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Skip the allocation of the root hold token if the mount already happened.

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This commit is contained in:
Andrew Thompson 2009-03-27 03:52:08 +00:00
parent 393cf853a7
commit d24d45d9a9
1 changed files with 5 additions and 0 deletions
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5
sys/kern/vfs_mount.c
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@ -1357,6 +1357,9 @@ root_mount_hold(const char *identifier)
{ {
struct root_hold_token *h; struct root_hold_token *h;
if (root_mounted())
return (NULL);
h = malloc(sizeof *h, M_DEVBUF, M_ZERO | M_WAITOK); h = malloc(sizeof *h, M_DEVBUF, M_ZERO | M_WAITOK);
h->who = identifier; h->who = identifier;
mtx_lock(&mountlist_mtx); mtx_lock(&mountlist_mtx);
@ -1372,6 +1375,8 @@ void
root_mount_rel(struct root_hold_token *h) root_mount_rel(struct root_hold_token *h)
{ {
if (h == NULL)
return;
mtx_lock(&mountlist_mtx); mtx_lock(&mountlist_mtx);
LIST_REMOVE(h, list); LIST_REMOVE(h, list);
wakeup(&root_holds); wakeup(&root_holds);