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udf: Use i_size_read() in udf_adinicb_writepage()

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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>
This commit is contained in:
Jan Kara 2017-06-13 16:08:52 +02:00
parent 9795e0e8ac
commit 146c4ad6ec
1 changed files with 2 additions and 1 deletions
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3
fs/udf/file.c
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@ -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);