CVS log for src/sys/miscfs/specfs/Attic/spec_vnops.c
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Revision 1.159
Wed May 23 09:42:20 2001 UTC (10 years, 8 months ago) by ru
Branches: MAIN
CVS tags: HEAD
FILE REMOVED
Changes since revision 1.158: +1 -1 lines
- FDESC, FIFO, NULL, PORTAL, PROC, UMAP and UNION file
systems were repo-copied from sys/miscfs to sys/fs.
- Renamed the following file systems and their modules:
fdesc -> fdescfs, portal -> portalfs, union -> unionfs.
- Renamed corresponding kernel options:
FDESC -> FDESCFS, PORTAL -> PORTALFS, UNION -> UNIONFS.
- Install header files for the above file systems.
- Removed bogus -I${.CURDIR}/../../sys CFLAGS from userland
Makefiles.
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Sat May 19 01:28:06 2001 UTC (10 years, 8 months ago) by alfred
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Diff to: previous 1.157: preferred, colored
Changes since revision 1.157: +5 -1 lines
Introduce a global lock for the vm subsystem (vm_mtx). vm_mtx does not recurse and is required for most low level vm operations. faults can not be taken without holding Giant. Memory subsystems can now call the base page allocators safely. Almost all atomic ops were removed as they are covered under the vm mutex. Alpha and ia64 now need to catch up to i386's trap handlers. FFS and NFS have been tested, other filesystems will need minor changes (grabbing the vm lock when twiddling page properties). Reviewed (partially) by: jake, jhb
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Mon Apr 30 14:35:35 2001 UTC (10 years, 9 months ago) by bde
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Diff to: previous 1.156: preferred, colored
Changes since revision 1.156: +2 -1 lines
Backed out previous commit. It cause massive filesystem corruption, not to mention a compile-time warning about the critical function becoming unused, by replacing spec_bmap() with vop_stdbmap(). ntfs seems to have the same bug. The factor for converting specfs block numbers to physical block numbers is 1, but vop_stdbmap() uses the bogus factor btodb(ap->a_vp->v_mount->mnt_stat.f_iosize), which is 16 for ffs with the default block size of 8K. This factor is bogus even for vop_stdbmap() -- the correct factor is related to the filesystem blocksize which is not necessarily the same to the optimal i/o size. vop_stdbmap() was apparently cloned from nfs where these sizes happen to be the same. There may also be a problem with a_vp->v_mount being null. spec_bmap() still checks for this, but I think the checks in specfs are dead code which used to support block devices.
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Sun Apr 29 11:48:37 2001 UTC (10 years, 9 months ago) by phk
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Diff to: previous 1.155: preferred, colored
Changes since revision 1.155: +1 -2 lines
Add a vop_stdbmap(), and make it part of the default vop vector. Make 7 filesystems which don't really know about VOP_BMAP rely on the default vector, rather than more or less complete local vop_nopbmap() implementations.
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Sun Apr 29 02:44:59 2001 UTC (10 years, 9 months ago) by grog
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Diff to: previous 1.154: preferred, colored
Changes since revision 1.154: +1 -3 lines
Revert consequences of changes to mount.h, part 2. Requested by: bde
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Mon Apr 23 08:52:42 2001 UTC (10 years, 9 months ago) by grog
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Diff to: previous 1.153: preferred, colored
Changes since revision 1.153: +3 -1 lines
Correct #includes to work with fixed sys/mount.h.
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Wed Mar 7 07:09:54 2001 UTC (10 years, 11 months ago) by mckusick
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Diff to: previous 1.152: preferred, colored
Changes since revision 1.152: +3 -3 lines
Fixes to track snapshot copy-on-write checking in the specinfo structure rather than assuming that the device vnode would reside in the FFS filesystem (which is obviously a broken assumption with the device filesystem).
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Mon Feb 26 04:23:20 2001 UTC (10 years, 11 months ago) by jlemon
Branches: RELENG_4
CVS tags: RELENG_4_9_BP, RELENG_4_9_0_RELEASE, RELENG_4_9, RELENG_4_8_BP, RELENG_4_8_0_RELEASE, RELENG_4_8, RELENG_4_7_BP, RELENG_4_7_0_RELEASE, RELENG_4_7, RELENG_4_6_BP, RELENG_4_6_2_RELEASE, RELENG_4_6_1_RELEASE, RELENG_4_6_0_RELEASE, RELENG_4_6, RELENG_4_5_BP, RELENG_4_5_0_RELEASE, RELENG_4_5, RELENG_4_4_BP, RELENG_4_4_0_RELEASE, RELENG_4_4, RELENG_4_3_BP, RELENG_4_3_0_RELEASE, RELENG_4_3, RELENG_4_11_BP, RELENG_4_11_0_RELEASE, RELENG_4_11, RELENG_4_10_BP, RELENG_4_10_0_RELEASE, RELENG_4_10
Diff to: previous 1.131.2.3: preferred, colored; branchpoint 1.131: preferred, colored; next MAIN 1.132: preferred, colored
Changes since revision 1.131.2.3: +20 -1 lines
MFC: sync kq up to current (extend to device layer, plus other fixes)
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Thu Feb 15 16:34:09 2001 UTC (10 years, 11 months ago) by jlemon
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Diff to: previous 1.151: preferred, colored
Changes since revision 1.151: +20 -1 lines
Extend kqueue down to the device layer. Backwards compatible approach suggested by: peter
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Sun Feb 4 16:08:11 2001 UTC (11 years ago) by phk
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Diff to: previous 1.150: preferred, colored
Changes since revision 1.150: +2 -3 lines
Another round of the <sys/queue.h> FOREACH transmogriffer. Created with: sed(1) Reviewed by: md5(1)
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Fri Feb 2 21:20:24 2001 UTC (11 years ago) by dillon
Branches: RELENG_4
Diff to: previous 1.131.2.2: preferred, colored; branchpoint 1.131: preferred, colored
Changes since revision 1.131.2.2: +30 -8 lines
MFC 1.148, 1.149 - use mark/scan to avoid cpu loop waiting for interrupt when a buffer is skipped due to being busy. Continue to ensure that a MNT_WAIT fsync drains all buffers to avoid panic in umount/vinvalbuf
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Tue Jan 30 10:06:08 2001 UTC (11 years ago) by phk
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Diff to: previous 1.149: preferred, colored
Changes since revision 1.149: +2 -1 lines
Add a BUF_KERNPROC() in the BIO_DELETE path. This seems to fix the problem which md(4) backed filesystems exposed.
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Mon Jan 29 08:19:28 2001 UTC (11 years ago) by dillon
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Diff to: previous 1.148: preferred, colored
Changes since revision 1.148: +17 -8 lines
This patch reestablishes the spec_fsync() guarentee that synchronous fsyncs, which typically occur during unmounting, will drain all dirty buffers even if it takes multiple passes to do so. The guarentee was mangled by the last patch which solved a problem due to -current disabling interrupts while holding giant (which caused an infinite spin loop waiting for I/O to complete). -stable does not have either patch, but has a similar bug in the original spec_fsync() code which is triggered by a bug in the softupdates umount code, a fix for which will be committed to -current as soon as Kirk stamps it. Then both solutions will be MFC'd to -stable. -stable currently suffers from a combination of the softupdates bug and a small window of opportunity in the original spec_fsync() code, and -stable also suffers from the spin-loop bug but since interrupts are enabled the spin resolves itself in a few milliseconds.
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Sat Dec 30 23:32:24 2000 UTC (11 years, 1 month ago) by dillon
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Diff to: previous 1.147: preferred, colored
Changes since revision 1.147: +14 -1 lines
Fix a lockup problem that occurs with 'cvs update'. specfs's fsync can get into the same sort of infinite loop that ffs's fsync used to get into, probably due to background bitmap writes. The solution is the same.
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Sat Dec 30 01:51:09 2000 UTC (11 years, 1 month ago) by dillon
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Diff to: previous 1.131.2.1: preferred, colored; branchpoint 1.131: preferred, colored
Changes since revision 1.131.2.1: +3 -1 lines
MFC vfs_bio.c 1.269 and friends. This MFC's the better launder limiting solution. See commitlogs/sys '2000/12/26 11:41:38 PST'
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Tue Dec 26 19:41:37 2000 UTC (11 years, 1 month ago) by dillon
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Diff to: previous 1.146: preferred, colored
Changes since revision 1.146: +3 -1 lines
This implements a better launder limiting solution. There was a solution in 4.2-REL which I ripped out in -stable and -current when implementing the low-memory handling solution. However, maxlaunder turns out to be the saving grace in certain very heavily loaded systems (e.g. newsreader box). The new algorithm limits the number of pages laundered in the first pageout daemon pass. If that is not sufficient then suceessive will be run without any limit. Write I/O is now pipelined using two sysctls, vfs.lorunningspace and vfs.hirunningspace. This prevents excessive buffered writes in the disk queues which cause long (multi-second) delays for reads. It leads to more stable (less jerky) and generally faster I/O streaming to disk by allowing required read ops (e.g. for indirect blocks and such) to occur without interrupting the write stream, amoung other things. NOTE: eventually, filesystem write I/O pipelining needs to be done on a per-device basis. At the moment it is globalized.
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Thu Nov 2 21:14:13 2000 UTC (11 years, 3 months ago) by phk
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Diff to: previous 1.145: preferred, colored
Changes since revision 1.145: +3 -10 lines
Take VBLK devices further out of their missery. This should fix the panic I introduced in my previous commit on this topic.
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Mon Oct 9 17:31:37 2000 UTC (11 years, 4 months ago) by eivind
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Diff to: previous 1.144: preferred, colored
Changes since revision 1.144: +6 -6 lines
Blow away the v_specmountpoint define, replacing it with what it was defined as (rdev->si_mountpoint)
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Thu Aug 24 15:36:53 2000 UTC (11 years, 5 months ago) by phk
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CVS tags: PRE_SMPNG
Diff to: previous 1.143: preferred, colored
Changes since revision 1.143: +12 -4 lines
Fix panic when removing open device (found by bp@) Implement subdirs. Build the full "devicename" for cloning functions. Fix panic when deleted device goes away. Collaps devfs_dir and devfs_dirent structures. Add proper cloning to the /dev/fd* "device-"driver. Fix a bug in make_dev_alias() handling which made aliases appear multiple times. Use devfs_clone to implement getdiskbyname() Make specfs maintain the stat(2) timestamps per dev_t
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Fri Aug 18 10:01:01 2000 UTC (11 years, 5 months ago) by phk
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Diff to: previous 1.142: preferred, colored
Changes since revision 1.142: +2 -16 lines
Introduce vop_stdinactive() and make it the default if no vop_inactive is declared. Sort and prune a few vop_op[].
