FreeBSD/src cf69fe6 (r355754)sys/amd64/linux linux_dummy.c, sys/amd64/linux32 linux32_dummy.c

Add sync_file_range(2) implementation to linux(4); it's a thin wrapper
over the usual fsync(2).

This silences some warnings when running "apt-get upgrade".

Reviewed by:    brooks, emaste
MFC after:      2 weeks
Sponsored by:   The FreeBSD Foundation
Differential Revision:  https://reviews.freebsd.org/D22371
DeltaFile
+16-0sys/compat/linux/linux_file.c
+7-0sys/compat/linux/linux_file.h
+0-1sys/amd64/linux/linux_dummy.c
+0-1sys/amd64/linux32/linux32_dummy.c
+0-1sys/arm64/linux/linux_dummy.c
+0-1sys/i386/linux/linux_dummy.c
+23-46 files

UnifiedSplitRaw