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

Signed-off-by: Fabian Frederick <f...@skynet.be>
---
 fs/ext4/super.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 9d15a62..3746f77 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3798,7 +3798,8 @@ static int ext4_fill_super(struct super_block *sb, void 
*data, int silent)
                goto cantfind_ext4;
 
        /* check blocks count against device size */
-       blocks_count = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
+       blocks_count = i_size_read(sb->s_bdev->bd_inode) >>
+                      sb->s_blocksize_bits;
        if (blocks_count && ext4_blocks_count(es) > blocks_count) {
                ext4_msg(sb, KERN_WARNING, "bad geometry: block count %llu "
                       "exceeds size of device (%llu blocks)",
-- 
2.9.3

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