@@ -477,6 +477,7 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
.pos = iocb->ki_pos,
.len = iov_iter_count(iter),
.flags = IOMAP_DIRECT,
+ .private = iocb->private,
};
loff_t end = iomi.pos + iomi.len - 1, ret = 0;
bool wait_for_completion =
@@ -504,6 +505,8 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
dio->submit.waiter = current;
dio->submit.poll_bio = NULL;
+ WRITE_ONCE(iocb->private, NULL);
+
if (iov_iter_rw(iter) == READ) {
if (iomi.pos >= dio->i_size)
goto out_free_dio;
@@ -188,6 +188,7 @@ struct iomap_iter {
unsigned flags;
struct iomap iomap;
struct iomap srcmap;
+ void *private;
};
int iomap_iter(struct iomap_iter *iter, const struct iomap_ops *ops);
Allow the file system to keep state for all iterations. For now only wire it up for direct I/O as there is an immediate need for it. Signed-off-by: Christoph Hellwig <hch@lst.de> --- fs/iomap/direct-io.c | 3 +++ include/linux/iomap.h | 1 + 2 files changed, 4 insertions(+)