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authorJ. Bruce Fields <bfields@citi.umich.edu>2010-12-14 15:05:13 +0000
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-12-16 12:37:26 -0500
commitb10e30f6559978e3c8ca2a70c1cb35d6680a4021 (patch)
treeb084204e36261f72da259ad8da44880623f834fc /fs/lockd/host.c
parentb113746888c260a02f6ae1e92b0b9ef7e9c38993 (diff)
lockd: reorganize nlm_host_rebooted
Minor reorganization; no change in behavior. This will save some duplicated code after we split the client and server host caches. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> [ cel: Forward-ported to 2.6.37 ] Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/lockd/host.c')
-rw-r--r--fs/lockd/host.c58
1 files changed, 34 insertions, 24 deletions
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index cada3a12d55..2dbf1392acf 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -441,6 +441,31 @@ void nlm_release_host(struct nlm_host *host)
}
}
+static struct nlm_host *next_host_state(struct hlist_head *cache,
+ struct nsm_handle *nsm,
+ const struct nlm_reboot *info)
+{
+ struct nlm_host *host = NULL;
+ struct hlist_head *chain;
+ struct hlist_node *pos;
+
+ mutex_lock(&nlm_host_mutex);
+ for_each_host(host, pos, chain, cache) {
+ if (host->h_nsmhandle == nsm
+ && host->h_nsmstate != info->state) {
+ host->h_nsmstate = info->state;
+ host->h_state++;
+
+ nlm_get_host(host);
+ mutex_unlock(&nlm_host_mutex);
+ goto out;
+ }
+ }
+out:
+ mutex_unlock(&nlm_host_mutex);
+ return host;
+}
+
/**
* nlm_host_rebooted - Release all resources held by rebooted host
* @info: pointer to decoded results of NLM_SM_NOTIFY call
@@ -450,8 +475,6 @@ void nlm_release_host(struct nlm_host *host)
*/
void nlm_host_rebooted(const struct nlm_reboot *info)
{
- struct hlist_head *chain;
- struct hlist_node *pos;
struct nsm_handle *nsm;
struct nlm_host *host;
@@ -464,30 +487,17 @@ void nlm_host_rebooted(const struct nlm_reboot *info)
* lock for this.
* To avoid processing a host several times, we match the nsmstate.
*/
-again: mutex_lock(&nlm_host_mutex);
- for_each_host(host, pos, chain, nlm_hosts) {
- if (host->h_nsmhandle == nsm
- && host->h_nsmstate != info->state) {
- host->h_nsmstate = info->state;
- host->h_state++;
-
- nlm_get_host(host);
- mutex_unlock(&nlm_host_mutex);
-
- if (host->h_server) {
- /* We're server for this guy, just ditch
- * all the locks he held. */
- nlmsvc_free_host_resources(host);
- } else {
- /* He's the server, initiate lock recovery. */
- nlmclnt_recovery(host);
- }
-
- nlm_release_host(host);
- goto again;
+ while ((host = next_host_state(nlm_hosts, nsm, info)) != NULL) {
+ if (host->h_server) {
+ /* We're server for this guy, just ditch
+ * all the locks he held. */
+ nlmsvc_free_host_resources(host);
+ } else {
+ /* He's the server, initiate lock recovery. */
+ nlmclnt_recovery(host);
}
+ nlm_release_host(host);
}
- mutex_unlock(&nlm_host_mutex);
nsm_release(nsm);
}