Module Name:    src
Committed By:   mlelstv
Date:           Wed Aug  9 16:44:40 UTC 2017

Modified Files:
        src/sys/dev: ld.c ldvar.h
        src/sys/dev/i2o: ld_iop.c
        src/sys/dev/ic: ld_cac.c ld_nvme.c
        src/sys/dev/pci: ld_virtio.c
        src/sys/dev/sdmmc: ld_sdmmc.c

Log Message:
While ld(4) is MP safe, many backends are not.

Add a flag for backends that are MP safe. Take KERNEL_LOCK when calling
into a backend that doesn't have the flag set. Do the same for the
discard routine.

Fixes PR 52462.

To generate a diff of this commit:
cvs rdiff -u -r1.101 -r1.102 src/sys/dev/ld.c
cvs rdiff -u -r1.30 -r1.31 src/sys/dev/ldvar.h
cvs rdiff -u -r1.38 -r1.39 src/sys/dev/i2o/ld_iop.c
cvs rdiff -u -r1.30 -r1.31 src/sys/dev/ic/ld_cac.c
cvs rdiff -u -r1.16 -r1.17 src/sys/dev/ic/ld_nvme.c
cvs rdiff -u -r1.15 -r1.16 src/sys/dev/pci/ld_virtio.c
cvs rdiff -u -r1.31 -r1.32 src/sys/dev/sdmmc/ld_sdmmc.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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