[One (M7) Original Android Development] elherr:
On your kernel and am still seeing repeated mmc0 start_bkops.

[ 3376.320007] mmc0: mmc_start_bkops: raw_bkops_status=0x1, from_exception=0
[ 3376.325927] mmc0: mmc_start_bkops: Starting bkops
[ 3377.269988] mmc0: mmc_start_bkops: raw_bkops_status=0x1, from_exception=0
[ 3377.275817] mmc0: mmc_start_bkops: Starting bkops
[ 3382.595214] mmc0: mmc_start_bkops: raw_bkops_status=0x2, from_exception=0
[ 3382.601013] mmc0: mmc_start_bkops: Starting bkops

Rebooted and show filesystems not unmounted cleanly.

root@m7:/ # dmesg | grep -i mmc
[ 7.074310] mmc0: SDCC Version: 0x06000018
[ 7.079345] mmc0: bam physical base=0x12402000
[ 7.082763] mmc0: bam virtual base=0xf0338000
[ 7.091278] mmc0: BAM device registered. bam_handle=0xee89e800
[ 7.103393] mmc0: Qualcomm MSM SDCC-BAM at 0x0000000012402000 irq 130
[ 7.109863] mmc0: Qualcomm MSM SDCC-DML at 0x0000000012400800
[ 7.115631] mmc0: No card detect facilities available
[ 7.122375] mmc0: Qualcomm MSM SDCC-core at 0x0000000012400000 irq 136,0 dma -1 dmacrcri -1
[ 7.129821] mmc0: Controller capabilities: 0x0000019a
[ 7.134796] mmc0: 8 bit data mode enabled
[ 7.138763] mmc0: 4 bit data mode disabled
[ 7.142852] mmc0: polling status mode disabled
[ 7.147308] mmc0: MMC clock 400000 -> 96000000 Hz, PCLK 0 Hz
[ 7.152954] mmc0: Slot eject status = 0
[ 7.156829] mmc0: Power save feature enable = 1
[ 7.161254] mmc0: SPS-BAM data transfer mode available
[ 7.166442] mmc1: SDCC Version: 0x06000018
[ 7.170440] mmc1: bam physical base=0x12182000
[ 7.174865] mmc1: bam virtual base=0xf0394000
[ 7.183349] mmc1: BAM device registered. bam_handle=0xee89ee00
[ 7.204711] mmc1: Qualcomm MSM SDCC-BAM at 0x0000000012182000 irq 128
[ 7.210327] mmc1: Qualcomm MSM SDCC-DML at 0x0000000012180800
[ 7.226531] mmc1: Qualcomm MSM SDCC-core at 0x0000000012180000 irq 134,0 dma -1 dmacrcri -1
[ 7.238891] mmc1: Controller capabilities: 0x0000019a
[ 7.247955] mmc1: 8 bit data mode disabled
[ 7.256103] mmc1: 4 bit data mode enabled
[ 7.264129] mmc1: polling status mode disabled
[ 7.272552] mmc1: MMC clock 400000 -> 192000000 Hz, PCLK 0 Hz
[ 7.282318] mmc1: Slot eject status = 1
[ 7.290222] mmc1: Power save feature enable = 1
[ 7.293762] mmc1: SPS-BAM data transfer mode available
[ 7.367462] mmc0: new high speed DDR MMC card at address 0001
[ 7.787872] mmcblk0: mmc0:0001 MCG8GA 58.2 GiB
[ 7.882019] mmcblk0: p1 p2 p3 p4 < p5 p6 p7 p8 p9 p10 p11 p12 p13 p14 p15 p16 p17 p18 p19 p20 p21 p22 p23 p24 p25 p26 p27 p28 p29 p30 p31 p32 p33 p34 p35 p36 p37 >
[ 8.150115] mmc1: Slot status change detected (0 -> 1)
[ 8.240112] mmc1: queuing unknown CIS tuple 0x91 (3 bytes)
[ 8.244812] mmc1: new ultra high speed SDR104 SDIO card at address 0001
[ 11.570007] EXT4-fs (mmcblk0p35): mounted filesystem with ordered data mode. Opts: barrier=1
[ 11.577453] SELinux: initialized (dev mmcblk0p35, type ext4), uses xattr
[ 11.600860] EXT4-fs (mmcblk0p36): ext4_orphan_cleanup: deleting unreferenced inode 25
[ 11.608123] EXT4-fs (mmcblk0p36): ext4_orphan_cleanup: deleting unreferenced inode 24
[ 11.615539] EXT4-fs (mmcblk0p36): ext4_orphan_cleanup: deleting unreferenced inode 12
[ 11.623291] EXT4-fs (mmcblk0p36): 3 orphan inodes deleted
[ 11.628662] EXT4-fs (mmcblk0p36): recovery complete
[ 11.647857] EXT4-fs (mmcblk0p36): mounted filesystem with ordered data mode. Opts: nomblk_io_submit,errors=remount-ro
[ 11.657470] SELinux: initialized (dev mmcblk0p36, type ext4), uses xattr
[ 11.795959] EXT4-fs (mmcblk0p36): mounted filesystem with ordered data mode. Opts: barrier=1
[ 11.803344] SELinux: initialized (dev mmcblk0p36, type ext4), uses xattr
[ 11.834289] EXT4-fs (mmcblk0p37): ext4_orphan_cleanup: deleting unreferenced inode 1974312
[ 11.841583] EXT4-fs (mmcblk0p37): ext4_orphan_cleanup: deleting unreferenced inode 1974275
[ 11.850341] EXT4-fs (mmcblk0p37): ext4_orphan_cleanup: deleting unreferenced inode 1974292
[ 11.861511] EXT4-fs (mmcblk0p37): ext4_orphan_cleanup: deleting unreferenced inode 1354291
[ 11.869262] EXT4-fs (mmcblk0p37): ext4_orphan_cleanup: deleting unreferenced inode 1354286
[ 11.881713] EXT4-fs (mmcblk0p37): ext4_orphan_cleanup: deleting unreferenced inode 1499817
[ 11.892578] EXT4-fs (mmcblk0p37): ext4_orphan_cleanup: deleting unreferenced inode 1331482
[ 11.902404] EXT4-fs (mmcblk0p37): ext4_orphan_cleanup: deleting unreferenced inode 1330277
[ 11.910064] EXT4-fs (mmcblk0p37): 8 orphan inodes deleted
[ 11.915039] EXT4-fs (mmcblk0p37): recovery complete
[ 11.956817] mmc0: mmc_start_bkops: raw_bkops_status=0x1, from_exception=1
[ 11.994049] EXT4-fs (mmcblk0p37): mounted filesystem with ordered data mode. Opts: nomblk_io_submit,errors=remount-ro
[ 12.003662] SELinux: initialized (dev mmcblk0p37, type ext4), uses xattr
[ 12.131134] EXT4-fs (mmcblk0p37): mounted filesystem with ordered data mode. Opts: noauto_da_alloc,barrier=1
[ 12.139953] SELinux: initialized (dev mmcblk0p37, type ext4), uses xattr
[ 12.155426] SELinux: initialized (dev mmcblk0p31, type vfat), uses genfs_contexts
[ 12.170532] SELinux: initialized (dev mmcblk0p16, type vfat), uses genfs_contexts

It does not look like that MMC patch makes any difference. No change from standard kernel.

Edit: One hour after reboot and do not have any start_bkops messages. Wish I knew what causes it to start.