Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...

[linux-2.6] / fs / lockd / svcsubs.c

diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index 1adcf93cb6e6f21f4af47248d3d96af8f1167225..d1c48b539df8723bd8979e502448eee35d4f9adf 100644 (file)
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -196,6 +196,12 @@ again:
        return 0;
 }
 
+static int
+nlmsvc_always_match(void *dummy1, struct nlm_host *dummy2)
+{
+       return 1;
+}
+
 /*
  * Inspect a single file
  */
@@ -232,7 +238,8 @@ nlm_file_inuse(struct nlm_file *file)
  * Loop over all files in the file table.
  */
 static int
-nlm_traverse_files(void *data, nlm_host_match_fn_t match)
+nlm_traverse_files(void *data, nlm_host_match_fn_t match,
+               int (*is_failover_file)(void *data, struct nlm_file *file))
 {
        struct hlist_node *pos, *next;
        struct nlm_file *file;
@@ -241,6 +248,8 @@ nlm_traverse_files(void *data, nlm_host_match_fn_t match)
        mutex_lock(&nlm_file_mutex);
        for (i = 0; i < FILE_NRHASH; i++) {
                hlist_for_each_entry_safe(file, pos, next, &nlm_files[i], f_list) {
+                       if (is_failover_file && !is_failover_file(data, file))
+                               continue;
                        file->f_count++;
                        mutex_unlock(&nlm_file_mutex);
 
@@ -345,7 +354,7 @@ void
 nlmsvc_mark_resources(void)
 {
        dprintk("lockd: nlmsvc_mark_resources\n");
-       nlm_traverse_files(NULL, nlmsvc_mark_host);
+       nlm_traverse_files(NULL, nlmsvc_mark_host, NULL);
 }
 
 /*
@@ -356,7 +365,7 @@ nlmsvc_free_host_resources(struct nlm_host *host)
 {
        dprintk("lockd: nlmsvc_free_host_resources\n");
 
-       if (nlm_traverse_files(host, nlmsvc_same_host)) {
+       if (nlm_traverse_files(host, nlmsvc_same_host, NULL)) {
                printk(KERN_WARNING
                        "lockd: couldn't remove all locks held by %s\n",
                        host->h_name);
@@ -376,8 +385,26 @@ nlmsvc_invalidate_all(void)
         * turn, which is about as inefficient as it gets.
         * Now we just do it once in nlm_traverse_files.
         */
-       nlm_traverse_files(NULL, nlmsvc_is_client);
+       nlm_traverse_files(NULL, nlmsvc_is_client, NULL);
+}
+
+static int
+nlmsvc_match_sb(void *datap, struct nlm_file *file)
+{
+       struct super_block *sb = datap;
+
+       return sb == file->f_file->f_path.mnt->mnt_sb;
+}
+
+int
+nlmsvc_unlock_all_by_sb(struct super_block *sb)
+{
+       int ret;
+
+       ret = nlm_traverse_files(sb, nlmsvc_always_match, nlmsvc_match_sb);
+       return ret ? -EIO : 0;
 }
+EXPORT_SYMBOL_GPL(nlmsvc_unlock_all_by_sb);
 
 static int
 nlmsvc_match_ip(void *datap, struct nlm_host *host)
@@ -391,7 +418,7 @@ int
 nlmsvc_unlock_all_by_ip(__be32 server_addr)
 {
        int ret;
-       ret = nlm_traverse_files(&server_addr, nlmsvc_match_ip);
+       ret = nlm_traverse_files(&server_addr, nlmsvc_match_ip, NULL);
        return ret ? -EIO : 0;
 
 }