Date: Thu, 29 Oct 2009 15:09:54 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern kern_conf.c src/sys/sys conf.h types.h src/sys/vm device_pager.c vm.h Message-ID: <200910291510.n9TFAxUv093554@repoman.freebsd.org>
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jhb 2009-10-29 15:09:54 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_8)
sys/kern kern_conf.c
sys/sys conf.h types.h
sys/vm device_pager.c vm.h
Log:
SVN rev 198594 on 2009-10-29 15:09:54Z by jhb
MFC 196615:
Extend the device pager to support different memory attributes on different
pages in an object.
- Add a new variant of d_mmap() currently called d_mmap2() which accepts
an additional in/out parameter that is the memory attribute to use for
the requested page.
- A driver either uses d_mmap() or d_mmap2() for all requests but not both.
The current implementation uses a flag in the cdevsw (D_MMAP2) to indicate
that the driver provides a d_mmap2() handler instead of d_mmap(). This
is done to make the change ABI compatible with existing drivers and
MFC'able to 7 and 8.
Revision Changes Path
1.231.2.2 +10 -4 src/sys/kern/kern_conf.c
1.251.2.2 +9 -1 src/sys/sys/conf.h
1.102.2.2 +1 -0 src/sys/sys/types.h
1.91.2.2 +15 -5 src/sys/vm/device_pager.c
1.32.2.2 +6 -6 src/sys/vm/vm.h
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