linux-kernel - [PATCH] include/linux/pipe_fs_i: Add htmldoc annotation for "head

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Message-ID: <20250305112301.2897-1-kprateek.nayak@amd.com>
Date: Wed, 5 Mar 2025 11:23:01 +0000
From: K Prateek Nayak <kprateek.nayak@....com>
To: Linus Torvalds <torvalds@...ux-foundation.org>, Oleg Nesterov
	<oleg@...hat.com>, Stephen Rothwell <sfr@...b.auug.org.au>,
	<linux-kernel@...r.kernel.org>
CC: Linux Next Mailing List <linux-next@...r.kernel.org>, Swapnil Sapkal
	<swapnil.sapkal@....com>, K Prateek Nayak <kprateek.nayak@....com>
Subject: [PATCH] include/linux/pipe_fs_i: Add htmldoc annotation for "head_tail" member

Add htmldoc annotation for the newly introduced "head_tail" member
describing it to be a union of the pipe_inode_info's @head and @tail
members.

Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Closes: https://lore.kernel.org/lkml/20250305204609.5e64768e@canb.auug.org.au/
Fixes: 3d252160b818 ("fs/pipe: Read pipe->{head,tail} atomically outside pipe->mutex")
Signed-off-by: K Prateek Nayak <kprateek.nayak@....com>
---
 include/linux/pipe_fs_i.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 3cc4f8eab853..44b8c346ae2d 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -65,6 +65,7 @@ union pipe_index {
  *	@wr_wait: writer wait point in case of full pipe
  *	@head: The point of buffer production
  *	@tail: The point of buffer consumption
+ *	@head_tail: unsigned long union of @head and @tail
  *	@note_loss: The next read() should insert a data-lost message
  *	@max_usage: The maximum number of slots that may be used in the ring
  *	@ring_size: total number of buffers (should be a power of 2)

base-commit: 48a5eed9ad584315c30ed35204510536235ce402
-- 
2.34.1