Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[uclinux-h8/linux.git] / fs / block_dev.c

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 12b22dd..1982437 100644 (file)
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -14,6 +14,7 @@
 #include <linux/device_cgroup.h>
 #include <linux/highmem.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/module.h>
 #include <linux/blkpg.h>
 #include <linux/magic.h>
@@ -42,7 +43,7 @@ static inline struct bdev_inode *BDEV_I(struct inode *inode)
        return container_of(inode, struct bdev_inode, vfs_inode);
 }
 
-inline struct block_device *I_BDEV(struct inode *inode)
+struct block_device *I_BDEV(struct inode *inode)
 {
        return &BDEV_I(inode)->bdev;
 }
@@ -379,7 +380,7 @@ int bdev_read_page(struct block_device *bdev, sector_t sector,
                        struct page *page)
 {
        const struct block_device_operations *ops = bdev->bd_disk->fops;
-       if (!ops->rw_page)
+       if (!ops->rw_page || bdev_get_integrity(bdev))
                return -EOPNOTSUPP;
        return ops->rw_page(bdev, sector + get_start_sect(bdev), page, READ);
 }
@@ -410,7 +411,7 @@ int bdev_write_page(struct block_device *bdev, sector_t sector,
        int result;
        int rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE;
        const struct block_device_operations *ops = bdev->bd_disk->fops;
-       if (!ops->rw_page)
+       if (!ops->rw_page || bdev_get_integrity(bdev))
                return -EOPNOTSUPP;
        set_page_writeback(page);
        result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, rw);
@@ -555,7 +556,8 @@ static struct file_system_type bd_type = {
        .kill_sb        = kill_anon_super,
 };
 
-static struct super_block *blockdev_superblock __read_mostly;
+struct super_block *blockdev_superblock __read_mostly;
+EXPORT_SYMBOL_GPL(blockdev_superblock);
 
 void __init bdev_cache_init(void)
 {
@@ -696,11 +698,6 @@ static struct block_device *bd_acquire(struct inode *inode)
        return bdev;
 }
 
-int sb_is_blkdev_sb(struct super_block *sb)
-{
-       return sb == blockdev_superblock;
-}
-
 /* Call when you free inode */
 
 void bd_forget(struct inode *inode)