X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=fs%2Fblock_dev.c;h=34d9da0e6b74030d6f708f80d35f1971f03e1ca6;hb=9be2ac7ff98fdb3675e74e505b037ba9b4285a6d;hp=1173a4ee0830a41fd39d1546921af239645d9507;hpb=fa1586a7e43760f0e25e72b2e3f97ee18b2be967;p=karo-tx-linux.git

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 1173a4ee0830..34d9da0e6b74 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -165,14 +165,14 @@ blkdev_get_block(struct inode *inode, sector_t iblock,
 }
 
 static ssize_t
-blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
-			loff_t offset, unsigned long nr_segs)
+blkdev_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
+			loff_t offset)
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
 
-	return __blockdev_direct_IO(rw, iocb, inode, I_BDEV(inode), iov, offset,
-				    nr_segs, blkdev_get_block, NULL, NULL, 0);
+	return __blockdev_direct_IO(rw, iocb, inode, I_BDEV(inode), iter,
+				    offset, blkdev_get_block, NULL, NULL, 0);
 }
 
 int __sync_blockdev(struct block_device *bdev, int wait)
@@ -592,7 +592,7 @@ static struct block_device *bd_acquire(struct inode *inode)
 	return bdev;
 }
 
-static inline int sb_is_blkdev_sb(struct super_block *sb)
+int sb_is_blkdev_sb(struct super_block *sb)
 {
 	return sb == blockdev_superblock;
 }
@@ -1508,8 +1508,7 @@ static long block_ioctl(struct file *file, unsigned cmd, unsigned long arg)
  * Does not take i_mutex for the write and thus is not for general purpose
  * use.
  */
-ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
-			 unsigned long nr_segs, loff_t pos)
+ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
 {
 	struct file *file = iocb->ki_filp;
 	struct blk_plug plug;
@@ -1518,7 +1517,7 @@ ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
 	BUG_ON(iocb->ki_pos != pos);
 
 	blk_start_plug(&plug);
-	ret = __generic_file_aio_write(iocb, iov, nr_segs, &iocb->ki_pos);
+	ret = __generic_file_write_iter(iocb, iter, &iocb->ki_pos);
 	if (ret > 0) {
 		ssize_t err;
 
@@ -1529,10 +1528,10 @@ ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
 	blk_finish_plug(&plug);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(blkdev_aio_write);
+EXPORT_SYMBOL_GPL(blkdev_write_iter);
 
-static ssize_t blkdev_aio_read(struct kiocb *iocb, const struct iovec *iov,
-			 unsigned long nr_segs, loff_t pos)
+static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *iter,
+			 loff_t pos)
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *bd_inode = file->f_mapping->host;
@@ -1542,9 +1541,9 @@ static ssize_t blkdev_aio_read(struct kiocb *iocb, const struct iovec *iov,
 		return 0;
 
 	size -= pos;
-	if (size < iocb->ki_left)
-		nr_segs = iov_shorten((struct iovec *)iov, nr_segs, size);
-	return generic_file_aio_read(iocb, iov, nr_segs, pos);
+	if (size < iocb->ki_nbytes)
+		iov_iter_shorten(iter, size);
+	return generic_file_read_iter(iocb, iter, pos);
 }
 
 /*
@@ -1578,8 +1577,8 @@ const struct file_operations def_blk_fops = {
 	.llseek		= block_llseek,
 	.read		= do_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= blkdev_aio_read,
-	.aio_write	= blkdev_aio_write,
+	.read_iter	= blkdev_read_iter,
+	.write_iter	= blkdev_write_iter,
 	.mmap		= generic_file_mmap,
 	.fsync		= blkdev_fsync,
 	.unlocked_ioctl	= block_ioctl,