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Mon Jul 24 05:28:29 2000 UTC (11 years, 6 months ago) by mckusick
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Diff to: previous 1.141: preferred, colored
Changes since revision 1.141: +5 -3 lines
This patch corrects the first round of panics and hangs reported with the new snapshot code. Update addaliasu to correctly implement the semantics of the old checkalias function. When a device vnode first comes into existence, check to see if an anonymous vnode for the same device was created at boot time by bdevvp(). If so, adopt the bdevvp vnode rather than creating a new vnode for the device. This corrects a problem which caused the kernel to panic when taking a snapshot of the root filesystem. Change the calling convention of vn_write_suspend_wait() to be the same as vn_start_write(). Split out softdep_flushworklist() from softdep_flushfiles() so that it can be used to clear the work queue when suspending filesystem operations. Access to buffers becomes recursive so that snapshots can recursively traverse their indirect blocks using ffs_copyonwrite() when checking for the need for copy on write when flushing one of their own indirect blocks. This eliminates a deadlock between the syncer daemon and a process taking a snapshot. Ensure that softdep_process_worklist() can never block because of a snapshot being taken. This eliminates a problem with buffer starvation. Cleanup change in ffs_sync() which did not synchronously wait when MNT_WAIT was specified. The result was an unclean filesystem panic when doing forcible unmount with heavy filesystem I/O in progress. Return a zero'ed block when reading a block that was not in use at the time that a snapshot was taken. Normally, these blocks should never be read. However, the readahead code will occationally read them which can cause unexpected behavior. Clean up the debugging code that ensures that no blocks be written on a filesystem while it is suspended. Snapshots must explicitly label the blocks that they are writing during the suspension so that they do not cause a `write on suspended filesystem' panic. Reorganize ffs_copyonwrite() to eliminate a deadlock and also to prevent a race condition that would permit the same block to be copied twice. This change eliminates an unexpected soft updates inconsistency in fsck caused by the double allocation. Use bqrelse rather than brelse for buffers that will be needed soon again by the snapshot code. This improves snapshot performance.
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Tue Jul 11 22:07:46 2000 UTC (11 years, 7 months ago) by mckusick
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Diff to: previous 1.140: preferred, colored
Changes since revision 1.140: +19 -5 lines
Add snapshots to the fast filesystem. Most of the changes support the gating of system calls that cause modifications to the underlying filesystem. The gating can be enabled by any filesystem that needs to consistently suspend operations by adding the vop_stdgetwritemount to their set of vnops. Once gating is enabled, the function vfs_write_suspend stops all new write operations to a filesystem, allows any filesystem modifying system calls already in progress to complete, then sync's the filesystem to disk and returns. The function vfs_write_resume allows the suspended write operations to begin again. Gating is not added by default for all filesystems as for SMP systems it adds two extra locks to such critical kernel paths as the write system call. Thus, gating should only be added as needed. Details on the use and current status of snapshots in FFS can be found in /sys/ufs/ffs/README.snapshot so for brevity and timelyness is not included here. Unless and until you create a snapshot file, these changes should have no effect on your system (famous last words).
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Mon Jul 3 13:48:37 2000 UTC (11 years, 7 months ago) by phk
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Diff to: previous 1.139: preferred, colored
Changes since revision 1.139: +4 -4 lines
Pull the rug under block mode devices. they return ENXIO on open(2) now.
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Fri Jun 16 08:48:48 2000 UTC (11 years, 7 months ago) by phk
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Diff to: previous 1.138: preferred, colored
Changes since revision 1.138: +3 -4 lines
Virtualizes & untangles the bioops operations vector. Ref: Message-ID: <18317.961014572@critter.freebsd.dk> To: current@
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Mon Jun 12 10:20:18 2000 UTC (11 years, 8 months ago) by jmb
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Diff to: previous 1.137: preferred, colored
Changes since revision 1.137: +2 -2 lines
before this commit, specfs reported disk partitions using decimal major and minor numbers. "ls -l" reports disk partitions using decimal major numbers and hex minor numbers. make specfs use decimal major numbers and hex minor numbers, just like "ls -l"
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Tue May 9 18:53:53 2000 UTC (11 years, 9 months ago) by phk
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Diff to: previous 1.136: preferred, colored
Changes since revision 1.136: +10 -1 lines
Change the "bdev-whiner" to whine when open is attempted and extend the deadline a month.
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Fri May 5 09:58:31 2000 UTC (11 years, 9 months ago) by phk
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Diff to: previous 1.135: preferred, colored
Changes since revision 1.135: +2 -1 lines
Separate the struct bio related stuff out of <sys/buf.h> into <sys/bio.h>. <sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall not be made a nested include according to bdes teachings on the subject of nested includes. Diskdrivers and similar stuff below specfs::strategy() should no longer need to include <sys/buf.> unless they need caching of data. Still a few bogus uses of struct buf to track down. Repocopy by: peter
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Sun Apr 2 15:24:24 2000 UTC (11 years, 10 months ago) by phk
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Diff to: previous 1.134: preferred, colored
Changes since revision 1.134: +2 -2 lines
Move B_ERROR flag to b_ioflags and call it BIO_ERROR. (Much of this done by script) Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED. Move b_pblkno and b_iodone_chain to struct bio while we transition, they will be obsoleted once bio structs chain/stack. Add bio_queue field for struct bio aware disksort. Address a lot of stylistic issues brought up by bde.
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Mon Mar 20 11:28:50 2000 UTC (11 years, 10 months ago) by phk
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Diff to: previous 1.133: preferred, colored
Changes since revision 1.133: +4 -4 lines
Rename the existing BUF_STRATEGY() to DEV_STRATEGY() substitute BUF_WRITE(foo) for VOP_BWRITE(foo->b_vp, foo) substitute BUF_STRATEGY(foo) for VOP_STRATEGY(foo->b_vp, foo) This patch is machine generated except for the ccd.c and buf.h parts.
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Mon Mar 20 10:44:32 2000 UTC (11 years, 10 months ago) by phk
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Diff to: previous 1.132: preferred, colored
Changes since revision 1.132: +5 -5 lines
Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new field in struct buf: b_iocmd. The b_iocmd is enforced to have exactly one bit set. B_WRITE was bogusly defined as zero giving rise to obvious coding mistakes. Also eliminate the redundant struct buf flag B_CALL, it can just as efficiently be done by comparing b_iodone to NULL. Should you get a panic or drop into the debugger, complaining about "b_iocmd", don't continue. It is likely to write on your disk where it should have been reading. This change is a step in the direction towards a stackable BIO capability. A lot of this patch were machine generated (Thanks to style(9) compliance!) Vinum users: Greg has not had time to test this yet, be careful.
Revision 1.131.2.1: download - view: text, markup, annotated - select for diffs
Fri Mar 17 10:47:33 2000 UTC (11 years, 10 months ago) by ps
Branches: RELENG_4
CVS tags: RELENG_4_2_0_RELEASE, RELENG_4_1_1_RELEASE, RELENG_4_1_0_RELEASE
Diff to: previous 1.131: preferred, colored
Changes since revision 1.131: +1 -3 lines
MFC: Remove MAX_PERF with extreme prejudice.
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Thu Mar 16 08:51:54 2000 UTC (11 years, 10 months ago) by phk
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Diff to: previous 1.131: preferred, colored
Changes since revision 1.131: +1 -3 lines
Eliminate the undocumented, experimental, non-delivering and highly dangerous MAX_PERF option.
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Mon Jan 10 12:04:19 2000 UTC (12 years, 1 month ago) by phk
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CVS tags: RELENG_4_BP, RELENG_4_0_0_RELEASE
Branch point for: RELENG_4
Diff to: previous 1.130: preferred, colored
Changes since revision 1.130: +7 -6 lines
Give vn_isdisk() a second argument where it can return a suitable errno. Suggested by: bde
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Wed Dec 8 08:59:39 1999 UTC (12 years, 2 months ago) by phk
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Diff to: previous 1.129: preferred, colored
Changes since revision 1.129: +1 -5 lines
Remove unused #includes. Obtained from: http://bogon.freebsd.dk/include
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Wed Dec 1 02:09:30 1999 UTC (12 years, 2 months ago) by mckusick
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Diff to: previous 1.128: preferred, colored
Changes since revision 1.128: +22 -1 lines
Collect read and write counts for filesystems. This new code drops the counting in bwrite and puts it all in spec_strategy. I did some tests and verified that the counts collected for writes in spec_strategy is identical to the counts that we previously collected in bwrite. We now also get read counts (async reads come from requests for read-ahead blocks). Note that you need to compile a new version of mount to get the read counts printed out. The old mount binary is completely compatible, the only reason to install a new mount is to get the read counts printed. Submitted by: Craig A Soules <soules+@andrew.cmu.edu> Reviewed by: Kirk McKusick <mckusick@mckusick.com>
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Tue Nov 9 14:15:23 1999 UTC (12 years, 3 months ago) by phk
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Diff to: previous 1.127: preferred, colored
Changes since revision 1.127: +79 -322 lines
Next step in the device cleanup process. Correctly lock vnodes when calling VOP_OPEN() from filesystem mount code. Unify spec_open() for bdev and cdev cases. Remove the disabled bdev specific read/write code.
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Mon Nov 8 13:08:02 1999 UTC (12 years, 3 months ago) by phk
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Diff to: previous 1.126: preferred, colored
Changes since revision 1.126: +1 -4 lines
Oops, a bit too hasty there.
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Mon Nov 8 09:59:34 1999 UTC (12 years, 3 months ago) by phk
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Diff to: previous 1.125: preferred, colored
Changes since revision 1.125: +15 -28 lines
Various cleanups.
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Sun Nov 7 15:09:59 1999 UTC (12 years, 3 months ago) by phk
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Diff to: previous 1.124: preferred, colored
Changes since revision 1.124: +12 -24 lines
Use vop_panic() instead of spec_badop().
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Sun Nov 7 12:01:32 1999 UTC (12 years, 3 months ago) by phk
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Diff to: previous 1.123: preferred, colored
Changes since revision 1.123: +2 -4 lines
Remove the iskmemdev() function. Make it the responsibility of the mem.c drivers to enforce the securelevel checks.
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Mon Nov 1 02:53:38 1999 UTC (12 years, 3 months ago) by phk
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Diff to: previous 1.122: preferred, colored
Changes since revision 1.122: +1 -19 lines
Remove specfs::vop_lookup() There is no code path which can call it.
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Fri Oct 29 18:09:04 1999 UTC (12 years, 3 months ago) by phk
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Diff to: previous 1.121: preferred, colored
Changes since revision 1.121: +1 -2 lines
useracc() the prequel:
Merge the contents (less some trivial bordering the silly comments)
of <vm/vm_prot.h> and <vm/vm_inherit.h> into <vm/vm.h>. This puts
the #defines for the vm_inherit_t and vm_prot_t types next to their
typedefs.
This paves the road for the commit to follow shortly: change
useracc() to use VM_PROT_{READ|WRITE} rather than B_{READ|WRITE}
as argument.
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Wed Oct 20 06:31:49 1999 UTC (12 years, 3 months ago) by dillon
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Diff to: previous 1.120: preferred, colored
Changes since revision 1.120: +1 -8 lines
A tentative agreement has been reached in regards to a procedure
to remove 'b'lock devices. The agreement is, essentially, that
block devices will be collapsed into character devices as a first
step (though I don't particularly agree), and raw device names 'rxxx'
will become simply 'xxx' in devfs in the second step (i.e. no 'rxxx'
names will exist). The renaming will not effect the original /dev
and the expectation is that devfs will eventually (but not immediately)
become the standard way to access devices in the system.
