vfs: Use const for kernel parser table

[safe/jmp/linux-2.6] / fs / afs / vnode.c

diff --git a/fs/afs/vnode.c b/fs/afs/vnode.c
index 0e37f99..2f05c4f 100644 (file)
--- a/fs/afs/vnode.c
+++ b/fs/afs/vnode.c
@@ -14,6 +14,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
+#include <linux/sched.h>
 #include "internal.h"
 
 #if 0
@@ -175,24 +176,33 @@ static void afs_vnode_deleted_remotely(struct afs_vnode *vnode)
 {
        struct afs_server *server;
 
+       _enter("{%p}", vnode->server);
+
        set_bit(AFS_VNODE_DELETED, &vnode->flags);
 
        server = vnode->server;
-       if (vnode->cb_promised) {
-               spin_lock(&server->cb_lock);
+       if (server) {
                if (vnode->cb_promised) {
-                       rb_erase(&vnode->cb_promise, &server->cb_promises);
-                       vnode->cb_promised = false;
+                       spin_lock(&server->cb_lock);
+                       if (vnode->cb_promised) {
+                               rb_erase(&vnode->cb_promise,
+                                        &server->cb_promises);
+                               vnode->cb_promised = false;
+                       }
+                       spin_unlock(&server->cb_lock);
                }
-               spin_unlock(&server->cb_lock);
-       }
 
-       spin_lock(&vnode->server->fs_lock);
-       rb_erase(&vnode->server_rb, &vnode->server->fs_vnodes);
-       spin_unlock(&vnode->server->fs_lock);
+               spin_lock(&server->fs_lock);
+               rb_erase(&vnode->server_rb, &server->fs_vnodes);
+               spin_unlock(&server->fs_lock);
 
-       vnode->server = NULL;
-       afs_put_server(server);
+               vnode->server = NULL;
+               afs_put_server(server);
+       } else {
+               ASSERT(!vnode->cb_promised);
+       }
+
+       _leave("");
 }
 
 /*
@@ -225,7 +235,7 @@ void afs_vnode_finalise_status_update(struct afs_vnode *vnode,
  */
 static void afs_vnode_status_update_failed(struct afs_vnode *vnode, int ret)
 {
-       _enter("%p,%d", vnode, ret);
+       _enter("{%x:%u},%d", vnode->fid.vid, vnode->fid.vnode, ret);
 
        spin_lock(&vnode->lock);
 
