diff options
author | Kirk McKusick <mckusick@FreeBSD.org> | 2002-10-14 03:20:36 +0000 |
---|---|---|
committer | Kirk McKusick <mckusick@FreeBSD.org> | 2002-10-14 03:20:36 +0000 |
commit | a5b65058d5e43141777953576267ecf12476e715 (patch) | |
tree | 002d16cf963ee442c7680ba065d71a690c88783a /sys/fs/hpfs | |
parent | aa23e9c476813cd08274aa3c321c9469ab1f4383 (diff) | |
download | src-a5b65058d5e43141777953576267ecf12476e715.tar.gz src-a5b65058d5e43141777953576267ecf12476e715.zip |
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.
Notes
Notes:
svn path=/head/; revision=105077
Diffstat (limited to 'sys/fs/hpfs')
-rw-r--r-- | sys/fs/hpfs/hpfs.h | 1 | ||||
-rw-r--r-- | sys/fs/hpfs/hpfs_vfsops.c | 1 | ||||
-rw-r--r-- | sys/fs/hpfs/hpfs_vnops.c | 1 |
3 files changed, 0 insertions, 3 deletions
diff --git a/sys/fs/hpfs/hpfs.h b/sys/fs/hpfs/hpfs.h index 9a28562a9108..9b4fd1dfef34 100644 --- a/sys/fs/hpfs/hpfs.h +++ b/sys/fs/hpfs/hpfs.h @@ -333,7 +333,6 @@ struct hpfsmount { #define H_PARCHANGE 0x0008 /* parent node date was changed */ #define H_INVAL 0x0010 /* Invalid node */ struct hpfsnode { - struct lock h_lock; /* Must be first, for std vops */ struct mtx h_interlock; LIST_ENTRY(hpfsnode) h_hash; diff --git a/sys/fs/hpfs/hpfs_vfsops.c b/sys/fs/hpfs/hpfs_vfsops.c index a85a2a2ef113..a4e1bb87b030 100644 --- a/sys/fs/hpfs/hpfs_vfsops.c +++ b/sys/fs/hpfs/hpfs_vfsops.c @@ -512,7 +512,6 @@ hpfs_vget( mtx_init(&hp->h_interlock, "hpfsnode interlock", NULL, MTX_DEF); - lockinit(&hp->h_lock, PINOD, "hpnode", VLKTIMEOUT, 0); hp->h_flag = H_INVAL; hp->h_vp = vp; diff --git a/sys/fs/hpfs/hpfs_vnops.c b/sys/fs/hpfs/hpfs_vnops.c index 30a788d82d61..5f144a8d9c72 100644 --- a/sys/fs/hpfs/hpfs_vnops.c +++ b/sys/fs/hpfs/hpfs_vnops.c @@ -643,7 +643,6 @@ hpfs_reclaim(ap) hp->h_devvp = NULL; } - lockdestroy(&hp->h_lock); mtx_destroy(&hp->h_interlock); vp->v_data = NULL; |