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- Finish the struct vnode lock annotation.

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- Order fields by what lock is required to access them.
This commit is contained in:
Jeff Roberson 2002-09-25 01:37:25 +00:00
parent 3ef3e7c42b
commit 9a0a3322af
1 changed files with 36 additions and 32 deletions
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68
sys/sys/vnode.h
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@ -85,10 +85,14 @@ struct vpollinfo {
* Reading or writing any of these items requires holding the appropriate lock.
*
* Lock reference:
* c - namecache mutex
* f - freelist mutex
* i - interlock
* m - mntvnodes mutex
* p - pollinfo lock
* s - spechash mutex
* S - syncer mutex
* u - Only a reference to the vnode is needed to read.
* v - vnode lock
*
* XXX Not all fields are locked yet and some fields that are marked are not
@ -99,44 +103,44 @@ struct vnode {
struct mtx v_interlock; /* lock for "i" things */
u_long v_iflag; /* i vnode flags (see below) */
int v_usecount; /* i ref count of users */
int v_writecount; /* i ref count of writers */
long v_numoutput; /* i writes in progress */
struct thread *v_vxproc; /* i thread owning VXLOCK */
int v_holdcnt; /* i page & buffer references */
struct buflists v_cleanblkhd; /* i SORTED clean blocklist */
struct buf *v_cleanblkroot; /* i clean buf splay tree */
struct buflists v_dirtyblkhd; /* i SORTED dirty blocklist */
struct buf *v_dirtyblkroot; /* i dirty buf splay tree */
u_long v_vflag; /* v vnode flags */
u_long v_id; /* capability identifier */
struct mount *v_mount; /* ptr to vfs we are in */
vop_t **v_op; /* vnode operations vector */
int v_writecount; /* v ref count of writers */
struct vm_object *v_object; /* v Place to store VM object */
daddr_t v_lastw; /* v last write (write cluster) */
daddr_t v_cstart; /* v start block of cluster */
daddr_t v_lasta; /* v last allocation (cluster) */
int v_clen; /* v length of current cluster */
union {
struct mount *vu_mountedhere;/* v ptr to mounted vfs (VDIR) */
struct socket *vu_socket; /* v unix ipc (VSOCK) */
struct {
struct specinfo *vu_specinfo; /* v device (VCHR, VBLK) */
SLIST_ENTRY(vnode) vu_specnext; /* s device aliases */
} vu_spec;
struct fifoinfo *vu_fifoinfo; /* v fifo (VFIFO) */
} v_un;
TAILQ_ENTRY(vnode) v_freelist; /* f vnode freelist */
TAILQ_ENTRY(vnode) v_nmntvnodes; /* m vnodes for mount point */
struct buflists v_cleanblkhd; /* SORTED clean blocklist */
struct buf *v_cleanblkroot; /* clean buf splay tree root */
struct buflists v_dirtyblkhd; /* SORTED dirty blocklist */
struct buf *v_dirtyblkroot; /* dirty buf splay tree root */
LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
enum vtype v_type; /* vnode type */
union {
struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
struct socket *vu_socket; /* unix ipc (VSOCK) */
struct {
struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
SLIST_ENTRY(vnode) vu_specnext;
} vu_spec;
struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
} v_un;
daddr_t v_lastw; /* last write (write cluster) */
daddr_t v_cstart; /* start block of cluster */
daddr_t v_lasta; /* last allocation (cluster) */
int v_clen; /* length of current cluster */
struct vm_object *v_object; /* Place to store VM object */
struct lock v_lock; /* used if fs don't have one */
struct lock *v_vnlock; /* pointer to vnode lock */
const char *v_tag; /* type of underlying data */
void *v_data; /* private data for fs */
LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */
TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */
struct vnode *v_dd; /* .. vnode */
u_long v_ddid; /* .. capability identifier */
LIST_ENTRY(vnode) v_synclist; /* S dirty vnode list */
enum vtype v_type; /* u vnode type */
const char *v_tag; /* u type of underlying data */
void *v_data; /* u private data for fs */
struct lock v_lock; /* u used if fs don't have one */
struct lock *v_vnlock; /* u pointer to vnode lock */
vop_t **v_op; /* u vnode operations vector */
struct mount *v_mount; /* u ptr to vfs we are in */
LIST_HEAD(, namecache) v_cache_src; /* c Cache entries from us */
TAILQ_HEAD(, namecache) v_cache_dst; /* c Cache entries to us */
u_long v_id; /* c capability identifier */
struct vnode *v_dd; /* c .. vnode */
u_long v_ddid; /* c .. capability identifier */
struct vpollinfo *v_pollinfo; /* p Poll events */
struct label v_label; /* MAC label for vnode */
#ifdef DEBUG_LOCKS