@@ -551,7 +561,7 @@ no_server:
 /*
  * create a hard link
  */
-extern int afs_vnode_link(struct afs_vnode *dvnode, struct afs_vnode *vnode,
+int afs_vnode_link(struct afs_vnode *dvnode, struct afs_vnode *vnode,
                          struct key *key, const char *name)
 {
        struct afs_server *server;
@@ -753,3 +763,264 @@ no_server:
        _leave(" = %ld [cnt %d]", PTR_ERR(server), orig_dvnode->update_cnt);
        return PTR_ERR(server);
 }
+
+/*
+ * write to a file
+ */
+int afs_vnode_store_data(struct afs_writeback *wb, pgoff_t first, pgoff_t last,
+                        unsigned offset, unsigned to)
+{
+       struct afs_server *server;
+       struct afs_vnode *vnode = wb->vnode;
+       int ret;
+
+       _enter("%s{%x:%u.%u},%x,%lx,%lx,%x,%x",
+              vnode->volume->vlocation->vldb.name,
+              vnode->fid.vid,
+              vnode->fid.vnode,
+              vnode->fid.unique,
+              key_serial(wb->key),
+              first, last, offset, to);
+
+       /* this op will fetch the status */
+       spin_lock(&vnode->lock);
+       vnode->update_cnt++;
+       spin_unlock(&vnode->lock);
+
+       do {
+               /* pick a server to query */
+               server = afs_volume_pick_fileserver(vnode);
+               if (IS_ERR(server))
+                       goto no_server;
+
+               _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
+
+               ret = afs_fs_store_data(server, wb, first, last, offset, to,
+                                       &afs_sync_call);
+
+       } while (!afs_volume_release_fileserver(vnode, server, ret));
+
+       /* adjust the flags */
+       if (ret == 0) {
+               afs_vnode_finalise_status_update(vnode, server);
+               afs_put_server(server);
+       } else {
+               afs_vnode_status_update_failed(vnode, ret);
+       }
+
+       _leave(" = %d", ret);
+       return ret;
+
+no_server:
+       spin_lock(&vnode->lock);
+       vnode->update_cnt--;
+       ASSERTCMP(vnode->update_cnt, >=, 0);
+       spin_unlock(&vnode->lock);
+       return PTR_ERR(server);
+}
+
+/*
+ * set the attributes on a file
+ */
+int afs_vnode_setattr(struct afs_vnode *vnode, struct key *key,
+                     struct iattr *attr)
+{
+       struct afs_server *server;
+       int ret;
+
+       _enter("%s{%x:%u.%u},%x",
+              vnode->volume->vlocation->vldb.name,
+              vnode->fid.vid,
+              vnode->fid.vnode,
+              vnode->fid.unique,
+              key_serial(key));
+
+       /* this op will fetch the status */
+       spin_lock(&vnode->lock);
+       vnode->update_cnt++;
+       spin_unlock(&vnode->lock);
+
+       do {
+               /* pick a server to query */
+               server = afs_volume_pick_fileserver(vnode);
+               if (IS_ERR(server))
+                       goto no_server;
+
+               _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
+
+               ret = afs_fs_setattr(server, key, vnode, attr, &afs_sync_call);
+
+       } while (!afs_volume_release_fileserver(vnode, server, ret));
+
+       /* adjust the flags */
+       if (ret == 0) {
+               afs_vnode_finalise_status_update(vnode, server);
+               afs_put_server(server);
+       } else {
+               afs_vnode_status_update_failed(vnode, ret);
+       }
+
+       _leave(" = %d", ret);
+       return ret;
+
+no_server:
+       spin_lock(&vnode->lock);
+       vnode->update_cnt--;
+       ASSERTCMP(vnode->update_cnt, >=, 0);
+       spin_unlock(&vnode->lock);
+       return PTR_ERR(server);
+}
+
+/*
+ * get the status of a volume
+ */
+int afs_vnode_get_volume_status(struct afs_vnode *vnode, struct key *key,
+                               struct afs_volume_status *vs)
+{
+       struct afs_server *server;
+       int ret;
+
+       _enter("%s{%x:%u.%u},%x,",
+              vnode->volume->vlocation->vldb.name,
+              vnode->fid.vid,
+              vnode->fid.vnode,
+              vnode->fid.unique,
+              key_serial(key));
+
+       do {
+               /* pick a server to query */
+               server = afs_volume_pick_fileserver(vnode);
+               if (IS_ERR(server))
+                       goto no_server;
+
+               _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
+
+               ret = afs_fs_get_volume_status(server, key, vnode, vs, &afs_sync_call);
+
+       } while (!afs_volume_release_fileserver(vnode, server, ret));
+
+       /* adjust the flags */
+       if (ret == 0)
+               afs_put_server(server);
+
+       _leave(" = %d", ret);
+       return ret;
+
+no_server:
+       return PTR_ERR(server);
+}
+
+/*
+ * get a lock on a file
+ */
+int afs_vnode_set_lock(struct afs_vnode *vnode, struct key *key,
+                      afs_lock_type_t type)
+{
+       struct afs_server *server;
+       int ret;
+
+       _enter("%s{%x:%u.%u},%x,%u",
+              vnode->volume->vlocation->vldb.name,
+              vnode->fid.vid,
+              vnode->fid.vnode,
+              vnode->fid.unique,
+              key_serial(key), type);
+
+       do {
+               /* pick a server to query */
+               server = afs_volume_pick_fileserver(vnode);
+               if (IS_ERR(server))
+                       goto no_server;
+
+               _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
+
+               ret = afs_fs_set_lock(server, key, vnode, type, &afs_sync_call);
+
+       } while (!afs_volume_release_fileserver(vnode, server, ret));
+
+       /* adjust the flags */
+       if (ret == 0)
+               afs_put_server(server);
+
+       _leave(" = %d", ret);
+       return ret;
+
+no_server:
+       return PTR_ERR(server);
+}
+
+/*
+ * extend a lock on a file
+ */
+int afs_vnode_extend_lock(struct afs_vnode *vnode, struct key *key)
+{
+       struct afs_server *server;
+       int ret;
+
+       _enter("%s{%x:%u.%u},%x",
+              vnode->volume->vlocation->vldb.name,
+              vnode->fid.vid,
+              vnode->fid.vnode,
+              vnode->fid.unique,
+              key_serial(key));
+
+       do {
+               /* pick a server to query */
+               server = afs_volume_pick_fileserver(vnode);
+               if (IS_ERR(server))
+                       goto no_server;
+
+               _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
+
+               ret = afs_fs_extend_lock(server, key, vnode, &afs_sync_call);
+
+       } while (!afs_volume_release_fileserver(vnode, server, ret));
+
+       /* adjust the flags */
+       if (ret == 0)
+               afs_put_server(server);
+
+       _leave(" = %d", ret);
+       return ret;
+
+no_server:
+       return PTR_ERR(server);
+}
+
+/*
+ * release a lock on a file
+ */
+int afs_vnode_release_lock(struct afs_vnode *vnode, struct key *key)
+{
+       struct afs_server *server;
+       int ret;
+
+       _enter("%s{%x:%u.%u},%x",
+              vnode->volume->vlocation->vldb.name,
+              vnode->fid.vid,
+              vnode->fid.vnode,
+              vnode->fid.unique,
+              key_serial(key));
+
+       do {
+               /* pick a server to query */
+               server = afs_volume_pick_fileserver(vnode);
+               if (IS_ERR(server))
+                       goto no_server;
+
+               _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
+
+               ret = afs_fs_release_lock(server, key, vnode, &afs_sync_call);
+
+       } while (!afs_volume_release_fileserver(vnode, server, ret));
+
+       /* adjust the flags */
+       if (ret == 0)
+               afs_put_server(server);
+
+       _leave(" = %d", ret);
+       return ret;
+
+no_server:
+       return PTR_ERR(server);
+}