If it is determined that a reimplementation of block device access
characteristics is beneficial, a number of alternatives will
be possible that do not involve resurrecting the 'b'lock device class.
For example, an ioctl() that might be made on an open character device
descriptor or a generic buffered overlay device.
This commit removes the blockdev disablement sysctl which does not
apply to the solution that was reached.
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Mon Oct 18 16:59:50 1999 UTC (12 years, 3 months ago) by phk
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Diff to: previous 1.119: preferred, colored
Changes since revision 1.119: +2 -2 lines
Change the default for the vfs.bdev_buffered sysctl to zero.
This means that access to block devices nodes will act the
same as char device nodes for disk-like devices.
If you encounter problems after this, where programs accessing
disks directly fail to operate, please use the following command
to revert to previous behaviour:
sysctl -w vfs.bdev_buffered=1
And verify that this was indeed the cause of your trouble.
See the mail-archives of the arch@FreeBSD.org list for background.
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Fri Oct 8 19:07:23 1999 UTC (12 years, 4 months ago) by phk
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Diff to: previous 1.118: preferred, colored
Changes since revision 1.118: +7 -1 lines
Add a couple of strategic KASSERTs
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Fri Oct 8 18:25:19 1999 UTC (12 years, 4 months ago) by phk
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Diff to: previous 1.117: preferred, colored
Changes since revision 1.117: +8 -1 lines
Add back sysctl vfs.enable_userblk_io
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Mon Oct 4 12:33:05 1999 UTC (12 years, 4 months ago) by phk
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Diff to: previous 1.116: preferred, colored
Changes since revision 1.116: +10 -1 lines
Warn once per driver about dev_t's not registered with make_dev().
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Mon Oct 4 11:23:09 1999 UTC (12 years, 4 months ago) by phk
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Diff to: previous 1.115: preferred, colored
Changes since revision 1.115: +211 -182 lines
Move the buffered read/write code out of spec_{read|write} and into
two new functions spec_buf{read|write}.
Add sysctl vfs.bdev_buffered which defaults to 1 == true. This
sysctl can be used to experimentally turn buffered behaviour for
bdevs off. I should not be changed while any blockdevices are
open. Remove the misplaced sysctl vfs.enable_userblk_io.
No other changes in behaviour.
Revision 1.115: download - view: text, markup, annotated - select for diffs
Wed Sep 29 20:04:44 1999 UTC (12 years, 4 months ago) by phk
Branches: MAIN
Diff to: previous 1.114: preferred, colored
Changes since revision 1.114: +1 -8 lines
Remove v_maxio from struct vnode. Replace it with mnt_iosize_max in struct mount. Nits from: bde
Revision 1.114: download - view: text, markup, annotated - select for diffs
Sat Sep 25 18:52:03 1999 UTC (12 years, 4 months ago) by phk
Branches: MAIN
Diff to: previous 1.113: preferred, colored
Changes since revision 1.113: +2 -4 lines
Remove a warning check which was too general.
Revision 1.113: download - view: text, markup, annotated - select for diffs
Sat Sep 25 18:24:26 1999 UTC (12 years, 4 months ago) by phk
Branches: MAIN
Diff to: previous 1.112: preferred, colored
Changes since revision 1.112: +3 -3 lines
Remove five now unused fields from struct cdevsw. They should never have been there in the first place. A GENERIC kernel shrinks almost 1k. Add a slightly different safetybelt under nostop for tty drivers. Add some missing FreeBSD tags
Revision 1.112: download - view: text, markup, annotated - select for diffs
Sat Sep 25 16:21:31 1999 UTC (12 years, 4 months ago) by phk
Branches: MAIN
Diff to: previous 1.111: preferred, colored
Changes since revision 1.111: +23 -8 lines
This patch clears the way for removing a number of tty related
fields in struct cdevsw:
d_stop moved to struct tty.
d_reset already unused.
d_devtotty linkage now provided by dev_t->si_tty.
These fields will be removed from struct cdevsw together with
d_params and d_maxio Real Soon Now.
The changes in this patch consist of:
initialize dev->si_tty in *_open()
initialize tty->t_stop
remove devtotty functions
rename ttpoll to ttypoll
a few adjustments to these changes in the generic code
a bump of __FreeBSD_version
add a couple of FreeBSD tags
Revision 1.111: download - view: text, markup, annotated - select for diffs
Wed Sep 22 19:56:09 1999 UTC (12 years, 4 months ago) by phk
Branches: MAIN
Diff to: previous 1.110: preferred, colored
Changes since revision 1.110: +11 -9 lines
Kill the cdevsw->d_maxio field. d_maxio is replaced by the dev->si_iosize_max field which the driver should be set in all calls to cdevsw->d_open if it has a better idea than the system wide default. The field is a generic dev_t field (ie: not disk specific) so that tapes and other devices can use physio as well.
Revision 1.110: download - view: text, markup, annotated - select for diffs
Mon Sep 20 23:17:47 1999 UTC (12 years, 4 months ago) by dillon
Branches: MAIN
Diff to: previous 1.109: preferred, colored
Changes since revision 1.109: +67 -8 lines
Fix handling of a device EOF that occurs in the middle of a block. The
transfer size calculation was incorrect resulting in the last read being
potentially larger then the actual extent of the device.
EOF and write handling has not yet been fixed.
Reviewed by: Tor.Egge@fast.no
Revision 1.109: download - view: text, markup, annotated - select for diffs
Mon Sep 20 19:57:28 1999 UTC (12 years, 4 months ago) by phk
Branches: MAIN
Diff to: previous 1.108: preferred, colored
Changes since revision 1.108: +10 -4 lines
Step one of replacing devsw->d_maxio with si_bsize_max. Rename dev->si_bsize_max to si_iosize_max and set it in spec_open if the device didn't. Set vp->v_maxio from dev->si_bsize_max in spec_open rather than in ufs_bmap.c
Revision 1.108: download - view: text, markup, annotated - select for diffs
Fri Sep 17 06:10:26 1999 UTC (12 years, 4 months ago) by dillon
Branches: MAIN
Diff to: previous 1.107: preferred, colored
Changes since revision 1.107: +10 -5 lines
Add vfs.enable_userblk_io sysctl to control whether user reads and writes
to buffered block devices are allowed. The default is to be backwards
compatible, i.e. reads and writes are allowed.
The idea is for a larger crowd to start running with this disabled and
see what problems, if any, crop up, and then to change the default to
off and see if any problems crop up in the next 6 months prior to
potentially removing support entirely. There are still a few people,
Julian and myself included, who believe the buffered block device
access from usermode to be useful.
Remove use of vnode->v_lastr from buffered block device I/O in
preparation for removal of vnode->v_lastr field, replacing it with
the already existing seqcount metric to detect sequential operation.
Reviewed by: Alan Cox <alc@cs.rice.edu>, David Greenman <dg@root.com>
Revision 1.107: download - view: text, markup, annotated - select for diffs
Thu Sep 9 19:08:43 1999 UTC (12 years, 5 months ago) by julian
Branches: MAIN
Diff to: previous 1.106: preferred, colored
Changes since revision 1.106: +9 -3 lines
Changes to centralise the default blocksize behaviour. More likely to follow. Submitted by: phk@freebsd.org
Revision 1.11.4.2: download - view: text, markup, annotated - select for diffs
Sun Sep 5 08:33:37 1999 UTC (12 years, 5 months ago) by peter
Branches: RELENG_2_1_0
Diff to: previous 1.11.4.1: preferred, colored; branchpoint 1.11: preferred, colored; next MAIN 1.12: preferred, colored
Changes since revision 1.11.4.1: +1 -1 lines
$Id$ -> $FreeBSD$
Revision 1.33.2.1: download - view: text, markup, annotated - select for diffs
Sun Sep 5 08:17:00 1999 UTC (12 years, 5 months ago) by peter
Branches: RELENG_2_2
Diff to: previous 1.33: preferred, colored; next MAIN 1.34: preferred, colored
Changes since revision 1.33: +1 -1 lines
$Id$ -> $FreeBSD$
Revision 1.106: download - view: text, markup, annotated - select for diffs
Fri Sep 3 09:14:36 1999 UTC (12 years, 5 months ago) by julian
Branches: MAIN
Diff to: previous 1.105: preferred, colored
Changes since revision 1.105: +4 -3 lines
Print out the device name when there is an uninitialised IO size or IO error in spec_getpages(). Submitted by: phk suggested the idea.
Revision 1.105: download - view: text, markup, annotated - select for diffs
Fri Sep 3 08:26:46 1999 UTC (12 years, 5 months ago) by julian
Branches: MAIN
Diff to: previous 1.104: preferred, colored
Changes since revision 1.104: +14 -6 lines
Add a catchall to set default blocksize values for disk like devices. Submitted by: phk@freebsd.org
Revision 1.104: download - view: text, markup, annotated - select for diffs
Fri Sep 3 05:16:59 1999 UTC (12 years, 5 months ago) by julian
Branches: MAIN
Diff to: previous 1.103: preferred, colored
Changes since revision 1.103: +34 -45 lines
Revert a bunch of contraversial changes by PHK. After a quick think and discussion among various people some form of some of these changes will probably be recommitted. The reversion requested was requested by dg while discussions proceed. PHK has indicated that he can live with this, and it has been agreed that some form of some of these changes may return shortly after further discussion.
Revision 1.103: download - view: text, markup, annotated - select for diffs
Tue Aug 31 21:46:42 1999 UTC (12 years, 5 months ago) by phk
Branches: MAIN
Diff to: previous 1.102: preferred, colored
Changes since revision 1.102: +5 -5 lines
Set the buffersize for non BSDFFS labeled partitions to max(dev->si_bsize_phys, BLKDEV_IOSIZE). Requested by: davidg
Revision 1.102: download - view: text, markup, annotated - select for diffs
Tue Aug 31 21:01:51 1999 UTC (12 years, 5 months ago) by phk
Branches: MAIN
Diff to: previous 1.101: preferred, colored
Changes since revision 1.101: +19 -9 lines
Make buffered acces to bdevs from userland controllable with a sysctl vfs.bdev_access.
Revision 1.101: download - view: text, markup, annotated - select for diffs
Mon Aug 30 07:56:20 1999 UTC (12 years, 5 months ago) by phk
Branches: MAIN
Diff to: previous 1.100: preferred, colored
Changes since revision 1.100: +31 -30 lines
Make bdev userland access work like cdev userland access unless the highly non-recommended option ALLOW_BDEV_ACCESS is used. (bdev access is evil because you don't get write errors reported.) Kill si_bsize_best before it kills Matt :-) Use the specfs routines rather having cloned copies in devfs.
