linux-kernel - Re: [PATCH 4/5] buffer: Fix _

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Date: Mon, 8 Jan 2024 15:58:08 +0100
From: "Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>
To: "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc: Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] buffer: Fix __bread() kernel-doc

On Thu, Jan 04, 2024 at 04:36:51PM +0000, Matthew Wilcox (Oracle) wrote:
> The extra indentation confused the kernel-doc parser, so remove it.
> Fix some other wording while I'm here, and advise the user they need to
> call brelse() on this buffer.
> 
It looks like __bread_gfp has the same problem:

diff --git a/fs/buffer.c b/fs/buffer.c
index 967f34b70aa8..cfdf45cc290a 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1446,16 +1446,18 @@ void __breadahead(struct block_device *bdev, sector_t block, unsigned size)
 EXPORT_SYMBOL(__breadahead);
 
 /**
- *  __bread_gfp() - reads a specified block and returns the bh
- *  @bdev: the block_device to read from
- *  @block: number of block
- *  @size: size (in bytes) to read
- *  @gfp: page allocation flag
+ * __bread_gfp() - Read a block.
+ * @bdev: The block device to read from.
+ * @block: Block number in units of block size.
+ * @size: Block size in bytes.
  *
- *  Reads a specified block, and returns buffer head that contains it.
- *  The page cache can be allocated from non-movable area
- *  not to prevent page migration if you set gfp to zero.
- *  It returns NULL if the block was unreadable.
+ * Read a specified block, and return the buffer head that refers to it.
+ * The memory can be allocated from a non-movable area to not to prevent
+ * page migration if you set gfp to zero. The buffer head has its
+ * refcount elevated and the caller should call brelse() when it has
+ * finished with the buffer.
+ *
+ * Return: NULL if the block was unreadable.
  */
 struct buffer_head *
 __bread_gfp(struct block_device *bdev, sector_t block,
(END)

Another option is to just change this in __bread_gfp() and add a See
__bread_gfp() in __bread()?