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Modify vnode locking key: the v_pollinfo pointer itself is protected

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by Giant; the contents are protected by the pollinfo mutex.  We rely
on Giant to prevent races in assigning the value of v_pollinfo.
This commit is contained in:
rwatson 2004-08-10 23:52:45 +00:00
parent 61273fea02
commit bea97d03fe
1 changed files with 2 additions and 1 deletions
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3
sys/sys/vnode.h
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@ -82,6 +82,7 @@ struct vpollinfo {
* Lock reference:
* c - namecache mutex
* f - freelist mutex
* G - Giant
* i - interlock
* m - mntvnodes mutex
* p - pollinfo lock
@ -147,7 +148,7 @@ struct vnode {
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 vpollinfo *v_pollinfo; /* G Poll events, p for *v_pi */
struct label *v_label; /* MAC label for vnode */
#ifdef DEBUG_LOCKS
const char *filename; /* Source file doing locking */