linux-kernel - Re: [PATCH -mm 1/2] nilfs2: use integer type instead of enum req

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Date: Mon, 6 May 2024 10:26:02 -0700
From: Bart Van Assche <bvanassche@....org>
To: Ryusuke Konishi <konishi.ryusuke@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-nilfs@...r.kernel.org,
 linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCH -mm 1/2] nilfs2: use integer type instead of enum req_op
 for event tracing header

On 5/5/24 12:04 PM, Ryusuke Konishi wrote:
> I also tried typecasting on the declaration header side of event
> tracing, but so far, the sparse warnings don't go away except for the
> patch I first proposed.

How about this patch?

diff --git a/include/trace/events/nilfs2.h b/include/trace/events/nilfs2.h
index 8efc6236f57c..b1a364a33a62 100644
--- a/include/trace/events/nilfs2.h
+++ b/include/trace/events/nilfs2.h
@@ -200,7 +200,11 @@ TRACE_EVENT(nilfs2_mdt_submit_block,
  		    __field(struct inode *, inode)
  		    __field(unsigned long, ino)
  		    __field(unsigned long, blkoff)
-		    __field(enum req_op, mode)
+		    /*
+		     * Use field_struct to avoid is_signed_type() on the bitwise
+		     * type enum req_op.
+		     */
+		    __field_struct(enum req_op, mode)
  	    ),

  	    TP_fast_assign(

Thanks,

Bart.