linux-kernel - Re: [PATCH] staging : lustre : Remove braces from single-line body.

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Date:   Fri, 16 Dec 2016 08:05:53 -0800
From:   Joe Perches <joe@...ches.com>
To:     Tabrez khan <khan.tabrez21@...il.com>, andreas.dilger@...el.com,
        jsimmons@...radead.org
Cc:     gregkh@...uxfoundation.org, lustre-devel@...ts.lustre.org,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging : lustre : Remove braces from single-line body.

On Fri, 2016-12-16 at 19:59 +0530, Tabrez khan wrote:
> Remove unnecessary braces {} for single while statement.

Your patch is fine Tabrez, but to the lustre folk:

> diff --git a/drivers/staging/lustre/lustre/obdclass/cl_io.c b/drivers/staging/lustre/lustre/obdclass/cl_io.c
[]
> @@ -1371,9 +1371,9 @@ int cl_sync_io_wait(const struct lu_env *env, struct cl_sync_io *anchor,
 	LASSERT(atomic_read(&anchor->csi_sync_nr) == 0);
 
 	/* wait until cl_sync_io_note() has done wakeup */
-	while (unlikely(atomic_read(&anchor->csi_barrier) != 0)) {
+	while (unlikely(atomic_read(&anchor->csi_barrier) != 0))
 		cpu_relax();
-	}
+

What if the wakeup never occurs/succeeds?
Should there be a timeout?