FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F2.0.5_cvs 1995-06-10T19:44:55Z 1995-06-10T19:44:55Z cvs2svn cvs2svn@FreeBSD.org 1995-06-10T19:44:55Z urn: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. 1995-06-04T13:53:25Z David Greenman dg@FreeBSD.org 1995-06-04T13:53:25Z urn:sha1:5898dfb90af42e16aee7290b0e20db041be14cb2 happend while the file vnode was locked by another process. This happens because the call to vget() wasn't checked for failure so the clean operation would happen without the lock and then the corresponding vput() would release the lock it didn't have and give up a vnode reference it didn't have (which could result in an in-use vnode being freed). The problem would only be seen during an msync() of the mapped file or when the file fell off the object cache (although this latter case is unlikely because the file's object would have to be OBJ_WRITEABLE, and thus shouldn't be on the object cache list). Reviewed by: John Dyson 1995-05-30T08:16:23Z Rodney W. Grimes rgrimes@FreeBSD.org 1995-05-30T08:16:23Z urn:sha1:9b2e535452929d6f2f798a2c01b23b1f547a0b0f 1995-05-21T21:39:31Z David Greenman dg@FreeBSD.org 1995-05-21T21:39:31Z urn:sha1:61f5d510623c7fd6aa5335cf8c5b785915365c8d 1) Files weren't properly synced on filesystems other than UFS. In some cases, this lead to lost data. Most likely would be noticed on NFS. The fix is to make the VM page sync/object_clean general rather than in each filesystem. 2) Mixing regular and mmaped file I/O on NFS was very broken. It caused chunks of files to end up as zeroes rather than the intended contents. The fix was to fix several race conditions and to kludge up the "b_dirtyoff" and "b_dirtyend" that NFS relies upon - paying attention to page modifications that occurred via the mmapping. Reviewed by: David Greenman Submitted by: John Dyson 1995-05-02T05:57:11Z David Greenman dg@FreeBSD.org 1995-05-02T05:57:11Z urn:sha1:f325917a653e93998f1013081225956ce032f58e space for the hash list buckets and is a little faster. The features of tailq aren't needed. Increased the size of the object hash table to improve performance. In the future, this will be changed so that the table is sized dynamically. 1995-04-21T02:48:40Z John Dyson dyson@FreeBSD.org 1995-04-21T02:48:40Z urn:sha1:7e15fd27577744fa48ca9fde818f113b7bd52927 infinite loop. 1995-04-16T12:56:22Z David Greenman dg@FreeBSD.org 1995-04-16T12:56:22Z urn:sha1:c3cb3e12f5247fa2d7fa6e5f1e8784160c5da89a called only from DDB #ifdef DDB. Removed some completely unused globals. 1995-04-16T03:11:28Z David Greenman dg@FreeBSD.org 1995-04-16T03:11:28Z urn:sha1:ec4f9fb0ee96e85040eae669f59d7bd9911d37f8 pages that are in FS buffers. This fixes the (believed to already have been fixed) problem with msync() not doing it's job...in other words, the stuff that Andrew has continuously been complaining about. Submitted by: John Dyson, w/minor changes by me. 1995-04-09T06:03:56Z David Greenman dg@FreeBSD.org 1995-04-09T06:03:56Z urn: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. 1995-03-25T08:42:14Z David Greenman dg@FreeBSD.org 1995-03-25T08:42:14Z urn:sha1:260295f9793b0b0c97203585729a844c687502d2 our framework, these numbers will usually be nearly the same, and not because of any sort of high 'hit rate'.