XFS_ICOWBLOCKS
ASSERT((iflag & ~(XFS_IEOFBLOCKS | XFS_ICOWBLOCKS)) == 0);
ASSERT((iflag & ~(XFS_IEOFBLOCKS | XFS_ICOWBLOCKS)) == 0);
clear_tag = (ip->i_flags & (XFS_IEOFBLOCKS | XFS_ICOWBLOCKS)) == 0;
if (!xfs_iflags_test(ip, XFS_ICOWBLOCKS))
return xfs_blockgc_set_iflag(ip, XFS_ICOWBLOCKS);
return xfs_blockgc_clear_iflag(ip, XFS_ICOWBLOCKS);