switch {__,}blockdev_direct_IO() to iov_iter
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 31ba093..1c67789 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -1107,8 +1107,8 @@
*/
static inline ssize_t
do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
- struct block_device *bdev, const struct iovec *iov, loff_t offset,
- unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
+ struct block_device *bdev, struct iov_iter *iter, loff_t offset,
+ get_block_t get_block, dio_iodone_t end_io,
dio_submit_t submit_io, int flags)
{
int seg;
@@ -1143,9 +1143,9 @@
}
/* Check the memory alignment. Blocks cannot straddle pages */
- for (seg = 0; seg < nr_segs; seg++) {
- addr = (unsigned long)iov[seg].iov_base;
- size = iov[seg].iov_len;
+ for (seg = 0; seg < iter->nr_segs; seg++) {
+ addr = (unsigned long)iter->iov[seg].iov_base;
+ size = iter->iov[seg].iov_len;
end += size;
if (unlikely((addr & blocksize_mask) ||
(size & blocksize_mask))) {
@@ -1256,18 +1256,18 @@
if (unlikely(sdio.blkfactor))
sdio.pages_in_io = 2;
- for (seg = 0; seg < nr_segs; seg++) {
- user_addr = (unsigned long)iov[seg].iov_base;
+ for (seg = 0; seg < iter->nr_segs; seg++) {
+ user_addr = (unsigned long)iter->iov[seg].iov_base;
sdio.pages_in_io +=
- ((user_addr + iov[seg].iov_len + PAGE_SIZE-1) /
+ ((user_addr + iter->iov[seg].iov_len + PAGE_SIZE-1) /
PAGE_SIZE - user_addr / PAGE_SIZE);
}
blk_start_plug(&plug);
- for (seg = 0; seg < nr_segs; seg++) {
- user_addr = (unsigned long)iov[seg].iov_base;
- sdio.size += bytes = iov[seg].iov_len;
+ for (seg = 0; seg < iter->nr_segs; seg++) {
+ user_addr = (unsigned long)iter->iov[seg].iov_base;
+ sdio.size += bytes = iter->iov[seg].iov_len;
/* Index into the first page of the first block */
sdio.first_block_in_page = (user_addr & ~PAGE_MASK) >> blkbits;
@@ -1288,7 +1288,7 @@
retval = do_direct_IO(dio, &sdio, &map_bh);
- dio->result += iov[seg].iov_len -
+ dio->result += iter->iov[seg].iov_len -
((sdio.final_block_in_request - sdio.block_in_file) <<
blkbits);
@@ -1365,8 +1365,8 @@
ssize_t
__blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
- struct block_device *bdev, const struct iovec *iov, loff_t offset,
- unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
+ struct block_device *bdev, struct iov_iter *iter, loff_t offset,
+ get_block_t get_block, dio_iodone_t end_io,
dio_submit_t submit_io, int flags)
{
/*
@@ -1381,9 +1381,8 @@
prefetch(bdev->bd_queue);
prefetch((char *)bdev->bd_queue + SMP_CACHE_BYTES);
- return do_blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
- nr_segs, get_block, end_io,
- submit_io, flags);
+ return do_blockdev_direct_IO(rw, iocb, inode, bdev, iter, offset,
+ get_block, end_io, submit_io, flags);
}
EXPORT_SYMBOL(__blockdev_direct_IO);