mm: bdi init hooks

provide BDI constructor/destructor hooks

[akpm@linux-foundation.org: compile fix]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/mm/shmem.c b/mm/shmem.c
index 8a82342a8595..2f039f32031f 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2464,6 +2464,10 @@ static int __init init_tmpfs(void)
 {
         int error;
 
+        error = bdi_init(&shmem_backing_dev_info);
+        if (error)
+                goto out4;
+
         error = init_inodecache();
         if (error)
                 goto out3;
@@ -2488,6 +2492,8 @@ out1:
 out2:
         destroy_inodecache();
 out3:
+        bdi_destroy(&shmem_backing_dev_info);
+out4:
         shm_mnt = ERR_PTR(error);
         return error;
 }