splice: fix problem with atime not being updated

A bug report on nfsd that states that since it was switched to use
splice instead of sendfile, the atime was no longer being updated
on the input file. do_generic_mapping_read() does this when accessing
the file, make splice do it for the direct splice handler.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/fs/splice.c b/fs/splice.c
index 0a0b79b..1577a73 100644 (file)
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1031,7 +1031,11 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,
                        goto out_release;
        }
 
+done:
        pipe->nrbufs = pipe->curbuf = 0;
+       if (bytes > 0)
+               file_accessed(in);
+
        return bytes;
 
 out_release:
@@ -1047,16 +1051,11 @@ out_release:
                        buf->ops = NULL;
                }
        }
-       pipe->nrbufs = pipe->curbuf = 0;
-
-       /*
-        * If we transferred some data, return the number of bytes:
-        */
-       if (bytes > 0)
-               return bytes;
 
-       return ret;
+       if (!bytes)
+               bytes = ret;
 
+       goto done;
 }
 EXPORT_SYMBOL(splice_direct_to_actor);