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include/linux/pipe_fs_i: Add htmldoc annotation for "head_tail" member

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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@canb.auug.org.au>
Closes: https://lore.kernel.org/lkml/20250305204609.5e64768e@canb.auug.org.au/
Fixes: 3d252160b8 ("fs/pipe: Read pipe->{head,tail} atomically outside pipe->mutex")
Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
K Prateek Nayak
2025-03-05 11:23:01 +00:00
committed by Linus Torvalds
parent c27c66afc4
commit cfced12f51
1 changed files with 1 additions and 0 deletions
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include/linux/pipe_fs_i.h
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@@ -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)