Merge commit 'origin/master' into next

4 files changed, 22 insertions, 12 deletions

diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index c54dad4e6063..a10f2582844f 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -19,6 +19,7 @@
 #include <linux/workqueue.h>
 #include <linux/sched.h>
 #include <linux/fscache.h>
+#include <linux/backing-dev.h>
 
 #include "afs.h"
 #include "afs_vl.h"
@@ -313,6 +314,7 @@ struct afs_volume {
         unsigned short          rjservers;      /* number of servers discarded due to -ENOMEDIUM */
         struct afs_server       *servers[8];    /* servers on which volume resides (ordered) */
         struct rw_semaphore     server_sem;     /* lock for accessing current server */
+        struct backing_dev_info bdi;
 };
 
 /*
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 5e813a816ce4..b3feddc4f7d6 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -138,9 +138,9 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
 {
         struct afs_super_info *super;
         struct vfsmount *mnt;
-        struct page *page = NULL;
+        struct page *page;
         size_t size;
-        char *buf, *devname = NULL, *options = NULL;
+        char *buf, *devname, *options;
         int ret;
 
         _enter("{%s}", mntpt->d_name.name);
@@ -150,22 +150,22 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
         ret = -EINVAL;
         size = mntpt->d_inode->i_size;
         if (size > PAGE_SIZE - 1)
-                goto error;
+                goto error_no_devname;
 
         ret = -ENOMEM;
         devname = (char *) get_zeroed_page(GFP_KERNEL);
         if (!devname)
-                goto error;
+                goto error_no_devname;
 
         options = (char *) get_zeroed_page(GFP_KERNEL);
         if (!options)
-                goto error;
+                goto error_no_options;
 
         /* read the contents of the AFS special symlink */
         page = read_mapping_page(mntpt->d_inode->i_mapping, 0, NULL);
         if (IS_ERR(page)) {
                 ret = PTR_ERR(page);
-                goto error;
+                goto error_no_page;
         }
 
         ret = -EIO;
@@ -196,12 +196,12 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
         return mnt;
 
 error:
-        if (page)
-                page_cache_release(page);
-        if (devname)
-                free_page((unsigned long) devname);
-        if (options)
-                free_page((unsigned long) options);
+        page_cache_release(page);
+error_no_page:
+        free_page((unsigned long) options);
+error_no_options:
+        free_page((unsigned long) devname);
+error_no_devname:
         _leave(" = %d", ret);
         return ERR_PTR(ret);
 }
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 14f6431598ad..e932e5a3a0c1 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -311,6 +311,7 @@ static int afs_fill_super(struct super_block *sb, void *data)
         sb->s_magic             = AFS_FS_MAGIC;
         sb->s_op                = &afs_super_ops;
         sb->s_fs_info           = as;
+        sb->s_bdi               = &as->volume->bdi;
 
         /* allocate the root inode and dentry */
         fid.vid         = as->volume->vid;
diff --git a/fs/afs/volume.c b/fs/afs/volume.c
index a353e69e2391..401eeb21869f 100644
--- a/fs/afs/volume.c
+++ b/fs/afs/volume.c
@@ -106,6 +106,10 @@ struct afs_volume *afs_volume_lookup(struct afs_mount_params *params)
         volume->cell            = params->cell;
         volume->vid             = vlocation->vldb.vid[params->type];
 
+        ret = bdi_setup_and_register(&volume->bdi, "afs", BDI_CAP_MAP_COPY);
+        if (ret)
+                goto error_bdi;
+
         init_rwsem(&volume->server_sem);
 
         /* look up all the applicable server records */
@@ -151,6 +155,8 @@ error:
         return ERR_PTR(ret);
 
 error_discard:
+        bdi_destroy(&volume->bdi);
+error_bdi:
         up_write(&params->cell->vl_sem);
 
         for (loop = volume->nservers - 1; loop >= 0; loop--)
@@ -200,6 +206,7 @@ void afs_put_volume(struct afs_volume *volume)
         for (loop = volume->nservers - 1; loop >= 0; loop--)
                 afs_put_server(volume->servers[loop]);
 
+        bdi_destroy(&volume->bdi);
         kfree(volume);
 
         _leave(" [destroyed]");