->i_size >> 9;
+        *size = i_size_read(sb->s_bdev->bd_inode) >> 9;
 
         if (HFSPLUS_SB(sb)->session >= 0) {
                 te.cdte_track = HFSPLUS_SB(sb)->session;