Date: Fri, 28 Aug 2009 14:06:55 +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: <200908281407.n7SE7ccq016392@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
jhb 2009-08-28 14:06:55 UTC
FreeBSD src repository
Modified files:
sys/kern kern_conf.c
sys/sys conf.h types.h
sys/vm device_pager.c vm.h
Log:
SVN rev 196615 on 2009-08-28 14:06:55Z by jhb
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.
Submitted by: alc
MFC after: 1 month
Revision Changes Path
1.232 +10 -4 src/sys/kern/kern_conf.c
1.252 +9 -1 src/sys/sys/conf.h
1.103 +1 -0 src/sys/sys/types.h
1.92 +15 -5 src/sys/vm/device_pager.c
1.33 +6 -6 src/sys/vm/vm.h
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200908281407.n7SE7ccq016392>