nl80211: fix connect keys range check

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

diff --git a/fs/block_dev.c b/fs/block_dev.c
index d012be4..08ae993 100644 (file)
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -249,7 +249,8 @@ struct super_block *freeze_bdev(struct block_device *bdev)
                 * thaw_bdev drops it.
                 */
                sb = get_super(bdev);
-               drop_super(sb);
+               if (sb)
+                       drop_super(sb);
                mutex_unlock(&bdev->bd_fsfreeze_mutex);
                return sb;
        }
@@ -416,7 +417,7 @@ int bdev_read_page(struct block_device *bdev, sector_t sector,
        result = blk_queue_enter(bdev->bd_queue, false);
        if (result)
                return result;
-       result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, READ);
+       result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, false);
        blk_queue_exit(bdev->bd_queue);
        return result;
 }
@@ -445,7 +446,6 @@ int bdev_write_page(struct block_device *bdev, sector_t sector,
                        struct page *page, struct writeback_control *wbc)
 {
        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 || bdev_get_integrity(bdev))
@@ -455,7 +455,7 @@ int bdev_write_page(struct block_device *bdev, sector_t sector,
                return result;
 
        set_page_writeback(page);
-       result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, rw);
+       result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, true);
        if (result)
                end_page_writeback(page);
        else
@@ -614,7 +614,6 @@ static void init_once(void *foo)
 
        memset(bdev, 0, sizeof(*bdev));
        mutex_init(&bdev->bd_mutex);
-       INIT_LIST_HEAD(&bdev->bd_inodes);
        INIT_LIST_HEAD(&bdev->bd_list);
 #ifdef CONFIG_SYSFS
        INIT_LIST_HEAD(&bdev->bd_holder_disks);
@@ -624,24 +623,13 @@ static void init_once(void *foo)
        mutex_init(&bdev->bd_fsfreeze_mutex);
 }
 
-static inline void __bd_forget(struct inode *inode)
-{
-       list_del_init(&inode->i_devices);
-       inode->i_bdev = NULL;
-       inode->i_mapping = &inode->i_data;
-}
-
 static void bdev_evict_inode(struct inode *inode)
 {
        struct block_device *bdev = &BDEV_I(inode)->bdev;
-       struct list_head *p;
        truncate_inode_pages_final(&inode->i_data);
        invalidate_inode_buffers(inode); /* is it needed here? */
        clear_inode(inode);
        spin_lock(&bdev_lock);
-       while ( (p = bdev->bd_inodes.next) != &bdev->bd_inodes ) {
-               __bd_forget(list_entry(p, struct inode, i_devices));
-       }
        list_del_init(&bdev->bd_list);
        spin_unlock(&bdev_lock);
 }
@@ -659,7 +647,7 @@ static struct dentry *bd_mount(struct file_system_type *fs_type,
 {
        struct dentry *dent;
        dent = mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, BDEVFS_MAGIC);
-       if (dent)
+       if (!IS_ERR(dent))
                dent->d_sb->s_iflags |= SB_I_CGROUPWB;
        return dent;
 }
@@ -805,7 +793,6 @@ static struct block_device *bd_acquire(struct inode *inode)
                        bdgrab(bdev);
                        inode->i_bdev = bdev;
                        inode->i_mapping = bdev->bd_inode->i_mapping;
-                       list_add(&inode->i_devices, &bdev->bd_inodes);
                }
                spin_unlock(&bdev_lock);
        }
@@ -821,7 +808,8 @@ void bd_forget(struct inode *inode)
        spin_lock(&bdev_lock);
        if (!sb_is_blkdev_sb(inode->i_sb))
                bdev = inode->i_bdev;
-       __bd_forget(inode);
+       inode->i_bdev = NULL;
+       inode->i_mapping = &inode->i_data;
        spin_unlock(&bdev_lock);
 
        if (bdev)
@@ -1287,11 +1275,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
                bdev->bd_disk = disk;
                bdev->bd_queue = disk->queue;
                bdev->bd_contains = bdev;
-               if (IS_ENABLED(CONFIG_BLK_DEV_DAX) &&
-                   blk_queue_dax(disk->queue))
-                       bdev->bd_inode->i_flags = S_DAX;
-               else
-                       bdev->bd_inode->i_flags = 0;
+               bdev->bd_inode->i_flags = 0;
 
                if (!partno) {
                        ret = -ENXIO;
@@ -1858,7 +1842,7 @@ struct block_device *lookup_bdev(const char *pathname)
        if (!S_ISBLK(inode->i_mode))
                goto fail;
        error = -EACCES;
-       if (path.mnt->mnt_flags & MNT_NODEV)
+       if (!may_open_dev(&path))
                goto fail;
        error = -ENOMEM;
        bdev = bd_acquire(inode);