2.6.31-stable review patch. If anyone has any objections, please let us know. ------------------ (cherry picked from commit daea696dbac0e33af3cfe304efbfb8d74e0effe6) The ext4_move_extents() functions checks with BUG_ON() whether the exchanged blocks count accords with request blocks count. But, if the target range (orig_start + len) includes sparse block(s), 'moved_len' (exchanged blocks count) does not agree with 'len' (request blocks count), since sparse block is not counted in 'moved_len'. This causes us to hit the BUG_ON(), even though the function succeeded. Signed-off-by: Akira Fujita Signed-off-by: "Theodore Ts'o" Signed-off-by: Greg Kroah-Hartman --- fs/ext4/move_extent.c | 3 --- 1 file changed, 3 deletions(-) --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -1322,8 +1322,5 @@ out2: if (ret) return ret; - /* All of the specified blocks must be exchanged in succeed */ - BUG_ON(*moved_len != len); - return 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/