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ext4: switch the guts of ->direct_IO() to iov_iter

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2014-03-04 22:14:00 -05:00
parent 619d30b4b8
commit 16b1f05d7f
3 changed files with 15 additions and 18 deletions
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15
fs/ext4/indirect.c
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@@ -639,8 +639,7 @@ out:
* VFS code falls back into buffered path in that case so we are safe.
*/
ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
const struct iovec *iov, loff_t offset,
unsigned long nr_segs)
struct iov_iter *iter, loff_t offset)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
@@ -648,7 +647,7 @@ ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
handle_t *handle;
ssize_t ret;
int orphan = 0;
size_t count = iov_length(iov, nr_segs);
size_t count = iov_length(iter->iov, iter->nr_segs);
int retries = 0;
if (rw == WRITE) {
@@ -687,18 +686,18 @@ retry:
goto locked;
}
ret = __blockdev_direct_IO(rw, iocb, inode,
inode->i_sb->s_bdev, iov,
offset, nr_segs,
inode->i_sb->s_bdev, iter->iov,
offset, iter->nr_segs,
ext4_get_block, NULL, NULL, 0);
inode_dio_done(inode);
} else {
locked:
ret = blockdev_direct_IO(rw, iocb, inode, iov,
offset, nr_segs, ext4_get_block);
ret = blockdev_direct_IO(rw, iocb, inode, iter->iov,
offset, iter->nr_segs, ext4_get_block);
if (unlikely((rw & WRITE) && ret < 0)) {
loff_t isize = i_size_read(inode);
loff_t end = offset + iov_length(iov, nr_segs);
loff_t end = offset + count;
if (end > isize)
ext4_truncate_failed_write(inode);