[Android Q&A, Help & Troubleshooting] ACiD GRiM:
Here's the hierarchy of dm-5 in the sysfs:

ls -R /sys/devices/virtual/block/dm-5

/sys/devices/virtual/block/dm-5:
alignment_offset
bdi
capability
dev
discard_alignment
dm
ext_range
holders
inflight
power
queue
range
removable
ro
size
slaves
stat
subsystem
uevent

/sys/devices/virtual/block/dm-5/dm:
name
suspended
uuid

/sys/devices/virtual/block/dm-5/holders:

/sys/devices/virtual/block/dm-5/power:
autosuspend_delay_ms
control
runtime_active_time
runtime_status
runtime_suspended_time

/sys/devices/virtual/block/dm-5/queue:
add_random
discard_granularity
discard_max_bytes
discard_zeroes_data
hw_sector_size
iostats
logical_block_size
max_hw_sectors_kb
max_integrity_segments
max_sectors_kb
max_segment_size
max_segments
minimum_io_size
nomerges
nr_requests
optimal_io_size
physical_block_size
read_ahead_kb
rotational
rq_affinity
scheduler

/sys/devices/virtual/block/dm-5/slaves:
mmcblk1

And here's the stock mmc settings

ls -R /sys//devices/platform/msm_sdcc.3/mmc_host/

/sys//devices/platform/msm_sdcc.3/mmc_host/:
mmc1

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1:
clkgate_delay
device
mmc1:0007
power
subsystem
uevent

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007:
block
cid
csd
date
driver
erase_size
fwrev
hwrev
manfid
name
oemid
power
preferred_erase_size
scr
serial
subsystem
type
uevent

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block:
mmcblk1

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1:
alignment_offset
bdi
capability
dev
device
discard_alignment
ext_range
force_ro
holders
inflight
mmcblk1p1
power
queue
range
removable
ro
size
slaves
stat
subsystem
uevent

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1/holders:
dm-5

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1/mmcblk1p1:
alignment_offset
dev
discard_alignment
holders
inflight
partition
power
ro
size
start
stat
subsystem
uevent

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1/mmcblk1p1/holders:

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1/mmcblk1p1/power:
autosuspend_delay_ms
control
runtime_active_time
runtime_status
runtime_suspended_time

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1/power:
autosuspend_delay_ms
control
runtime_active_time
runtime_status
runtime_suspended_time

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1/queue:
add_random
discard_granularity
discard_max_bytes
discard_zeroes_data
hw_sector_size
iosched
iostats
logical_block_size
max_hw_sectors_kb
max_integrity_segments
max_sectors_kb
max_segment_size
max_segments
minimum_io_size
nomerges
nr_requests
optimal_io_size
physical_block_size
read_ahead_kb
rotational
rq_affinity
scheduler

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1/queue/iosched:
fifo_batch
front_merges
read_expire
write_expire
writes_starved

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/block/mmcblk1/slaves:

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/mmc1:0007/power:
autosuspend_delay_ms
control
runtime_active_time
runtime_status
runtime_suspended_time

/sys//devices/platform/msm_sdcc.3/mmc_host//mmc1/power:
autosuspend_delay_ms
control
runtime_active_time
runtime_status
runtime_suspended_time