CIFS: return correct errors when pinning memory failed for direct I/O (54e94ff9) · Commits · 戴 / test

When pinning memory failed, we should return the correct error code and rewind the SMB credits. Reported-by:

Long Li <longli@microsoft.com> Cc: stable@vger.kernel.org Cc: Murphy Zhou <jencce.kernel@gmail.com> Signed-off-by:

fs/cifs/file.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -2632,6 +2632,9 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from,
		result, from->type,
		from->iov_offset, from->count);
		dump_stack();

		rc = result;
		add_credits_and_wake_if(server, credits, 0);
		break;
		}
		cur_len = (size_t)result;
		@@ -3315,13 +3318,16 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file,
		cur_len, &start);
		if (result < 0) {
		cifs_dbg(VFS,
		"couldn't get user pages (cur_len=%zd)"
		"couldn't get user pages (rc=%zd)"
		" iter type %d"
		" iov_offset %zd count %zd\n",
		result, direct_iov.type,
		direct_iov.iov_offset,
		direct_iov.count);
		dump_stack();

		rc = result;
		add_credits_and_wake_if(server, credits, 0);
		break;
		}
		cur_len = (size_t)result;