src-test2/sys/vm/vnode_pager.c, branch release/2.0.5_cvsFreeBSD source treehttps://cgit-dev.freebsd.org/src-test2/atom?h=release%2F2.0.5_cvs1995-06-10T19:44:55ZThis commit was manufactured by cvs2svn to create tag1995-06-10T19:44:55Zcvs2svncvs2svn@FreeBSD.org1995-06-10T19:44:55Zurn:sha1:fbe312c9f723b704a542825383058d1a2eb63f94
'RELENG_2_0_5_RELEASE'.
This commit was manufactured to restore the state of the 2.0.5-RELEASE image.
Releases prior to 5.3-RELEASE are omitting the secure/ and crypto/ subdirs.
Remove trailing whitespace.1995-05-30T08:16:23ZRodney W. Grimesrgrimes@FreeBSD.org1995-05-30T08:16:23Zurn:sha1:9b2e535452929d6f2f798a2c01b23b1f547a0b0fAccessing pages beyond the end of a mapped file results in internal1995-05-18T02:59:26ZDavid Greenmandg@FreeBSD.org1995-05-18T02:59:26Zurn:sha1:5f55e84104f9f6b6fb1a561b34778a59072ecf78
inconsistencies in the VM system that eventually lead to a panic. These
changes fix the behavior to conform to the behavior in SunOS, which is
to deny faults to pages beyond the EOF (returning SIGBUS). Internally,
this is implemented by requiring faults to be within the object size
boundaries. These changes exposed another bug, namely that passing in
an offset to mmap when trying to map an unnamed anonymous region also
results in internal inconsistencies. In this case, the offset is forced
to zero.
Reviewed by: John Dyson and others
Changed "handle" from type caddr_t to void *; "handle" is several different1995-05-10T18:56:09ZDavid Greenmandg@FreeBSD.org1995-05-10T18:56:09Zurn:sha1:ee3a64c9927bb5adb2ad7560b46b296c0faeb358
types of pointers, and "char *" is a bad choice for the type.
Changes from John Dyson and myself:1995-04-09T06:03:56ZDavid Greenmandg@FreeBSD.org1995-04-09T06:03:56Zurn:sha1:f6b04d2bfb2ed3e60f75c7d34fb4d212723d8821
Fixed remaining known bugs in the buffer IO and VM system.
vfs_bio.c:
Fixed some race conditions and locking bugs. Improved performance
by removing some (now) unnecessary code and fixing some broken
logic.
Fixed process accounting of # of FS outputs.
Properly handle NFS interrupts (B_EINTR).
(various)
Replaced calls to clrbuf() with calls to an optimized routine
called vfs_bio_clrbuf().
(various FS sync)
Sync out modified vnode_pager backed pages.
ffs_vnops.c:
Do two passes: Sync out file data first, then indirect blocks.
vm_fault.c:
Fixed deadly embrace caused by acquiring locks in the wrong order.
vnode_pager.c:
Changed to use buffer I/O system for writing out modified pages. This
should fix the problem with the modification date previous not getting
updated. Also dramatically simplifies the code. Note that this is
going to change in the future and be implemented via VOP_PUTPAGES().
vm_object.c:
Fixed a pile of bugs related to cleaning (vnode) objects. The performance
of vm_object_page_clean() is terrible when dealing with huge objects,
but this will change when we implement a binary tree to keep the object
pages sorted.
vm_pageout.c:
Fixed broken clustering of pageouts. Fixed race conditions and other
lockup style bugs in the scanning of pages. Improved performance.
Removed unused variable declaration missed in previous commit.1995-03-21T23:09:53ZDavid Greenmandg@FreeBSD.org1995-03-21T23:09:53Zurn:sha1:1b369d9858448008d106ad9d21b658af9608c41aRemoved do-nothing VOP_UPDATE() call.1995-03-21T23:07:19ZDavid Greenmandg@FreeBSD.org1995-03-21T23:07:19Zurn:sha1:71263bf8db6104cc3235d60751d3003689b76958Added a new boolean argument to vm_object_page_clean that causes it to1995-03-21T01:11:44ZDavid Greenmandg@FreeBSD.org1995-03-21T01:11:44Zurn:sha1:7c1f6cedec8672909824f4f1174ae099f739d2ec
only toss out clean pages if TRUE.
Don't gain/lose an object reference in vnode_pager_setsize(). It will1995-03-20T10:20:42ZDavid Greenmandg@FreeBSD.org1995-03-20T10:20:42Zurn:sha1:0426122fa0efb1d4aae345a7fced7a93036bdd91
cause vnode locking problems in vm_object_terminate().
Implement proper vnode locking in vm_object_terminate().
Do proper vnode locking when doing paging I/O. Removed the asynchronous1995-03-19T23:46:25ZDavid Greenmandg@FreeBSD.org1995-03-19T23:46:25Zurn:sha1:0bdb7528db8029f7497f969ac102333716e548fb
paging capability to facilitate this (we saw little or no measureable
improvement with this anyway).
Submitted by: John Dyson