Date: Sat, 30 Nov 1996 14:41:51 -0800 (PST) From: John Dyson <dyson> To: CVS-committers, cvs-all, cvs-sys Subject: cvs commit: src/sys/sys buf.h param.h src/sys/vm vm_fault.c vm_map.c vm_map.h vm_pager.c src/sys/kern vfs_bio.c vfs_cluster.c Message-ID: <199611302241.OAA10690@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
dyson 96/11/30 14:41:50
Modified: sys/sys buf.h param.h
sys/kern vfs_bio.c vfs_cluster.c
sys/vm vm_fault.c vm_map.c vm_map.h vm_pager.c
Log:
Implement a new totally dynamic (up to MAXPHYS) buffer kva allocation
scheme. Additionally, add the capability for checking for unexpected
kernel page faults. The maximum amount of kva space for buffers hasn't
been decreased from where it is, but it will now be possible to do so.
This scheme manages the kva space similar to the buffers themselves. If
there isn't enough kva space because of usage or fragementation, buffers
will be reclaimed until a buffer allocation is successful. This scheme
should be very resistant to fragmentation problems until/if the LFS code
is fixed and uses the bogus buffer locking scheme -- but a 'fixed' LFS
is not likely to use such a scheme.
Now there should be NO problem allocating buffers up to MAXPHYS.
Revision Changes Path
1.35 +3 -1 src/sys/sys/buf.h
1.17 +3 -6 src/sys/sys/param.h
1.107 +80 -20 src/sys/kern/vfs_bio.c
1.39 +9 -1 src/sys/kern/vfs_cluster.c
1.58 +7 -8 src/sys/vm/vm_fault.c
1.58 +6 -1 src/sys/vm/vm_map.c
1.16 +4 -3 src/sys/vm/vm_map.h
1.25 +20 -13 src/sys/vm/vm_pager.c
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199611302241.OAA10690>