disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/include/linux/journal-head.h
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@@ -11,6 +11,8 @@
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 #ifndef JOURNAL_HEAD_H_INCLUDED
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 #define JOURNAL_HEAD_H_INCLUDED
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+#include <linux/spinlock.h>
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+
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 typedef unsigned int		tid_t;		/* Unique transaction ID */
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 typedef struct transaction_s	transaction_t;	/* Compound transaction type */
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@@ -24,13 +26,18 @@
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 	struct buffer_head *b_bh;
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 	/*
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+	 * Protect the buffer head state
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+	 */
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+	spinlock_t b_state_lock;
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+
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+	/*
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 	 * Reference count - see description in journal.c
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 	 * [jbd_lock_bh_journal_head()]
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 	 */
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 	int b_jcount;
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 	/*
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-	 * Journalling list for this buffer [jbd_lock_bh_state()]
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+	 * Journalling list for this buffer [b_state_lock]
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 	 * NOTE: We *cannot* combine this with b_modified into a bitfield
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 	 * as gcc would then (which the C standard allows but which is
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 	 * very unuseful) make 64-bit accesses to the bitfield and clobber
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@@ -41,20 +48,20 @@
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 	/*
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 	 * This flag signals the buffer has been modified by
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 	 * the currently running transaction
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-	 * [jbd_lock_bh_state()]
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+	 * [b_state_lock]
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 	 */
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 	unsigned b_modified;
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 	/*
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 	 * Copy of the buffer data frozen for writing to the log.
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-	 * [jbd_lock_bh_state()]
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+	 * [b_state_lock]
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 	 */
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 	char *b_frozen_data;
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 	/*
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 	 * Pointer to a saved copy of the buffer containing no uncommitted
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 	 * deallocation references, so that allocations can avoid overwriting
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-	 * uncommitted deletes. [jbd_lock_bh_state()]
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+	 * uncommitted deletes. [b_state_lock]
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 	 */
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 	char *b_committed_data;
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@@ -63,7 +70,7 @@
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 	 * metadata: either the running transaction or the committing
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 	 * transaction (if there is one).  Only applies to buffers on a
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 	 * transaction's data or metadata journaling list.
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-	 * [j_list_lock] [jbd_lock_bh_state()]
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+	 * [j_list_lock] [b_state_lock]
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 	 * Either of these locks is enough for reading, both are needed for
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 	 * changes.
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 	 */
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@@ -73,13 +80,13 @@
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 	 * Pointer to the running compound transaction which is currently
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 	 * modifying the buffer's metadata, if there was already a transaction
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 	 * committing it when the new transaction touched it.
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-	 * [t_list_lock] [jbd_lock_bh_state()]
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+	 * [t_list_lock] [b_state_lock]
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 	 */
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 	transaction_t *b_next_transaction;
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 	/*
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 	 * Doubly-linked list of buffers on a transaction's data, metadata or
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-	 * forget queue. [t_list_lock] [jbd_lock_bh_state()]
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+	 * forget queue. [t_list_lock] [b_state_lock]
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 	 */
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 	struct journal_head *b_tnext, *b_tprev;
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