freebsd-dev/sys/fs/pseudofs
Kirk McKusick a5b65058d5 Regularize the vop_stdlock'ing protocol across all the filesystems
that use it. Specifically, vop_stdlock uses the lock pointed to by
vp->v_vnlock. By default, getnewvnode sets up vp->v_vnlock to
reference vp->v_lock. Filesystems that wish to use the default
do not need to allocate a lock at the front of their node structure
(as some still did) or do a lockinit. They can simply start using
vn_lock/VOP_UNLOCK. Filesystems that wish to manage their own locks,
but still use the vop_stdlock functions (such as nullfs) can simply
replace vp->v_vnlock with a pointer to the lock that they wish to
have used for the vnode. Such filesystems are responsible for
setting the vp->v_vnlock back to the default in their vop_reclaim
routine (e.g., vp->v_vnlock = &vp->v_lock).

In theory, this set of changes cleans up the existing filesystem
lock interface and should have no function change to the existing
locking scheme.

Sponsored by:	DARPA & NAI Labs.
2002-10-14 03:20:36 +00:00
..
pseudofs_fileno.c Gratuitous whitespace cleanup. 2002-06-06 16:59:24 +00:00
pseudofs_internal.h [the previous commit to pseudofs_vncache.c got the wrong log message] 2001-10-01 04:26:33 +00:00
pseudofs_vncache.c Regularize the vop_stdlock'ing protocol across all the filesystems 2002-10-14 03:20:36 +00:00
pseudofs_vnops.c - Use vrefcnt() where it is safe to do so instead of doing direct and 2002-09-25 02:32:42 +00:00
pseudofs.c Remove all use of vnode->v_tag, replacing with appropriate substitutes. 2002-09-14 09:02:28 +00:00
pseudofs.h Introduce support for Mandatory Access Control and extensible 2002-08-01 01:33:12 +00:00