Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev

* git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev: (66 commits)
  [PATCH] kill the rest of struct file propagation in block ioctls
  [PATCH] get rid of struct file use in blkdev_ioctl() BLKBSZSET
  [PATCH] get rid of blkdev_locked_ioctl()
  [PATCH] get rid of blkdev_driver_ioctl()
  [PATCH] sanitize blkdev_get() and friends
  [PATCH] remember mode of reiserfs journal
  [PATCH] propagate mode through swsusp_close()
  [PATCH] propagate mode through open_bdev_excl/close_bdev_excl
  [PATCH] pass fmode_t to blkdev_put()
  [PATCH] kill the unused bsize on the send side of /dev/loop
  [PATCH] trim file propagation in block/compat_ioctl.c
  [PATCH] end of methods switch: remove the old ones
  [PATCH] switch sr
  [PATCH] switch sd
  [PATCH] switch ide-scsi
  [PATCH] switch tape_block
  [PATCH] switch dcssblk
  [PATCH] switch dasd
  [PATCH] switch mtd_blkdevs
  [PATCH] switch mmc
  ...

1 files changed, 49 insertions, 62 deletions

diff --git a/fs/block_dev.c b/fs/block_dev.c
index d06fe3c3dd3f..88a776fa0ef6 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -840,13 +840,12 @@ EXPORT_SYMBOL_GPL(bd_release_from_disk);
  * to be used for internal purposes.  If you ever need it - reconsider
  * your API.
  */
-struct block_device *open_by_devnum(dev_t dev, unsigned mode)
+struct block_device *open_by_devnum(dev_t dev, fmode_t mode)
 {
         struct block_device *bdev = bdget(dev);
         int err = -ENOMEM;
-        int flags = mode & FMODE_WRITE ? O_RDWR : O_RDONLY;
         if (bdev)
-                err = blkdev_get(bdev, mode, flags);
+                err = blkdev_get(bdev, mode);
         return err ? ERR_PTR(err) : bdev;
 }
 
@@ -975,9 +974,7 @@ void bd_set_size(struct block_device *bdev, loff_t size)
 }
 EXPORT_SYMBOL(bd_set_size);
 
-static int __blkdev_get(struct block_device *bdev, mode_t mode, unsigned flags,
-                        int for_part);
-static int __blkdev_put(struct block_device *bdev, int for_part);
+static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part);
 
 /*
  * bd_mutex locking:
@@ -986,7 +983,7 @@ static int __blkdev_put(struct block_device *bdev, int for_part);
  *    mutex_lock_nested(whole->bd_mutex, 1)
  */
 
-static int do_open(struct block_device *bdev, struct file *file, int for_part)
+static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
 {
         struct gendisk *disk;
         struct hd_struct *part = NULL;
@@ -994,9 +991,9 @@ static int do_open(struct block_device *bdev, struct file *file, int for_part)
         int partno;
         int perm = 0;
 
-        if (file->f_mode & FMODE_READ)
+        if (mode & FMODE_READ)
                 perm |= MAY_READ;
-        if (file->f_mode & FMODE_WRITE)
+        if (mode & FMODE_WRITE)
                 perm |= MAY_WRITE;
         /*
          * hooks: /n/, see "layering violations".
@@ -1008,7 +1005,6 @@ static int do_open(struct block_device *bdev, struct file *file, int for_part)
         }
 
         ret = -ENXIO;
-        file->f_mapping = bdev->bd_inode->i_mapping;
 
         lock_kernel();
 
