Commit fab6216f authored May 24, 2021 by Xiongwei Song Committed by Peter Zijlstra May 31, 2021

locking/lockdep,doc: Improve readability of the block matrix



The block condition matrix is using 'E' as the writer notation,
however, the writer reminder below the matrix is using 'W', to make
them consistent and make the matrix more readable, we'd better to use
'W' to represent writer.

Suggested-by: Waiman Long <llong@redhat.com>
Suggested-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Xiongwei Song <sxwjean@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lkml.kernel.org/r/1621868745-23311-1-git-send-email-sxwjean@me.com

parent bccf1ec3

Documentation/locking/lockdep-design.rst

+2 −2

Original line number	Diff line number	Diff line
		@@ -453,9 +453,9 @@ There are simply four block conditions:
		Block condition matrix, Y means the row blocks the column, and N means otherwise.

		+---+---+---+---+
		\| \| E \| r \| R \|
		\| \| W \| r \| R \|
		+---+---+---+---+
		\| E \| Y \| Y \| Y \|
		\| W \| Y \| Y \| Y \|
		+---+---+---+---+
		\| r \| Y \| Y \| N \|
		+---+---+---+---+