linux-kernel - Re: [PATCH v2 5/7] cxl/core: Use guard() to drop goto pattern of cxl_dpa

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Message-ID: <Z7YWqxCNbqw94fYj@aschofie-mobl2.lan>
Date: Wed, 19 Feb 2025 09:36:43 -0800
From: Alison Schofield <alison.schofield@...el.com>
To: Li Ming <ming.li@...omail.com>
Cc: dave@...olabs.net, jonathan.cameron@...wei.com, dave.jiang@...el.com,
	vishal.l.verma@...el.com, ira.weiny@...el.com,
	dan.j.williams@...el.com, linux-cxl@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/7] cxl/core: Use guard() to drop goto pattern of
 cxl_dpa_alloc()

On Mon, Feb 17, 2025 at 10:48:26PM +0800, Li Ming wrote:
> In cxl_dpa_alloc(), some checking and operations need to be protected by
> a rwsem called cxl_dpa_rwsem, so there is a goto pattern in
> cxl_dpa_alloc() to release the rwsem. The goto pattern can be optimized
> by using guard() to hold the rwsem.
> 
> Creating a new function called __cxl_dpa_alloc() to include all checking
> and operations needed to be procted by cxl_dpa_rwsem. Using
> guard(rwsem_write()) to hold cxl_dpa_rwsem at the beginning of the new
> function.
> 
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Signed-off-by: Li Ming <ming.li@...omail.com>

Reviewed-by: Alison Schofield <alison.schofield@...el.com>

snip