@@ -1027,7 +1023,7 @@ static int do_open(struct block_device *bdev, struct file *file, int for_part)
                 if (!partno) {
                         struct backing_dev_info *bdi;
                         if (disk->fops->open) {
-                                ret = disk->fops->open(bdev->bd_inode, file);
+                                ret = disk->fops->open(bdev, mode);
                                 if (ret)
                                         goto out_clear;
                         }
@@ -1047,7 +1043,7 @@ static int do_open(struct block_device *bdev, struct file *file, int for_part)
                         if (!whole)
                                 goto out_clear;
                         BUG_ON(for_part);
-                        ret = __blkdev_get(whole, file->f_mode, file->f_flags, 1);
+                        ret = __blkdev_get(whole, mode, 1);
                         if (ret)
                                 goto out_clear;
                         bdev->bd_contains = whole;
@@ -1068,7 +1064,7 @@ static int do_open(struct block_device *bdev, struct file *file, int for_part)
                 disk = NULL;
                 if (bdev->bd_contains == bdev) {
                         if (bdev->bd_disk->fops->open) {
-                                ret = bdev->bd_disk->fops->open(bdev->bd_inode, file);
+                                ret = bdev->bd_disk->fops->open(bdev, mode);
                                 if (ret)
                                         goto out_unlock_bdev;
                         }
@@ -1088,7 +1084,7 @@ static int do_open(struct block_device *bdev, struct file *file, int for_part)
         bdev->bd_part = NULL;
         bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
         if (bdev != bdev->bd_contains)
-                __blkdev_put(bdev->bd_contains, 1);
+                __blkdev_put(bdev->bd_contains, mode, 1);
         bdev->bd_contains = NULL;
  out_unlock_bdev:
         mutex_unlock(&bdev->bd_mutex);
@@ -1104,28 +1100,9 @@ static int do_open(struct block_device *bdev, struct file *file, int for_part)
         return ret;
 }
 
-static int __blkdev_get(struct block_device *bdev, mode_t mode, unsigned flags,
-                        int for_part)
+int blkdev_get(struct block_device *bdev, fmode_t mode)
 {
-        /*
-         * This crockload is due to bad choice of ->open() type.
-         * It will go away.
-         * For now, block device ->open() routine must _not_
-         * examine anything in 'inode' argument except ->i_rdev.
-         */
-        struct file fake_file = {};
-        struct dentry fake_dentry = {};
-        fake_file.f_mode = mode;
-        fake_file.f_flags = flags;
-        fake_file.f_path.dentry = &fake_dentry;
-        fake_dentry.d_inode = bdev->bd_inode;
-
-        return do_open(bdev, &fake_file, for_part);
-}
-
-int blkdev_get(struct block_device *bdev, mode_t mode, unsigned flags)
-{
-        return __blkdev_get(bdev, mode, flags, 0);
+        return __blkdev_get(bdev, mode, 0);
 }
 EXPORT_SYMBOL(blkdev_get);
 
@@ -1142,28 +1119,36 @@ static int blkdev_open(struct inode * inode, struct file * filp)
          */
         filp->f_flags |= O_LARGEFILE;
 
+        if (filp->f_flags & O_NDELAY)
+                filp->f_mode |= FMODE_NDELAY;
+        if (filp->f_flags & O_EXCL)
+                filp->f_mode |= FMODE_EXCL;
+        if ((filp->f_flags & O_ACCMODE) == 3)
+                filp->f_mode |= FMODE_WRITE_IOCTL;
+
         bdev = bd_acquire(inode);
         if (bdev == NULL)
                 return -ENOMEM;
 
-        res = do_open(bdev, filp, 0);
+        filp->f_mapping = bdev->bd_inode->i_mapping;
+
+        res = blkdev_get(bdev, filp->f_mode);
         if (res)
                 return res;
 
-        if (!(filp->f_flags & O_EXCL) )
+        if (!(filp->f_mode & FMODE_EXCL))
                 return 0;
 
         if (!(res = bd_claim(bdev, filp)))
                 return 0;
 
-        blkdev_put(bdev);
+        blkdev_put(bdev, filp->f_mode);
         return res;
 }
 
-static int __blkdev_put(struct block_device *bdev, int for_part)
+static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
 {
         int ret = 0;
-        struct inode *bd_inode = bdev->bd_inode;
         struct gendisk *disk = bdev->bd_disk;
         struct block_device *victim = NULL;
 
@@ -1178,7 +1163,7 @@ static int __blkdev_put(struct block_device *bdev, int for_part)
         }
         if (bdev->bd_contains == bdev) {
                 if (disk->fops->release)
-                        ret = disk->fops->release(bd_inode, NULL);
+                        ret = disk->fops->release(disk, mode);
         }
         if (!bdev->bd_openers) {
                 struct module *owner = disk->fops->owner;
@@ -1197,13 +1182,13 @@ static int __blkdev_put(struct block_device *bdev, int for_part)
         mutex_unlock(&bdev->bd_mutex);
         bdput(bdev);
         if (victim)
-                __blkdev_put(victim, 1);
+                __blkdev_put(victim, mode, 1);
         return ret;
 }
 
