eCryptfs: Fix oops when printing debug info in extent crypto functions

[cascardo/linux.git] / fs / block_dev.c

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 69a5b6f..0e575d1 100644 (file)
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -25,7 +25,6 @@
 #include <linux/uio.h>
 #include <linux/namei.h>
 #include <linux/log2.h>
-#include <linux/kmemleak.h>
 #include <linux/cleancache.h>
 #include <asm/uaccess.h>
 #include "internal.h"
@@ -521,7 +520,7 @@ static struct super_block *blockdev_superblock __read_mostly;
 void __init bdev_cache_init(void)
 {
        int err;
-       struct vfsmount *bd_mnt;
+       static struct vfsmount *bd_mnt;
 
        bdev_cachep = kmem_cache_create("bdev_cache", sizeof(struct bdev_inode),
                        0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
@@ -533,12 +532,7 @@ void __init bdev_cache_init(void)
        bd_mnt = kern_mount(&bd_type);
        if (IS_ERR(bd_mnt))
                panic("Cannot create bdev pseudo-fs");
-       /*
-        * This vfsmount structure is only used to obtain the
-        * blockdev_superblock, so tell kmemleak not to report it.
-        */
-       kmemleak_not_leak(bd_mnt);
-       blockdev_superblock = bd_mnt->mnt_sb;   /* For writeback */
+       blockdev_superblock = bd_mnt->mnt_sb;   /* For writeback */
 }
 
 /*
@@ -1145,6 +1139,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
        mutex_lock_nested(&bdev->bd_mutex, for_part);
        if (!bdev->bd_openers) {
                bdev->bd_disk = disk;
+               bdev->bd_queue = disk->queue;
                bdev->bd_contains = bdev;
                if (!partno) {
                        struct backing_dev_info *bdi;
@@ -1165,6 +1160,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
                                        disk_put_part(bdev->bd_part);
                                        bdev->bd_part = NULL;
                                        bdev->bd_disk = NULL;
+                                       bdev->bd_queue = NULL;
                                        mutex_unlock(&bdev->bd_mutex);
                                        disk_unblock_events(disk);
                                        put_disk(disk);
@@ -1238,6 +1234,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
        disk_put_part(bdev->bd_part);
        bdev->bd_disk = NULL;
        bdev->bd_part = NULL;
+       bdev->bd_queue = NULL;
        bdev_inode_switch_bdi(bdev->bd_inode, &default_backing_dev_info);
        if (bdev != bdev->bd_contains)
                __blkdev_put(bdev->bd_contains, mode, 1);