ext4: remove dead GET_BLOCKS_ZERO code

There's no call to ext4_map_blocks() in the current ext4 code with a
flags argument that combines EXT4_GET_BLOCKS_CONVERT and
EXT4_GET_BLOCKS_ZERO.  Remove the code that corresponds to this case
from ext4_ext_handle_unwritten_extents().

Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/20200430185320.23001-2-enwlinux@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 6befdec..728f4a6 100644 (file)
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3829,14 +3829,6 @@ ext4_ext_handle_unwritten_extents(handle_t *handle, struct inode *inode,
        }
        /* IO end_io complete, convert the filled extent to written */
        if (flags & EXT4_GET_BLOCKS_CONVERT) {
-               if (flags & EXT4_GET_BLOCKS_ZERO) {
-                       if (allocated > map->m_len)
-                               allocated = map->m_len;
-                       err = ext4_issue_zeroout(inode, map->m_lblk, newblock,
-                                                allocated);
-                       if (err < 0)
-                               goto out2;
-               }
                ret = ext4_convert_unwritten_extents_endio(handle, inode, map,
                                                           ppath);
                if (ret >= 0)