lockd: Pass "struct sockaddr *" to new failover-by-IP function
Pass a more generic socket address type to nlmsvc_unlock_all_by_ip() to
allow for future support of IPv6. Also provide additional sanity
checking in failover_unlock_ip() when constructing the server's IP
address.
As an added bonus, provide clean kerneldoc comments on related NLM
interfaces which were recently added.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index d1c48b5..198b4e5 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -373,13 +373,16 @@
}
}
-/*
- * Remove all locks held for clients
+/**
+ * nlmsvc_invalidate_all - remove all locks held for clients
+ *
+ * Release all locks held by NFS clients.
+ *
*/
void
nlmsvc_invalidate_all(void)
{
- /* Release all locks held by NFS clients.
+ /*
* Previously, the code would call
* nlmsvc_free_host_resources for each client in
* turn, which is about as inefficient as it gets.
@@ -396,6 +399,12 @@
return sb == file->f_file->f_path.mnt->mnt_sb;
}
+/**
+ * nlmsvc_unlock_all_by_sb - release locks held on this file system
+ * @sb: super block
+ *
+ * Release all locks held by clients accessing this file system.
+ */
int
nlmsvc_unlock_all_by_sb(struct super_block *sb)
{
@@ -409,17 +418,22 @@
static int
nlmsvc_match_ip(void *datap, struct nlm_host *host)
{
- __be32 *server_addr = datap;
-
- return host->h_saddr.sin_addr.s_addr == *server_addr;
+ return nlm_cmp_addr(&host->h_saddr, datap);
}
+/**
+ * nlmsvc_unlock_all_by_ip - release local locks by IP address
+ * @server_addr: server's IP address as seen by clients
+ *
+ * Release all locks held by clients accessing this host
+ * via the passed in IP address.
+ */
int
-nlmsvc_unlock_all_by_ip(__be32 server_addr)
+nlmsvc_unlock_all_by_ip(struct sockaddr *server_addr)
{
int ret;
- ret = nlm_traverse_files(&server_addr, nlmsvc_match_ip, NULL);
- return ret ? -EIO : 0;
+ ret = nlm_traverse_files(server_addr, nlmsvc_match_ip, NULL);
+ return ret ? -EIO : 0;
}
EXPORT_SYMBOL_GPL(nlmsvc_unlock_all_by_ip);