Revision 1.78.2.1: download - view: text, markup, annotated - select for diffs
Sun Aug 29 16:26:57 1999 UTC (12 years, 5 months ago) by peter
Branches: RELENG_3
CVS tags: RELENG_3_5_0_RELEASE, RELENG_3_4_0_RELEASE, RELENG_3_3_0_RELEASE
Diff to: previous 1.78: preferred, colored; next MAIN 1.79: preferred, colored
Changes since revision 1.78: +1 -1 lines
$Id$ -> $FreeBSD$
Revision 1.100: download - view: text, markup, annotated - select for diffs
Sat Aug 28 00:46:59 1999 UTC (12 years, 5 months ago) by peter
Branches: MAIN
Diff to: previous 1.99: preferred, colored
Changes since revision 1.99: +1 -1 lines
$Id$ -> $FreeBSD$
Revision 1.99: download - view: text, markup, annotated - select for diffs
Thu Aug 26 14:53:22 1999 UTC (12 years, 5 months ago) by phk
Branches: MAIN
Diff to: previous 1.98: preferred, colored
Changes since revision 1.98: +2 -3 lines
Simplify the handling of VCHR and VBLK vnodes using the new dev_t:
Make the alias list a SLIST.
Drop the "fast recycling" optimization of vnodes (including
the returning of a prexisting but stale vnode from checkalias).
It doesn't buy us anything now that we don't hardlimit
vnodes anymore.
Rename checkalias2() and checkalias() to addalias() and
addaliasu() - which takes dev_t and udev_t arg respectively.
Make the revoke syscalls use vcount() instead of VALIASED.
Remove VALIASED flag, we don't need it now and it is faster
to traverse the much shorter lists than to maintain the
flag.
vfs_mountedon() can check the dev_t directly, all the vnodes
point to the same one.
Print the devicename in specfs/vprint().
Remove a couple of stale LFS vnode flags.
Remove unimplemented/unused LK_DRAINED;
Revision 1.98: download - view: text, markup, annotated - select for diffs
Wed Aug 25 00:26:34 1999 UTC (12 years, 5 months ago) by julian
Branches: MAIN
Diff to: previous 1.97: preferred, colored
Changes since revision 1.97: +2 -1 lines
Fix comment to match reality.. vop_strategy gets a vnode argument these days.
Revision 1.97: download - view: text, markup, annotated - select for diffs
Tue Aug 17 04:02:04 1999 UTC (12 years, 5 months ago) by alc
Branches: MAIN
Diff to: previous 1.96: preferred, colored
Changes since revision 1.96: +3 -3 lines
Add the (inline) function vm_page_undirty for clearing the dirty bitmask of a vm_page. Use it. Submitted by: dillon
Revision 1.96: download - view: text, markup, annotated - select for diffs
Sat Aug 14 11:40:45 1999 UTC (12 years, 5 months ago) by phk
Branches: MAIN
Diff to: previous 1.95: preferred, colored
Changes since revision 1.95: +3 -3 lines
Spring cleaning around strategy and disklabels/slices: Introduce BUF_STRATEGY(struct buf *, int flag) macro, and use it throughout. please see comment in sys/conf.h about the flag argument. Remove strategy argument from all the diskslice/label/bad144 implementations, it should be found from the dev_t. Remove bogus and unused strategy1 routines. Remove open/close arguments from dssize(). Pick them up from dev_t. Remove unused and unfinished setgeom support from diskslice/label/bad144 code.
Revision 1.95: download - view: text, markup, annotated - select for diffs
Fri Aug 13 16:29:21 1999 UTC (12 years, 6 months ago) by phk
Branches: MAIN
Diff to: previous 1.94: preferred, colored
Changes since revision 1.94: +18 -59 lines
Add support for device drivers which want to track all open/close
operations. This allows a device driver better insight into
what is going on that the current:
proc1: open /dev/foo R/O
devsw->open( R/O, proc1 )
proc2: open /dev/foo R/W
devsw->open( R/W, proc2 )
proc2: close
/* nothing, but device is
really only R/O open */
proc1: close
devsw->close( R/O, proc1 )
Revision 1.94: download - view: text, markup, annotated - select for diffs
Fri Aug 13 10:53:58 1999 UTC (12 years, 6 months ago) by phk
Branches: MAIN
Diff to: previous 1.93: preferred, colored
Changes since revision 1.93: +1 -3 lines
Remove spec_getattr(), which as far as I can tell can never be called from the current code-paths, and if it were, would panic on any unmounted bdev.
Revision 1.93: download - view: text, markup, annotated - select for diffs
Fri Aug 13 10:29:23 1999 UTC (12 years, 6 months ago) by phk
Branches: MAIN
Diff to: previous 1.92: preferred, colored
Changes since revision 1.92: +9 -9 lines
The bdevsw() and cdevsw() are now identical, so kill the former.
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Fri Aug 13 10:10:10 1999 UTC (12 years, 6 months ago) by phk
Branches: MAIN
Diff to: previous 1.91: preferred, colored
Changes since revision 1.91: +6 -6 lines
s/v_specinfo/v_rdev/
Revision 1.91: download - view: text, markup, annotated - select for diffs
Sun Aug 8 18:42:52 1999 UTC (12 years, 6 months ago) by phk
Branches: MAIN
Diff to: previous 1.90: preferred, colored
Changes since revision 1.90: +1 -3 lines
Decommision miscfs/specfs/specdev.h. Most of it goes into <sys/conf.h>, a few lines into <sys/vnode.h>. Add a few fields to struct specinfo, paving the way for the fun part.
Revision 1.90: download - view: text, markup, annotated - select for diffs
Tue Jul 20 09:47:45 1999 UTC (12 years, 6 months ago) by phk
Branches: MAIN
Diff to: previous 1.89: preferred, colored
Changes since revision 1.89: +1 -2 lines
Now a dev_t is a pointer to struct specinfo which is shared by all specdev
vnodes referencing this device.
Details:
cdevsw->d_parms has been removed, the specinfo is available
now (== dev_t) and the driver should modify it directly
when applicable, and the only driver doing so, does so:
vn.c. I am not sure the logic in checking for "<" was right
before, and it looks even less so now.
An intial pool of 50 struct specinfo are depleted during
early boot, after that malloc had better work. It is
likely that fewer than 50 would do.
Hashing is done from udev_t to dev_t with a prime number
remainder hash, experiments show no better hash available
for decent cost (MD5 is only marginally better) The prime
number used should not be close to a power of two, we use
83 for now.
Add new checkalias2() to get around the loss of info from
dev2udev() in bdevvp();
The aliased vnodes are hung on a list straight of the dev_t,
and speclisth[SPECSZ] is unused. The sharing of struct
specinfo means that the v_specnext moves into the vnode
which grows by 4 bytes.
Don't use a VBLK dev_t which doesn't make sense in MFS, now
we hang a dummy cdevsw on B/Cmaj 253 so that things look sane.
Storage overhead from all of this is O(50k).
Bump __FreeBSD_version to 400009
The next step will add the stuff needed so device-drivers can start to
hang things from struct specinfo
Revision 1.89: download - view: text, markup, annotated - select for diffs
Sat Jun 26 02:46:21 1999 UTC (12 years, 7 months ago) by mckusick
Branches: MAIN
Diff to: previous 1.88: preferred, colored
Changes since revision 1.88: +5 -5 lines
Convert buffer locking from using the B_BUSY and B_WANTED flags to using lockmgr locks. This commit should be functionally equivalent to the old semantics. That is, all buffer locking is done with LK_EXCLUSIVE requests. Changes to take advantage of LK_SHARED and LK_RECURSIVE will be done in future commits.
Revision 1.88: download - view: text, markup, annotated - select for diffs
Tue Jun 1 20:29:58 1999 UTC (12 years, 8 months ago) by dt
Branches: MAIN
Diff to: previous 1.87: preferred, colored
Changes since revision 1.87: +1 -2 lines
Remove an unused variable.
Revision 1.87: download - view: text, markup, annotated - select for diffs
Mon May 31 11:27:56 1999 UTC (12 years, 8 months ago) by phk
Branches: MAIN
Diff to: previous 1.86: preferred, colored
Changes since revision 1.86: +1 -5 lines
Simplify cdevsw registration.
The cdevsw_add() function now finds the major number(s) in the
struct cdevsw passed to it. cdevsw_add_generic() is no longer
needed, cdevsw_add() does the same thing.
cdevsw_add() will print an message if the d_maj field looks bogus.
Remove nblkdev and nchrdev variables. Most places they were used
bogusly. Instead check a dev_t for validity by seeing if devsw()
or bdevsw() returns NULL.
Move bdevsw() and devsw() functions to kern/kern_conf.c
Bump __FreeBSD_version to 400006
This commit removes:
72 bogus makedev() calls
26 bogus SYSINIT functions
if_xe.c bogusly accessed cdevsw[], author/maintainer please fix.
I4b and vinum not changed. Patches emailed to authors. LINT
probably broken until they catch up.
Revision 1.86: download - view: text, markup, annotated - select for diffs
Tue May 11 19:54:38 1999 UTC (12 years, 9 months ago) by phk
Branches: MAIN
Diff to: previous 1.85: preferred, colored
Changes since revision 1.85: +2 -2 lines
Divorce "dev_t" from the "major|minor" bitmap, which is now called
udev_t in the kernel but still called dev_t in userland.
Provide functions to manipulate both types:
major() umajor()
minor() uminor()
makedev() umakedev()
dev2udev() udev2dev()
For now they're functions, they will become in-line functions
after one of the next two steps in this process.
Return major/minor/makedev to macro-hood for userland.
Register a name in cdevsw[] for the "filedescriptor" driver.
In the kernel the udev_t appears in places where we have the
major/minor number combination, (ie: a potential device: we
may not have the driver nor the device), like in inodes, vattr,
cdevsw registration and so on, whereas the dev_t appears where
we carry around a reference to a actual device.
In the future the cdevsw and the aliased-from vnode will be hung
directly from the dev_t, along with up to two softc pointers for
the device driver and a few houskeeping bits. This will essentially
replace the current "alias" check code (same buck, bigger bang).
A little stunt has been provided to try to catch places where the
wrong type is being used (dev_t vs udev_t), if you see something
not working, #undef DEVT_FASCIST in kern/kern_conf.c and see if
it makes a difference. If it does, please try to track it down
(many hands make light work) or at least try to reproduce it
as simply as possible, and describe how to do that.
Without DEVT_FASCIST I belive this patch is a no-op.
Stylistic/posixoid comments about the userland view of the <sys/*.h>
files welcome now, from userland they now contain the end result.
Next planned step: make all dev_t's refer to the same devsw[] which
means convert BLK's to CHR's at the perimeter of the vnodes and
other places where they enter the game (bootdev, mknod, sysctl).
Revision 1.85: download - view: text, markup, annotated - select for diffs
Sat May 8 06:39:55 1999 UTC (12 years, 9 months ago) by phk
Branches: MAIN
Diff to: previous 1.84: preferred, colored
Changes since revision 1.84: +24 -21 lines
I got tired of seeing all the cdevsw[major(foo)] all over the place. Made a new (inline) function devsw(dev_t dev) and substituted it. Changed to the BDEV variant to this format as well: bdevsw(dev_t dev) DEVFS will eventually benefit from this change too.
