[PATCH 09/12 v2] ext4: remove unused code from ext4_remove_blocks()

[Lukas Czerner <lczerner@redhat.com>]

The "head removal" branch in the condition is never used in any code
path in ext4 since the function only caller ext4_ext_rm_leaf() will make
sure that the extent is properly split before removing blocks. Note that
there is a bug in this branch anyway.

This commit removes the unused code completely and makes use of
ext4_error() instead of printk if dubious range is provided.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
---
 fs/ext4/extents.c |   21 ++++-----------------
 1 files changed, 4 insertions(+), 17 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index b3300eb..455257f 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2339,23 +2339,10 @@ static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
 			*partial_cluster = EXT4_B2C(sbi, pblk);
 		else
 			*partial_cluster = 0;
-	} else if (from == le32_to_cpu(ex->ee_block)
-		   && to <= le32_to_cpu(ex->ee_block) + ee_len - 1) {
-		/* head removal */
-		ext4_lblk_t num;
-		ext4_fsblk_t start;
-
-		num = to - from;
-		start = ext4_ext_pblock(ex);
-
-		ext_debug("free first %u blocks starting %llu\n", num, start);
-		ext4_free_blocks(handle, inode, NULL, start, num, flags);