ceph: switch to ->read_iter()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 5b93cad..c9a24ba 100644 (file)
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -795,8 +795,7 @@ out:
  *
  * Hmm, the sync read case isn't actually async... should it be?
  */
-static ssize_t ceph_aio_read(struct kiocb *iocb, const struct iovec *iov,
-                            unsigned long nr_segs, loff_t pos)
+static ssize_t ceph_read_iter(struct kiocb *iocb, struct iov_iter *to)
 {
        struct file *filp = iocb->ki_filp;
        struct ceph_file_info *fi = filp->private_data;
@@ -806,9 +805,6 @@ static ssize_t ceph_aio_read(struct kiocb *iocb, const struct iovec *iov,
        ssize_t ret;
        int want, got = 0;
        int checkeof = 0, read = 0;
-       struct iov_iter i;
-
-       iov_iter_init(&i, READ, iov, nr_segs, len);
 
 again:
        dout("aio_read %p %llx.%llx %llu~%u trying to get caps on %p\n",
@@ -831,13 +827,13 @@ again:
                     ceph_cap_string(got));
 
                /* hmm, this isn't really async... */
-               ret = ceph_sync_read(iocb, &i, &checkeof);
+               ret = ceph_sync_read(iocb, to, &checkeof);
        } else {
                dout("aio_read %p %llx.%llx %llu~%u got cap refs on %s\n",
-                    inode, ceph_vinop(inode), pos, (unsigned)len,
+                    inode, ceph_vinop(inode), iocb->ki_pos, (unsigned)len,
                     ceph_cap_string(got));
 
-               ret = generic_file_read_iter(iocb, &i);
+               ret = generic_file_read_iter(iocb, to);
        }
        dout("aio_read %p %llx.%llx dropping cap refs on %s = %d\n",
             inode, ceph_vinop(inode), ceph_cap_string(got), (int)ret);
@@ -854,7 +850,7 @@ again:
                             ", reading more\n", iocb->ki_pos,
                             inode->i_size);
 
-                       iov_iter_advance(&i, ret);
+                       iov_iter_advance(to, ret);
                        read += ret;
                        len -= ret;
                        checkeof = 0;
@@ -1257,9 +1253,9 @@ const struct file_operations ceph_file_fops = {
        .open = ceph_open,
        .release = ceph_release,
        .llseek = ceph_llseek,
-       .read = do_sync_read,
+       .read = new_sync_read,
        .write = do_sync_write,
-       .aio_read = ceph_aio_read,
+       .read_iter = ceph_read_iter,
        .aio_write = ceph_aio_write,
        .mmap = ceph_mmap,
        .fsync = ceph_fsync,