From 58d1c971b2d42871441e887e3ec4a5a21c83aa95 Mon Sep 17 00:00:00 2001
From: liuh <liuhuan01@xxxxxxxxxx>
Date: Mon, 24 Jun 2024 17:49:08 +0800
Subject: [PATCH] NFS: AIO doesn't require revert iterator
For AIO, nfs_direct_wait return -EIOCBQUEUED would be excepted.
Revert iter is redundant.
Signed-off-by: liuh <liuhuan01@xxxxxxxxxx>
---
fs/nfs/direct.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index bb2f583eb..262769dae 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -471,7 +471,8 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
requested -= result;
iocb->ki_pos += result;
}
- iov_iter_revert(iter, requested);
+ if (is_sync_kiocb(iocb))
+ iov_iter_revert(iter, requested);
} else {
result = requested;
}
@@ -1030,7 +1031,8 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter,
/* XXX: should check the generic_write_sync retval */
generic_write_sync(iocb, result);
}
- iov_iter_revert(iter, requested);
+ if (is_sync_kiocb(iocb))
+ iov_iter_revert(iter, requested);
} else {
result = requested;
}
--
2.27.0