-int blkdev_put(struct block_device *bdev)
+int blkdev_put(struct block_device *bdev, fmode_t mode)
 {
-        return __blkdev_put(bdev, 0);
+        return __blkdev_put(bdev, mode, 0);
 }
 EXPORT_SYMBOL(blkdev_put);
 
@@ -1212,12 +1197,16 @@ static int blkdev_close(struct inode * inode, struct file * filp)
         struct block_device *bdev = I_BDEV(filp->f_mapping->host);
         if (bdev->bd_holder == filp)
                 bd_release(bdev);
-        return blkdev_put(bdev);
+        return blkdev_put(bdev, filp->f_mode);
 }
 
 static long block_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 {
-        return blkdev_ioctl(file->f_mapping->host, file, cmd, arg);
+        struct block_device *bdev = I_BDEV(file->f_mapping->host);
+        fmode_t mode = file->f_mode;
+        if (file->f_flags & O_NDELAY)
+                mode |= FMODE_NDELAY_NOW;
+        return blkdev_ioctl(bdev, mode, cmd, arg);
 }
 
 static const struct address_space_operations def_blk_aops = {
@@ -1253,7 +1242,7 @@ int ioctl_by_bdev(struct block_device *bdev, unsigned cmd, unsigned long arg)
         int res;
         mm_segment_t old_fs = get_fs();
         set_fs(KERNEL_DS);
-        res = blkdev_ioctl(bdev->bd_inode, NULL, cmd, arg);
+        res = blkdev_ioctl(bdev, 0, cmd, arg);
         set_fs(old_fs);
         return res;
 }
@@ -1303,32 +1292,29 @@ fail:
 EXPORT_SYMBOL(lookup_bdev);
 
 /**
- * open_bdev_excl  -  open a block device by name and set it up for use
+ * open_bdev_exclusive  -  open a block device by name and set it up for use
  *
  * @path:       special file representing the block device
- * @flags:      %MS_RDONLY for opening read-only
+ * @mode:       FMODE_... combination to pass be used
  * @holder:     owner for exclusion
  *
  * Open the blockdevice described by the special file at @path, claim it
  * for the @holder.
  */
-struct block_device *open_bdev_excl(const char *path, int flags, void *holder)
+struct block_device *open_bdev_exclusive(const char *path, fmode_t mode, void *holder)
 {
         struct block_device *bdev;
-        mode_t mode = FMODE_READ;
         int error = 0;
 
         bdev = lookup_bdev(path);
         if (IS_ERR(bdev))
                 return bdev;
 
-        if (!(flags & MS_RDONLY))
-                mode |= FMODE_WRITE;
-        error = blkdev_get(bdev, mode, 0);
+        error = blkdev_get(bdev, mode);
         if (error)
                 return ERR_PTR(error);
         error = -EACCES;
-        if (!(flags & MS_RDONLY) && bdev_read_only(bdev))
+        if ((mode & FMODE_WRITE) && bdev_read_only(bdev))
                 goto blkdev_put;
         error = bd_claim(bdev, holder);
         if (error)
@@ -1337,26 +1323,27 @@ struct block_device *open_bdev_excl(const char *path, int flags, void *holder)
         return bdev;
         
 blkdev_put:
-        blkdev_put(bdev);
+        blkdev_put(bdev, mode);
         return ERR_PTR(error);
 }
 
-EXPORT_SYMBOL(open_bdev_excl);
+EXPORT_SYMBOL(open_bdev_exclusive);
 
 /**
- * close_bdev_excl  -  release a blockdevice openen by open_bdev_excl()
+ * close_bdev_exclusive  -  close a blockdevice opened by open_bdev_exclusive()
  *
  * @bdev:       blockdevice to close
+ * @mode:       mode, must match that used to open.
  *
- * This is the counterpart to open_bdev_excl().
+ * This is the counterpart to open_bdev_exclusive().
  */
-void close_bdev_excl(struct block_device *bdev)
+void close_bdev_exclusive(struct block_device *bdev, fmode_t mode)
 {
         bd_release(bdev);
-        blkdev_put(bdev);
+        blkdev_put(bdev, mode);
 }
 
-EXPORT_SYMBOL(close_bdev_excl);
+EXPORT_SYMBOL(close_bdev_exclusive);
 
 int __invalidate_device(struct block_device *bdev)
 {