Revision 1.84: download - view: text, markup, annotated - select for diffs
Fri May 7 10:11:05 1999 UTC (12 years, 9 months ago) by phk
Branches: MAIN
Diff to: previous 1.83: preferred, colored
Changes since revision 1.83: +11 -11 lines
Continue where Julian left off in July 1998:
Virtualize bdevsw[] from cdevsw. bdevsw() is now an (inline)
function.
Join CDEV_MODULE and BDEV_MODULE to DEV_MODULE (please pay attention
to the order of the cmaj/bmaj arguments!)
Join CDEV_DRIVER_MODULE and BDEV_DRIVER_MODULE to DEV_DRIVER_MODULE
(ditto!)
(Next step will be to convert all bdev dev_t's to cdev dev_t's
before they get to do any damage^H^H^H^H^H^Hwork in the kernel.)
Revision 1.83: download - view: text, markup, annotated - select for diffs
Thu May 6 20:00:27 1999 UTC (12 years, 9 months ago) by phk
Branches: MAIN
Diff to: previous 1.82: preferred, colored
Changes since revision 1.82: +2 -3 lines
remove b_proc from struct buf, it's (now) unused. Reviewed by: dillon, bde
Revision 1.82: download - view: text, markup, annotated - select for diffs
Mon Apr 5 19:38:30 1999 UTC (12 years, 10 months ago) by julian
Branches: MAIN
CVS tags: PRE_VFS_BIO_NFS_PATCH, PRE_SMP_VMSHARE, PRE_NEWBUS, POST_VFS_BIO_NFS_PATCH, POST_SMP_VMSHARE, POST_NEWBUS, POST_MATT_MMAP_EOF
Diff to: previous 1.81: preferred, colored
Changes since revision 1.81: +13 -3 lines
Catch a case spotted by Tor where files mmapped could leave garbage in the
unallocated parts of the last page when the file ended on a frag
but not a page boundary.
Delimitted by tags PRE_MATT_MMAP_EOF and POST_MATT_MMAP_EOF,
in files alpha/alpha/pmap.c i386/i386/pmap.c nfs/nfs_bio.c vm/pmap.h
vm/vm_page.c vm/vm_page.h vm/vnode_pager.c miscfs/specfs/spec_vnops.c
ufs/ufs/ufs_readwrite.c kern/vfs_bio.c
Submitted by: Matt Dillon <dillon@freebsd.org>
Reviewed by: Alan Cox <alc@freebsd.org>
Revision 1.81: download - view: text, markup, annotated - select for diffs
Thu Feb 25 05:22:30 1999 UTC (12 years, 11 months ago) by dillon
Branches: MAIN
CVS tags: PRE_MATT_MMAP_EOF
Diff to: previous 1.80: preferred, colored
Changes since revision 1.80: +42 -23 lines
Reviewed by: Julian Elischer <julian@whistle.com> Add d_parms() to {c,b}devsw[]. If non-NULL this function points to a device routine that will properly fill in the specinfo structure. vfs_subr.c's checkalias() supplies appropriate defaults. This change should be fully backwards compatible with existing devices.
Revision 1.80: download - view: text, markup, annotated - select for diffs
Wed Jan 27 22:42:07 1999 UTC (13 years ago) by dillon
Branches: MAIN
Diff to: previous 1.79: preferred, colored
Changes since revision 1.79: +5 -2 lines
Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
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Thu Jan 21 08:29:07 1999 UTC (13 years ago) by dillon
Branches: MAIN
CVS tags: POST_MATT_SWAPPER
Diff to: previous 1.78: preferred, colored
Changes since revision 1.78: +4 -4 lines
This is a rather large commit that encompasses the new swapper,
changes to the VM system to support the new swapper, VM bug
fixes, several VM optimizations, and some additional revamping of the
VM code. The specific bug fixes will be documented with additional
forced commits. This commit is somewhat rough in regards to code
cleanup issues.
Reviewed by: "John S. Dyson" <root@dyson.iquest.net>, "David Greenman" <dg@root.com>
Revision 1.78: download - view: text, markup, annotated - select for diffs
Wed Dec 16 00:10:51 1998 UTC (13 years, 1 month ago) by eivind
Branches: MAIN
CVS tags: RELENG_3_BP, RELENG_3_2_PAO_BP, RELENG_3_2_PAO, RELENG_3_2_0_RELEASE, RELENG_3_1_0_RELEASE, PRE_MATT_SWAPPER
Branch point for: RELENG_3
Diff to: previous 1.77: preferred, colored
Changes since revision 1.77: +2 -2 lines
Fix possible NULL-pointer deref in error case (same as DEVFS).
Revision 1.77: download - view: text, markup, annotated - select for diffs
Mon Dec 7 21:58:33 1998 UTC (13 years, 2 months ago) by archie
Branches: MAIN
Diff to: previous 1.76: preferred, colored
Changes since revision 1.76: +1 -2 lines
The "easy" fixes for compiling the kernel -Wunused: remove unreferenced static and local variables, goto labels, and functions declared but not defined.
Revision 1.76: download - view: text, markup, annotated - select for diffs
Sat Oct 31 15:31:24 1998 UTC (13 years, 3 months ago) by peter
Branches: MAIN
Diff to: previous 1.75: preferred, colored
Changes since revision 1.75: +4 -4 lines
Use TAILQ macros for clean/dirty block list processing. Set b_xflags rather than abusing the list next pointer with a magic number.
Revision 1.75: download - view: text, markup, annotated - select for diffs
Mon Oct 26 08:53:13 1998 UTC (13 years, 3 months ago) by bde
Branches: MAIN
Diff to: previous 1.74: preferred, colored
Changes since revision 1.74: +3 -4 lines
Removed redundant bitrotted checks for major numbers instead of updating them.
Revision 1.74: download - view: text, markup, annotated - select for diffs
Sat Sep 12 20:21:54 1998 UTC (13 years, 5 months ago) by phk
Branches: MAIN
CVS tags: RELENG_3_0_0_RELEASE
Diff to: previous 1.73: preferred, colored
Changes since revision 1.73: +6 -5 lines
various nits that didn't make it through the brucefilter.
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Sat Sep 5 14:13:12 1998 UTC (13 years, 5 months ago) by phk
Branches: MAIN
Diff to: previous 1.72: preferred, colored
Changes since revision 1.72: +26 -1 lines
Add a new vnode op, VOP_FREEBLKS(), which filesystems can use to inform device drivers about sectors no longer in use. Device-drivers receive the call through d_strategy, if they have D_CANFREE in d_flags. This allows flash based devices to erase the sectors and avoid pointlessly carrying them around in compactions. Reviewed by: Kirk Mckusick, bde Sponsored by: M-Systems (www.m-sys.com)
Revision 1.72: download - view: text, markup, annotated - select for diffs
Fri Sep 4 08:06:56 1998 UTC (13 years, 5 months ago) by dfr
Branches: MAIN
Diff to: previous 1.71: preferred, colored
Changes since revision 1.71: +2 -2 lines
Cosmetic changes to the PAGE_XXX macros to make them consistent with the other objects in vm.
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Tue Aug 25 17:48:54 1998 UTC (13 years, 5 months ago) by phk
Branches: MAIN
Diff to: previous 1.70: preferred, colored
Changes since revision 1.70: +12 -12 lines
sort the prototypes
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Mon Aug 24 18:23:18 1998 UTC (13 years, 5 months ago) by phk
Branches: MAIN
Diff to: previous 1.69: preferred, colored
Changes since revision 1.69: +4 -2 lines
Last commit managed to get mangled somehow.
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Mon Aug 24 17:47:21 1998 UTC (13 years, 5 months ago) by phk
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Diff to: previous 1.68: preferred, colored
Changes since revision 1.68: +3 -13 lines
Remove the last remaining evidence of B_TAPE. Reclaim 3 unused bits in b_flags
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Sun Aug 23 11:43:29 1998 UTC (13 years, 5 months ago) by bde
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Diff to: previous 1.67: preferred, colored
Changes since revision 1.67: +2 -11 lines
Enabled Lite2 fix for reading from dead ttys.
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Wed Jul 15 02:32:22 1998 UTC (13 years, 6 months ago) by bde
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Diff to: previous 1.66: preferred, colored
Changes since revision 1.66: +2 -2 lines
Cast pointers to uintptr_t/intptr_t instead of to u_long/long, respectively. Most of the longs should probably have been u_longs, but this changes is just to prevent warnings about casts between pointers and integers of different sizes, not to fix poorly chosen types.
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Sat Jul 11 07:45:48 1998 UTC (13 years, 7 months ago) by bde
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Diff to: previous 1.65: preferred, colored
Changes since revision 1.65: +10 -6 lines
Fixed printf format errors.
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Sat Jul 4 22:30:23 1998 UTC (13 years, 7 months ago) by julian
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Diff to: previous 1.64: preferred, colored
Changes since revision 1.64: +3 -4 lines
There is no such thing any more as "struct bdevsw". There is only cdevsw (which should be renamed in a later edit to deventry or something). cdevsw contains the union of what were in both bdevsw an cdevsw entries. The bdevsw[] table stiff exists and is a second pointer to the cdevsw entry of the device. it's major is in d_bmaj rather than d_maj. some cleanup still to happen (e.g. dsopen now gets two pointers to the same cdevsw struct instead of one to a bdevsw and one to a cdevsw). rawread()/rawwrite() went away as part of this though it's not strictly the same patch, just that it involves all the same lines in the drivers. cdroms no longer have write() entries (they did have rawwrite (?)). tapes no longer have support for bdev operations. Reviewed by: Eivind Eklund and Mike Smith Changes suggested by eivind.
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Sat Jul 4 20:45:33 1998 UTC (13 years, 7 months ago) by julian
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CVS tags: PRE_NOBDEV
Diff to: previous 1.63: preferred, colored
Changes since revision 1.63: +2 -2 lines
VOP_STRATEGY grows an (struct vnode *) argument as the value in b_vp is often not really what you want. (and needs to be frobbed). more cleanups will follow this. Reviewed by: Bruce Evans <bde@freebsd.org>
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Sun Jun 7 17:11:59 1998 UTC (13 years, 8 months ago) by dfr
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Changes since revision 1.62: +2 -2 lines
This commit fixes various 64bit portability problems required for FreeBSD/alpha. The most significant item is to change the command argument to ioctl functions from int to u_long. This change brings us inline with various other BSD versions. Driver writers may like to use (__FreeBSD_version == 300003) to detect this change. The prototype FreeBSD/alpha machdep will follow in a couple of days time.
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Thu May 21 07:47:49 1998 UTC (13 years, 8 months ago) by dyson
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Diff to: previous 1.61: preferred, colored
Changes since revision 1.61: +3 -2 lines
Make flushing dirty pages work correctly on filesystems that unexpectedly do not complete writes even with sync I/O requests. This should help the behavior of mmaped files when using softupdates (and perhaps in other circumstances also.)
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Sun Apr 19 23:32:26 1998 UTC (13 years, 9 months ago) by julian
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CVS tags: POST_DEVFS_SLICE
Diff to: previous 1.60: preferred, colored
Changes since revision 1.60: +9 -2 lines
Add changes and code to implement a functional DEVFS. This code will be turned on with the TWO options DEVFS and SLICE. (see LINT) Two labels PRE_DEVFS_SLICE and POST_DEVFS_SLICE will deliniate these changes. /dev will be automatically mounted by init (thanks phk) on bootup. See /sys/dev/slice/slice.4 for more info. All code should act the same without these options enabled. Mike Smith, Poul Henning Kamp, Soeren, and a few dozen others This code does not support the following: bad144 handling. Persistance. (My head is still hurting from the last time we discussed this) ATAPI flopies are not handled by the SLICE code yet. When this code is running, all major numbers are arbitrary and COULD be dynamically assigned. (this is not done, for POLA only) Minor numbers for disk slices ARE arbitray and dynamically assigned.
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Sun Mar 8 09:57:36 1998 UTC (13 years, 11 months ago) by julian
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CVS tags: PRE_DEVFS_SLICE, POST_SOFTUPDATE
Diff to: previous 1.59: preferred, colored
Changes since revision 1.59: +8 -2 lines
Reviewed by: dyson@freebsd.org (john Dyson), dg@root.com (david greenman) Submitted by: Kirk McKusick (mcKusick@mckusick.com) Obtained from: WHistle development tree
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Sun Mar 8 08:46:18 1998 UTC (13 years, 11 months ago) by dyson
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CVS tags: PRE_SOFTUPDATE
Diff to: previous 1.58: preferred, colored
Changes since revision 1.58: +19 -7 lines
Initialize b_resid, and also print out better diagnostics on I/O errors. This will allow for better tracking of user error reports.
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Sat Mar 7 21:35:52 1998 UTC (13 years, 11 months ago) by dyson
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Diff to: previous 1.57: preferred, colored
Changes since revision 1.57: +55 -31 lines
This mega-commit is meant to fix numerous interrelated problems. There has been some bitrot and incorrect assumptions in the vfs_bio code. These problems have manifest themselves worse on NFS type filesystems, but can still affect local filesystems under certain circumstances. Most of the problems have involved mmap consistancy, and as a side-effect broke the vfs.ioopt code. This code might have been committed seperately, but almost everything is interrelated. 1) Allow (pmap_object_init_pt) prefaulting of buffer-busy pages that are fully valid. 2) Rather than deactivating erroneously read initial (header) pages in kern_exec, we now free them. 3) Fix the rundown of non-VMIO buffers that are in an inconsistent (missing vp) state. 4) Fix the disassociation of pages from buffers in brelse. The previous code had rotted and was faulty in a couple of important circumstances. 5) Remove a gratuitious buffer wakeup in vfs_vmio_release. 6) Remove a crufty and currently unused cluster mechanism for VBLK files in vfs_bio_awrite. When the code is functional, I'll add back a cleaner version. 7) The page busy count wakeups assocated with the buffer cache usage were incorrectly cleaned up in a previous commit by me. Revert to the original, correct version, but with a cleaner implementation. 8) The cluster read code now tries to keep data associated with buffers more aggressively (without breaking the heuristics) when it is presumed that the read data (buffers) will be soon needed. 9) Change to filesystem lockmgr locks so that they use LK_NOPAUSE. The delay loop waiting is not useful for filesystem locks, due to the length of the time intervals. 10) Correct and clean-up spec_getpages. 11) Implement a fully functional nfs_getpages, nfs_putpages. 12) Fix nfs_write so that modifications are coherent with the NFS data on the server disk (at least as well as NFS seems to allow.) 13) Properly support MS_INVALIDATE on NFS. 14) Properly pass down MS_INVALIDATE to lower levels of the VM code from vm_map_clean. 15) Better support the notion of pages being busy but valid, so that fewer in-transit waits occur. (use p->busy more for pageouts instead of PG_BUSY.) Since the page is fully valid, it is still usable for reads. 16) It is possible (in error) for cached pages to be busy. Make the page allocation code handle that case correctly. (It should probably be a printf or panic, but I want the system to handle coding errors robustly. I'll probably add a printf.) 17) Correct the design and usage of vm_page_sleep. It didn't handle consistancy problems very well, so make the design a little less lofty. After vm_page_sleep, if it ever blocked, it is still important to relookup the page (if the object generation count changed), and verify it's status (always.) 18) In vm_pageout.c, vm_pageout_clean had rotted, so clean that up. 19) Push the page busy for writes and VM_PROT_READ into vm_pageout_flush. 20) Fix vm_pager_put_pages and it's descendents to support an int flag instead of a boolean, so that we can pass down the invalidate bit.
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Wed Mar 4 06:44:59 1998 UTC (13 years, 11 months ago) by dyson
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Diff to: previous 1.56: preferred, colored
Changes since revision 1.56: +4 -9 lines
Fix certain kinds of block device operations. For example, tunefs on a block device shouldn't crash the system anymore.
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Fri Feb 6 12:13:43 1998 UTC (14 years ago) by eivind
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Diff to: previous 1.55: preferred, colored
Changes since revision 1.55: +1 -3 lines
Back out DIAGNOSTIC changes.
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Thu Feb 5 03:32:23 1998 UTC (14 years ago) by dyson
Branches: MAIN
Diff to: previous 1.54: preferred, colored
Changes since revision 1.54: +5 -2 lines
1) Start using a cleaner and more consistant page allocator instead of the various ad-hoc schemes. 2) When bringing in UPAGES, the pmap code needs to do another vm_page_lookup. 3) When appropriate, set the PG_A or PG_M bits a-priori to both avoid some processor errata, and to minimize redundant processor updating of page tables. 4) Modify pmap_protect so that it can only remove permissions (as it originally supported.) The additional capability is not needed. 5) Streamline read-only to read-write page mappings. 6) For pmap_copy_page, don't enable write mapping for source page. 7) Correct and clean-up pmap_incore. 8) Cluster initial kern_exec pagin. 9) Removal of some minor lint from kern_malloc. 10) Correct some ioopt code. 11) Remove some dead code from the MI swapout routine. 12) Correct vm_object_deallocate (to remove backing_object ref.) 13) Fix dead object handling, that had problems under heavy memory load. 14) Add minor vm_page_lookup improvements. 15) Some pages are not in objects, and make sure that the vm_page.c can properly support such pages. 16) Add some more page deficit handling. 17) Some minor code readability improvements.
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Wed Feb 4 22:32:51 1998 UTC (14 years ago) by eivind
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Diff to: previous 1.53: preferred, colored
Changes since revision 1.53: +3 -1 lines
Turn DIAGNOSTIC into a new-style option.
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Tue Jan 6 05:21:23 1998 UTC (14 years, 1 month ago) by dyson
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Diff to: previous 1.52: preferred, colored
Changes since revision 1.52: +18 -7 lines
Make our v_usecount vnode reference count work identically to the original BSD code. The association between the vnode and the vm_object no longer includes reference counts. The major difference is that vm_object's are no longer freed gratuitiously from the vnode, and so once an object is created for the vnode, it will last as long as the vnode does. When a vnode object reference count is incremented, then the underlying vnode reference count is incremented also. The two "objects" are now more intimately related, and so the interactions are now much less complex. When vnodes are now normally placed onto the free queue with an object still attached. The rundown of the object happens at vnode rundown time, and happens with exactly the same filesystem semantics of the original VFS code. There is absolutely no need for vnode_pager_uncache and other travesties like that anymore. A side-effect of these changes is that SMP locking should be much simpler, the I/O copyin/copyout optimizations work, NFS should be more ponderable, and further work on layered filesystems should be less frustrating, because of the totally coherent management of the vnode objects and vnodes. Please be careful with your system while running this code, but I would greatly appreciate feedback as soon a reasonably possible.
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Mon Dec 29 00:23:16 1997 UTC (14 years, 1 month ago) by dyson
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Diff to: previous 1.51: preferred, colored
Changes since revision 1.51: +3 -10 lines
Lots of improvements, including restructring the caching and management of vnodes and objects. There are some metadata performance improvements that come along with this. There are also a few prototypes added when the need is noticed. Changes include: 1) Cleaning up vref, vget. 2) Removal of the object cache. 3) Nuke vnode_pager_uncache and friends, because they aren't needed anymore. 4) Correct some missing LK_RETRY's in vn_lock. 5) Correct the page range in the code for msync. Be gentle, and please give me feedback asap.
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Mon Oct 27 13:33:42 1997 UTC (14 years, 3 months ago) by bde
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Diff to: previous 1.50: preferred, colored
Changes since revision 1.50: +1 -2 lines
Removed unused #includes. The need for most of them went away with recent changes (docluster* and vfs improvements).
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Sun Oct 26 20:55:24 1997 UTC (14 years, 3 months ago) by phk
Branches: MAIN
Diff to: previous 1.49: preferred, colored
Changes since revision 1.49: +6 -17 lines
VFS interior redecoration. Rename vn_default_error to vop_defaultop all over the place. Move vn_bwrite from vfs_bio.c to vfs_default.c and call it vop_stdbwrite. Use vop_null instead of nullop. Move vop_nopoll from vfs_subr.c to vfs_default.c Move vop_sharedlock from vfs_subr.c to vfs_default.c Move vop_nolock from vfs_subr.c to vfs_default.c Move vop_nounlock from vfs_subr.c to vfs_default.c Move vop_noislocked from vfs_subr.c to vfs_default.c Use vop_ebadf instead of *_ebadf. Add vop_defaultop for getpages on master vnode in MFS.
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Thu Oct 16 22:00:42 1997 UTC (14 years, 3 months ago) by phk
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Diff to: previous 1.48: preferred, colored
Changes since revision 1.48: +1 -4 lines
VFS clean up "hekto commit"
1. Add defaults for more VOPs
VOP_LOCK vop_nolock
VOP_ISLOCKED vop_noislocked
VOP_UNLOCK vop_nounlock
and remove direct reference in filesystems.
2. Rename the nfsv2 vnop tables to improve sorting order.
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Thu Oct 16 20:32:29 1997 UTC (14 years, 3 months ago) by phk
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Diff to: previous 1.47: preferred, colored
Changes since revision 1.47: +3 -44 lines
Another VFS cleanup "kilo commit"
1. Remove VOP_UPDATE, it is (also) an UFS/{FFS,LFS,EXT2FS,MFS}
intereface function, and now lives in the ufsmount structure.
2. Remove VOP_SEEK, it was unused.
3. Add mode default vops:
VOP_ADVLOCK vop_einval
VOP_CLOSE vop_null
VOP_FSYNC vop_null
VOP_IOCTL vop_enotty
VOP_MMAP vop_einval
VOP_OPEN vop_null
VOP_PATHCONF vop_einval
VOP_READLINK vop_einval
VOP_REALLOCBLKS vop_eopnotsupp
And remove identical functionality from filesystems
4. Add vop_stdpathconf, which returns the canonical stuff. Use
it in the filesystems. (XXX: It's probably wrong that specfs
and fifofs sets this vop, shouldn't it come from the "host"
filesystem, for instance ufs or cd9660 ?)
5. Try to make system wide VOP functions have vop_* names.
6. Initialize the um_* vectors in LFS.
(Recompile your LKMS!!!)
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Thu Oct 16 10:48:46 1997 UTC (14 years, 3 months ago) by phk
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Diff to: previous 1.46: preferred, colored
Changes since revision 1.46: +2 -9 lines
VFS mega cleanup commit (x/N)
1. Add new file "sys/kern/vfs_default.c" where default actions for
VOPs go. Implement proper defaults for ABORTOP, BWRITE, LEASE,
POLL, REVOKE and STRATEGY. Various stuff spread over the entire
tree belongs here.
2. Change VOP_BLKATOFF to a normal function in cd9660.
3. Kill VOP_BLKATOFF, VOP_TRUNCATE, VOP_VFREE, VOP_VALLOC. These
are private interface functions between UFS and the underlying
storage manager layer (FFS/LFS/MFS/EXT2FS). The functions now
live in struct ufsmount instead.
4. Remove a kludge of VOP_ functions in all filesystems, that did
nothing but obscure the simplicity and break the expandability.
If a filesystem doesn't implement VOP_FOO, it shouldn't have an
entry for it in its vnops table. The system will try to DTRT
if it is not implemented. There are still some cruft left, but
the bulk of it is done.
5. Fix another VCALL in vfs_cache.c (thanks Bruce!)
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Wed Oct 15 13:23:18 1997 UTC (14 years, 3 months ago) by phk
Branches: MAIN
Diff to: previous 1.45: preferred, colored
Changes since revision 1.45: +72 -44 lines
vnops megacommit 1. Use the default function to access all the specfs operations. 2. Use the default function to access all the fifofs operations. 3. Use the default function to access all the ufs operations. 4. Fix VCALL usage in vfs_cache.c 5. Use VOCALL to access specfs functions in devfs_vnops.c 6. Staticize most of the spec and fifofs vnops functions. 7. Make UFS panic if it lacks bits of the underlying storage handling.
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Wed Oct 15 10:04:43 1997 UTC (14 years, 3 months ago) by phk
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Diff to: previous 1.44: preferred, colored
Changes since revision 1.44: +9 -9 lines
Hmm, realign the vnops into two columns.
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Wed Oct 15 09:21:22 1997 UTC (14 years, 3 months ago) by phk
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Diff to: previous 1.43: preferred, colored
Changes since revision 1.43: +45 -49 lines
Stylistic overhaul of vnops tables.
1. Remove comment stating the blatantly obvious.
2. Align in two columns.
3. Sort all but the default element alphabetically.
4. Remove XXX comments pointing out entries not needed.
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Sat Sep 27 13:39:20 1997 UTC (14 years, 4 months ago) by kato
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Diff to: previous 1.42: preferred, colored
Changes since revision 1.42: +7 -4 lines
Clustered read and write are switched at mount-option level. 1. Clustered I/O is switched by the MNT_NOCLUSTERR and MNT_NOCLUSTERW bits of the mnt_flag. The sysctl variables, vfs.foo.doclusterread and vfs.foo.doclusterwrite are deleted. Only mount option can control clustered I/O from userland. 2. When foofs_mount mounts block device, foofs_mount checks D_CLUSTERR and D_CLUSTERW bits of the d_flags member in the block device switch table. If D_NOCLUSTERR / D_NOCLUSTERW are set, MNT_NOCLUSTERR / MNT_NOCLUSTERW bits will be set. In this case, MNT_NOCLUSTERR and MNT_NOCLUSTERW cannot be cleared from userland. 3. Vnode driver disables both clustered read and write. 4. Union filesystem disables clutered write. Reviewed by: bde
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Sun Sep 14 02:58:02 1997 UTC (14 years, 4 months ago) by peter
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Diff to: previous 1.41: preferred, colored
Changes since revision 1.41: +14 -11 lines
Convert select -> poll. Delete 'always succeed' select/poll handlers, replaced with generic call. Flag missing vnode op table entries.
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Tue Sep 2 20:06:12 1997 UTC (14 years, 5 months ago) by bde
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Diff to: previous 1.40: preferred, colored
Changes since revision 1.40: +1 -4 lines
Removed unused #includes.
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Thu May 29 13:29:13 1997 UTC (14 years, 8 months ago) by tegge
Branches: MAIN
CVS tags: WOLLMAN_MBUF, BP_WOLLMAN_MBUF
Diff to: previous 1.39: preferred, colored
Changes since revision 1.39: +2 -1 lines
Don't remove the controlling tty from the session if the vnode is being cleaned. This should help for PR kern/3581.
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Thu May 1 19:12:22 1997 UTC (14 years, 9 months ago) by sos
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Diff to: previous 1.38: preferred, colored
Changes since revision 1.38: +10 -3 lines
Remove the dependancy on DEV_BSIZE, now specfs works on != 512byte sector devices given that the fs uses a blocksize of at least a physical sector size.
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Mon Mar 24 11:24:44 1997 UTC (14 years, 10 months ago) by bde
Branches: MAIN
CVS tags: pre_smp_merge, post_smp_merge
Diff to: previous 1.37: preferred, colored
Changes since revision 1.37: +1 -2 lines
Don't include <sys/ioctl.h> in the kernel. Stage 1: don't include it when it is not used. In most cases, the reasons for including it went away when the special ioctl headers became self-sufficient.
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Sat Feb 22 09:40:34 1997 UTC (14 years, 11 months ago) by peter
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Diff to: previous 1.36: preferred, colored
Changes since revision 1.36: +1 -1 lines
Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not ready for it yet.
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Mon Feb 10 02:15:06 1997 UTC (15 years ago) by dyson
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Diff to: previous 1.35: preferred, colored
Changes since revision 1.35: +48 -43 lines
This is the kernel Lite/2 commit. There are some requisite userland changes, so don't expect to be able to run the kernel as-is (very well) without the appropriate Lite/2 userland changes. The system boots and can mount UFS filesystems. Untested: ext2fs, msdosfs, NFS Known problems: Incorrect Berkeley ID strings in some files. Mount_std mounts will not work until the getfsent library routine is changed. Reviewed by: various people Submitted by: Jeffery Hsu <hsu@freebsd.org>
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Tue Jan 14 06:46:47 1997 UTC (15 years ago) by jkh
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Diff to: previous 1.34: preferred, colored
Changes since revision 1.34: +1 -1 lines
Make the long-awaited change from $Id$ to $FreeBSD$ This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
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Thu Dec 19 18:16:33 1996 UTC (15 years, 1 month ago) by bde
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Diff to: previous 1.33: preferred, colored
Changes since revision 1.33: +2 -2 lines
Fixed errno for unsupported advisory locks. The errno is now EINVAL fcntl() and EOPNOTSUPP for flock(). POSIX specifies the weaker EINVAL errno and the man page agrees. Not fixed: deadfs: always returns wrong EBADF devfs, msdosfs: always return sometimes-wrong EINVAL cd9660, fdesc, kernfs, portal: always return sometimes-wrong EOPNOTSUPP procfs: always returns wrong EIO mfs: panic?! nfs: fudged NetBSD uses a generic file system genfs to do return the sometimes-wrong EOPNOTSUPP more consistently :-)(. Found by: NIST-PCTS
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Sun Oct 6 21:19:33 1996 UTC (15 years, 4 months ago) by dyson
Branches: MAIN
CVS tags: RELENG_2_2_BP, RELENG_2_2_8_RELEASE, RELENG_2_2_7_RELEASE, RELENG_2_2_6_RELEASE, RELENG_2_2_5_RELEASE, RELENG_2_2_2_RELEASE, RELENG_2_2_1_RELEASE, RELENG_2_2_0_RELEASE
Branch point for: RELENG_2_2
Diff to: previous 1.32: preferred, colored
Changes since revision 1.32: +21 -12 lines
Substitution of a long divide by a shift. Other cosmetic improvements. Submitted by: bde
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Tue Sep 3 14:23:21 1996 UTC (15 years, 5 months ago) by bde
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Diff to: previous 1.31: preferred, colored
Changes since revision 1.31: +3 -2 lines
Eliminated nested include of <sys/unistd.h> in <sys/file.h> in the kernel. Include it directly in the few places where it is used. Reduced some #includes of <sys/file.h> to #includes of <sys/fcntl.h> or nothing.
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Wed Aug 21 21:55:33 1996 UTC (15 years, 5 months ago) by dyson
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Diff to: previous 1.30: preferred, colored
Changes since revision 1.30: +7 -2 lines
Even though this looks like it, this is not a complex code change. The interface into the "VMIO" system has changed to be more consistant and robust. Essentially, it is now no longer necessary to call vn_open to get merged VM/Buffer cache operation, and exceptional conditions such as merged operation of VBLK devices is simpler and more correct. This code corrects a potentially large set of problems including the problems with ktrace output and loaded systems, file create/deletes, etc. Most of the changes to NFS are cosmetic and name changes, eliminating a layer of subroutine calls. The direct calls to vput/vrele have been re-instituted for better cross platform compatibility. Reviewed by: davidg
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Sat Jul 27 03:50:31 1996 UTC (15 years, 6 months ago) by dyson
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Diff to: previous 1.29: preferred, colored
Changes since revision 1.29: +1 -2 lines
Remove a totally unneeded (and as of the last VM commit, incorrect) call to pmap_clear_modify.
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Tue Mar 19 05:13:17 1996 UTC (15 years, 10 months ago) by dyson
Branches: MAIN
CVS tags: wollman_polling
Diff to: previous 1.28: preferred, colored
Changes since revision 1.28: +3 -2 lines
Fix the problem that unmounting filesystems that are backed by a VMIO device have reference count problems. We mark the underlying object ono-persistent, and account for the reference count that the VM system maintainsfor the special device close. This should fix the removable device problem.
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Mon Mar 11 19:29:15 1996 UTC (15 years, 11 months ago) by peter
Branches: CSRG
CVS tags: bsd_44_lite_2
Diff to: previous 1.1.1.1: preferred, colored
Changes since revision 1.1.1.1: +34 -37 lines
Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all files are off the vendor branch, so this should not change anything. A "U" marker generally means that the file was not changed in between the 4.4Lite and Lite-2 releases, and does not need a merge. "C" generally means that there was a change. [two new auxillary files in miscfs/union]
Revision 1.28: download - view: text, markup, annotated - select for diffs
Sat Mar 9 07:02:52 1996 UTC (15 years, 11 months ago) by dyson
Branches: MAIN
Diff to: previous 1.27: preferred, colored
Changes since revision 1.27: +2 -1 lines
Make sure that the zero flag is cleared upon completion of paging I/O.
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Mon Jan 1 20:20:45 1996 UTC (16 years, 1 month ago) by phk
Branches: MAIN
Diff to: previous 1.26: preferred, colored
Changes since revision 1.26: +7 -1 lines
I have some problem here, which shows up in the ahc0 driver. It isn't where it originates, so I catch it here and fail. This may expose the same bug on other disk controllers (both scsi & ide).
Revision 1.26: download - view: text, markup, annotated - select for diffs
Thu Dec 14 09:53:06 1995 UTC (16 years, 2 months ago) by phk
Branches: MAIN
Diff to: previous 1.25: preferred, colored
Changes since revision 1.25: +5 -2 lines
Another mega commit to staticize things.
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Wed Dec 13 15:13:31 1995 UTC (16 years, 2 months ago) by julian
Branches: MAIN
Diff to: previous 1.24: preferred, colored
Changes since revision 1.24: +17 -17 lines
devsw tables are now arrays of POINTERS to struct [cb]devsw seems to work hre just fine though I can't check every file that changed due to limmited h/w, however I've checked enught to be petty happy withe hte code.. WARNING... struct lkm[mumble] has changed so it might be an idea to recompile any lkm related programs
Revision 1.24: download - view: text, markup, annotated - select for diffs
Mon Dec 11 09:24:50 1995 UTC (16 years, 2 months ago) by phk
Branches: MAIN
Diff to: previous 1.23: preferred, colored
Changes since revision 1.23: +4 -4 lines
Staticize.
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Mon Dec 11 04:56:41 1995 UTC (16 years, 2 months ago) by dyson
Branches: MAIN
Diff to: previous 1.22: preferred, colored
Changes since revision 1.22: +34 -3 lines
Changes to support 1Tb filesizes. Pages are now named by an (object,index) pair instead of (object,offset) pair.
Revision 1.22: download - view: text, markup, annotated - select for diffs
Fri Dec 8 11:17:52 1995 UTC (16 years, 2 months ago) by julian
Branches: MAIN
Diff to: previous 1.21: preferred, colored
Changes since revision 1.21: +1 -5 lines
Pass 3 of the great devsw changes most devsw referenced functions are now static, as they are in the same file as their devsw structure. I've also added DEVFS support for nearly every device in the system, however many of the devices have 'incorrect' names under DEVFS because I couldn't quickly work out the correct naming conventions. (but devfs won't be coming on line for a month or so anyhow so that doesn't matter) If you "OWN" a device which would normally have an entry in /dev then search for the devfs_add_devsw() entries and munge to make them right.. check out similar devices to see what I might have done in them in you can't see what's going on.. for a laugh compare conf.c conf.h defore and after... :) I have not doen DEVFS entries for any DISKSLICE devices yet as that will be a much more complicated job.. (pass 5 :) pass 4 will be to make the devsw tables of type (cdevsw * ) rather than (cdevsw) seems to work here.. complaints to the usual places.. :)
Revision 1.21: download - view: text, markup, annotated - select for diffs
Thu Dec 7 12:47:17 1995 UTC (16 years, 2 months ago) by davidg
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Diff to: previous 1.20: preferred, colored
Changes since revision 1.20: +5 -1 lines
Untangled the vm.h include file spaghetti.
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Tue Dec 5 21:51:45 1995 UTC (16 years, 2 months ago) by bde
Branches: MAIN
Diff to: previous 1.19: preferred, colored
Changes since revision 1.19: +2 -1 lines
Include <vm/vm.h> or <vm/vm_page.h> explicitly to avoid breaking when vnode_if.h doesn't include vm stuff.
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Wed Nov 29 12:38:49 1995 UTC (16 years, 2 months ago) by julian
Branches: MAIN
Diff to: previous 1.18: preferred, colored
Changes since revision 1.18: +9 -1 lines
#ifdef out nearly the entire file of conf.c when JREMOD is defined add a few safety checks in specfs because now it's possible to get entries in [cd]devsw[] which are ALL NULL so it's better to discover this BEFORE jumping into the d_open() entry.. more check to come later.. this getsthe code to the stage where I can start testing it, even if I haven't caught every little error case... I guess I'll find them quick enough..
Revision 1.18: download - view: text, markup, annotated - select for diffs
Sat Nov 18 12:49:14 1995 UTC (16 years, 2 months ago) by bde
Branches: MAIN
Diff to: previous 1.17: preferred, colored
Changes since revision 1.17: +43 -43 lines
KNFized spec_getpages_idone() and spec_getpages(). Moved misplaced #includes. Completed function pointer declarations.
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Thu Nov 9 08:16:15 1995 UTC (16 years, 3 months ago) by bde
Branches: MAIN
Diff to: previous 1.16: preferred, colored
Changes since revision 1.16: +45 -45 lines
Introduced a type `vop_t' for vnode operation functions and used it 1138 times (:-() in casts and a few more times in declarations. This change is null for the i386. The type has to be `typedef int vop_t(void *)' and not `typedef int vop_t()' because `gcc -Wstrict-prototypes' warns about the latter. Since vnode op functions are called with args of different (struct pointer) types, neither of these function types is any use for type checking of the arg, so it would be preferable not to use the complete function type, especially since using the complete type requires adding 1138 casts to avoid compiler warnings and another 40+ casts to reverse the function pointer conversions before calling the functions.
Revision 1.16: download - view: text, markup, annotated - select for diffs
Mon Oct 23 02:22:47 1995 UTC (16 years, 3 months ago) by dyson
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Diff to: previous 1.15: preferred, colored
Changes since revision 1.15: +125 -1 lines
Finalize GETPAGES layering scheme. Move the device GETPAGES interface into specfs code. No need at this point to modify the PUTPAGES stuff except in the layered-type (NULL/UNION) filesystems.
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Fri Oct 6 09:47:58 1995 UTC (16 years, 4 months ago) by phk
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Diff to: previous 1.14: preferred, colored
Changes since revision 1.14: +5 -5 lines
Avoid some 64bit divides.
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Mon Sep 4 00:20:37 1995 UTC (16 years, 5 months ago) by dyson
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Diff to: previous 1.13: preferred, colored
Changes since revision 1.13: +5 -1 lines
Added VOP_GETPAGES/VOP_PUTPAGES and also the "backwards" block count for VOP_BMAP. Updated affected filesystems...
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Sat Jul 29 11:40:31 1995 UTC (16 years, 6 months ago) by bde
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Diff to: previous 1.12: preferred, colored
Changes since revision 1.12: +2 -10 lines
Eliminate sloppy common-style declarations. There should be none left for the LINT configuation.
Revision 1.11.4.1: download - view: text, markup, annotated - select for diffs
Sat Jul 8 04:11:55 1995 UTC (16 years, 7 months ago) by davidg
Branches: RELENG_2_1_0
CVS tags: RELENG_2_1_7_RELEASE, RELENG_2_1_6_RELEASE, RELENG_2_1_6_1_RELEASE, RELENG_2_1_5_RELEASE, RELENG_2_1_0_RELEASE
Diff to: previous 1.11: preferred, colored
Changes since revision 1.11: +2 -1 lines
(2.1.0 branch) Bring in change from rev 1.12: add missing splx.
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Sat Jul 8 04:03:12 1995 UTC (16 years, 7 months ago) by davidg
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Diff to: previous 1.11: preferred, colored
Changes since revision 1.11: +2 -1 lines
Added missing splx() in DIAGNOSTIC code. Suggested by enami@sys.ptg.sony.co.jp.
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Sun Apr 9 06:03:10 1995 UTC (16 years, 10 months ago) by davidg
Branches: MAIN
CVS tags: RELENG_2_1_0_BP, RELENG_2_0_5_RELEASE, RELENG_2_0_5_BP, RELENG_2_0_5_ALPHA, RELENG_2_0_5
Branch point for: RELENG_2_1_0
Diff to: previous 1.10: preferred, colored
Changes since revision 1.10: +2 -2 lines
Changes from John Dyson and myself: 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.
Revision 1.10: download - view: text, markup, annotated - select for diffs
Fri Feb 3 06:46:21 1995 UTC (17 years ago) by davidg
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Diff to: previous 1.9: preferred, colored
Changes since revision 1.9: +3 -1 lines
Fixed bmap run-length brokeness. Use bmap run-length extension when doing clustered paging. Submitted by: John Dyson
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Mon Nov 14 13:22:52 1994 UTC (17 years, 3 months ago) by bde
Branches: MAIN
CVS tags: RELEASE_2_0, OLAH_TTCP, BETA_2_0
Diff to: previous 1.8: preferred, colored
Changes since revision 1.8: +1 -2 lines
Undo a previous change. <sys/disklabel.h> was broken, not these files.
Revision 1.8: download - view: text, markup, annotated - select for diffs
Fri Oct 28 12:41:59 1994 UTC (17 years, 3 months ago) by jkh
Branches: MAIN
CVS tags: ALPHA_2_0
Diff to: previous 1.7: preferred, colored
Changes since revision 1.7: +2 -1 lines
From: fredriks@mcs.com (Lars Fredriksen) ... It turns out that these files do not include <sys/dkbad.h> before <sys/disklabel.h>. Submitted by: fredriks
Revision 1.7: download - view: text, markup, annotated - select for diffs
Mon Oct 10 07:55:41 1994 UTC (17 years, 4 months ago) by phk
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Diff to: previous 1.6: preferred, colored
Changes since revision 1.6: +7 -3 lines
Cosmetics. reduce the noise from gcc -Wall.
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Thu Oct 6 21:06:46 1994 UTC (17 years, 4 months ago) by davidg
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Diff to: previous 1.5: preferred, colored
Changes since revision 1.5: +2 -2 lines
Use tsleep() rather than sleep so that 'ps' is more informative about the wait.
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Wed Sep 21 03:47:09 1994 UTC (17 years, 4 months ago) by wollman
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Diff to: previous 1.4: preferred, colored
Changes since revision 1.4: +3 -1 lines
Implemented loadable VFS modules, and made most existing filesystems loadable. (NFS is a notable exception.)
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Mon Aug 8 09:11:36 1994 UTC (17 years, 6 months ago) by davidg
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Diff to: previous 1.3: preferred, colored
Changes since revision 1.3: +1 -4 lines
Changed B_AGE policy to work correctly in a world with relatively large buffer caches. The old policy generally ended up caching nothing.
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Tue Aug 2 07:45:27 1994 UTC (17 years, 6 months ago) by davidg
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Diff to: previous 1.2: preferred, colored
Changes since revision 1.2: +1 -0 lines
Added $Id$
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Wed May 25 09:08:50 1994 UTC (17 years, 8 months ago) by rgrimes
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Diff to: previous 1.1: preferred, colored
Changes since revision 1.1: +16 -0 lines
The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch. Reviewed by: Rodney W. Grimes Submitted by: John Dyson and David Greenman
Revision 1.1.1.1 (vendor branch): download - view: text, markup, annotated - select for diffs
Tue May 24 10:05:13 1994 UTC (17 years, 8 months ago) by rgrimes
Branches: CSRG
CVS tags: bsd_44_lite, REL_before_johndavid_2_0_0
Diff to: previous 1.1: preferred, colored
Changes since revision 1.1: +0 -0 lines
BSD 4.4 Lite Kernel Sources
Revision 1.1: download - view: text, markup, annotated - select for diffs
Tue May 24 10:05:12 1994 UTC (17 years, 8 months ago) by rgrimes
Branches: MAIN
Initial revision