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PR/52462 CVS commit: [netbsd-8] src/sys/dev

The following reply was made to PR kern/52462; it has been noted by GNATS.

From: "Martin Husemann" <>
Subject: PR/52462 CVS commit: [netbsd-8] src/sys/dev
Date: Fri, 1 Sep 2017 09:59:11 +0000

 Module Name:	src
 Committed By:	martin
 Date:		Fri Sep  1 09:59:11 UTC 2017
 Modified Files:
 	src/sys/dev [netbsd-8]: dksubr.c ld.c ldvar.h
 	src/sys/dev/i2o [netbsd-8]: ld_iop.c
 	src/sys/dev/ic [netbsd-8]: ld_cac.c ld_nvme.c
 	src/sys/dev/pci [netbsd-8]: ld_virtio.c
 	src/sys/dev/sdmmc [netbsd-8]: ld_sdmmc.c sdmmc_mem.c sdmmcvar.h
 Log Message:
 Pull up following revision(s) (requested by mlelstv in ticket #261):
 	sys/dev/sdmmc/ld_sdmmc.c: revision 1.32
 	sys/dev/sdmmc/ld_sdmmc.c: revision 1.33
 	sys/dev/sdmmc/ld_sdmmc.c: revision 1.34
 	sys/dev/sdmmc/sdmmc_mem.c: revision 1.62
 	sys/dev/i2o/ld_iop.c: revision 1.39
 	sys/dev/ld.c: revision 1.102
 	sys/dev/ld.c: revision 1.103
 	sys/dev/dksubr.c: revision 1.98
 	sys/dev/dksubr.c: revision 1.99
 	sys/dev/sdmmc/sdmmcvar.h: revision 1.29
 	sys/dev/ic/ld_nvme.c: revision 1.17
 	sys/dev/ldvar.h: revision 1.31
 	sys/dev/ldvar.h: revision 1.32
 	sys/dev/ic/ld_cac.c: revision 1.31
 	sys/dev/pci/ld_virtio.c: revision 1.16
 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.
 Defer sdmmc discard operations to the sdmmc task queue. Fixes a panic
 introduced by ld.c r1.102.
 validate length for discard operation and split operation when byte length
 doesn't fit into 'int'.
 make the sc_discard interface for the ld backend asynchronous and
 signal completion through new callback lddiscardend. Use a standard
 struct buf to pass disk address and range instead of two off_t values.
 make lddiscard synchronous again. This is a requirement of the current
 ffs discard code.
 Initialize error also in the case where len=0, which just succeeds.
 while here, assert that the len is indeed non-negative. this is already
 confirmed by sys_fdiscard, but let's be sure.
 reported by: GCC, but with different compile flags
 To generate a diff of this commit:
 cvs rdiff -u -r1.97 -r1.97.2.1 src/sys/dev/dksubr.c
 cvs rdiff -u -r1.101 -r1.101.2.1 src/sys/dev/ld.c
 cvs rdiff -u -r1.30 -r1.30.2.1 src/sys/dev/ldvar.h
 cvs rdiff -u -r1.37 -r1.37.6.1 src/sys/dev/i2o/ld_iop.c
 cvs rdiff -u -r1.30 -r1.30.8.1 src/sys/dev/ic/ld_cac.c
 cvs rdiff -u -r1.16 -r1.16.2.1 src/sys/dev/ic/ld_nvme.c
 cvs rdiff -u -r1.15 -r1.15.6.1 src/sys/dev/pci/ld_virtio.c
 cvs rdiff -u -r1.26.4.4 -r1.26.4.5 src/sys/dev/sdmmc/ld_sdmmc.c
 cvs rdiff -u -r1.56.4.3 -r1.56.4.4 src/sys/dev/sdmmc/sdmmc_mem.c
 cvs rdiff -u -r1.23.6.3 -r1.23.6.4 src/sys/dev/sdmmc/sdmmcvar.h
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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