src/sys/dev/vn, branch release/4.6.2_cvs

This commit was manufactured by cvs2svn to create tag

2002-08-14T06:57:09Z

'RELENG_4_6_2_RELEASE'. This commit was manufactured to restore the state of the 4.6.2-RELEASE image. Releases prior to 5.3-RELEASE are omitting the secure/ and crypto/ subdirs.

MFC B_NOWDRAIN. This required moving B_AUTOCHAINDONE from flags to xflags

2001-11-18T07:11:00Z

(B_ -> BX_). Modify the VN device to use IO_NOWDRAIN (MFC from similar change in -current's MD device).

Fix a long standing (since '94) error in VN related to file-backed VN

2001-11-09T03:42:28Z

devices. The VOP_ISLOCKED() call was completely bogus and could cause the VN device to issue VOP_READ() and VOP_WRITE() calls without obtaining the vnode lock if another process (e.g. like the buf_daemon or syncer) was holding the lock. This could potentially result in a corrupt filesystem. (MD in -current already does the right thing).

Clean up properly when a `vn' module is kldunloaded to avoid panics

2001-03-26T16:58:47Z

later. We now call cdesw_remove() to unregister the device, NULL out any pointers to the vn_softc that exist in dev_t `si_drv1' fields, and perform a destroy_dev() corresponding to the initial make_dev(). This is not an MFC; vn(4) is no longer in -current. PR: kern/18270, i386/26049 Submitted by: peter.edwards@ireland.com, chervarium@nove.bg Reviewed by: phk Approved by: jkh

MFC 1.112, zero out uio structure to avoid garbage pointers.

2000-05-15T16:50:33Z

Tested by: "Sean O'Connell"

Fix a panic when doing non-multiples of PAGE_SIZE or misaligned transfers

1999-12-28T07:32:34Z

to a swap backed vn device. OK'ed by: dillon

Introduce NDFREE (and remove VOP_ABORTOP)

1999-12-15T23:02:35Z

Lock reporting and assertion changes.

1999-12-11T16:13:02Z

* lockstatus() and VOP_ISLOCKED() gets a new process argument and a new return value: LK_EXCLOTHER, when the lock is held exclusively by another process. * The ASSERT_VOP_(UN)LOCKED family is extended to use what this gives them * Extend the vnode_if.src format to allow more exact specification than locked/unlocked. This commit should not do any semantic changes unless you are using DEBUG_VFS_LOCKS. Discussed with: grog, mch, peter, phk Reviewed by: peter

Remove the devsw magic from DEV_MODULE()

1999-11-07T10:01:17Z

useracc() the prequel:

1999-10-29T18:09:36Z

Merge the contents (less some trivial bordering the silly comments) of and into . 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.