From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Fix build errors by selecting DM_BUFIO. Fix Kconfig entry formatting by using tabs instead of spaces, using "help" instead of "---help---", and indenting help text with one additional space. Fixes these build errors: ld: drivers/md/dm-ebs-target.o: in function `__ebs_forget_bio': dm-ebs-target.c:(.text+0x1bc): undefined reference to `dm_bufio_forget' ld: drivers/md/dm-ebs-target.o: in function `ebs_dtr': dm-ebs-target.c:(.text+0x2fe): undefined reference to `dm_bufio_client_destroy' ld: drivers/md/dm-ebs-target.o: in function `__ebs_rw_bio': dm-ebs-target.c:(.text+0x4c4): undefined reference to `dm_bufio_get_block_size' ld: dm-ebs-target.c:(.text+0x4f1): undefined reference to `dm_bufio_read' ld: dm-ebs-target.c:(.text+0x504): undefined reference to `dm_bufio_get_block_size' ld: dm-ebs-target.c:(.text+0x519): undefined reference to `dm_bufio_new' ld: dm-ebs-target.c:(.text+0x567): undefined reference to `dm_bufio_mark_partial_buffer_dirty' ld: dm-ebs-target.c:(.text+0x56f): undefined reference to `dm_bufio_release' ld: drivers/md/dm-ebs-target.o: in function `__ebs_process_bios': dm-ebs-target.c:(.text+0x6bf): undefined reference to `dm_bufio_prefetch' ld: dm-ebs-target.c:(.text+0x72d): undefined reference to `dm_bufio_prefetch' ld: dm-ebs-target.c:(.text+0x783): undefined reference to `dm_bufio_prefetch' ld: dm-ebs-target.c:(.text+0x7fe): undefined reference to `dm_bufio_write_dirty_buffers' ld: drivers/md/dm-ebs-target.o: in function `ebs_ctr': dm-ebs-target.c:(.text+0xa82): undefined reference to `dm_bufio_client_create' Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Heinz Mauelshagen <dm-devel@xxxxxxxxxx> Cc: Alasdair Kergon <agk@xxxxxxxxxx> Cc: Mike Snitzer <snitzer@xxxxxxxxxx> Cc: dm-devel@xxxxxxxxxx --- drivers/md/Kconfig | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) --- linux-next-20200428.orig/drivers/md/Kconfig +++ linux-next-20200428/drivers/md/Kconfig @@ -338,12 +338,12 @@ config DM_WRITECACHE to be cached in standard RAM. config DM_EBS - tristate "Emulated block size target (EXPERIMENTAL)" - depends on BLK_DEV_DM - default n - ---help--- - dm-ebs emulates smaller logical block size on backing devices - with larger ones (e.g. 512 byte sectors on 4K native disks). + tristate "Emulated block size target (EXPERIMENTAL)" + depends on BLK_DEV_DM + select DM_BUFIO + help + dm-ebs emulates smaller logical block size on backing devices + with larger ones (e.g. 512 byte sectors on 4K native disks). config DM_ERA tristate "Era target (EXPERIMENTAL)" -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel