udf: Use i_size_read() in udf_adinicb_writepage()

We don't hold inode_lock in udf_adinicb_writepage() so use i_size_read()
to get i_size. This cannot cause real problems is i_size is guaranteed
to be small but let's be careful.

Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/udf/file.c b/fs/udf/file.c
index e06d2c15749a..356c2bf148a5 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -76,7 +76,8 @@ static int udf_adinicb_writepage(struct page *page,
         BUG_ON(!PageLocked(page));
 
         kaddr = kmap_atomic(page);
-        memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr, inode->i_size);
+        memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr,
+                i_size_read(inode));
         SetPageUptodate(page);
         kunmap_atomic(kaddr);
         mark_inode_dirty(inode);