fuse: no ENOENT from fuse device read

Don't return -ENOENT for a read() on the fuse device when the request was
aborted.  Instead return -ENODEV, meaning the filesystem has been
force-umounted or aborted.

Previously ENOENT meant that the request was interrupted, but now the
'aborted' flag is not set in case of interrupts.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 4 deletions

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index cc6c2908fb12..db534bcde45f 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -747,11 +747,12 @@ static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
         fuse_copy_finish(&cs);
         spin_lock(&fc->lock);
         req->locked = 0;
-        if (!err && req->aborted)
-                err = -ENOENT;
+        if (req->aborted) {
+                request_end(fc, req);
+                return -ENODEV;
+        }
         if (err) {
-                if (!req->aborted)
-                        req->out.h.error = -EIO;
+                req->out.h.error = -EIO;
                 request_end(fc, req);
                 return err;
         }