enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/fs/ext4/mballoc.h
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@@ -24,19 +24,15 @@
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 #include "ext4.h"
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 /*
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+ * mb_debug() dynamic printk msgs could be used to debug mballoc code.
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  */
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 #ifdef CONFIG_EXT4_DEBUG
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-extern ushort ext4_mballoc_debug;
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-
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-#define mb_debug(n, fmt, ...)	                                        \
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-do {									\
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-	if ((n) <= ext4_mballoc_debug) {				\
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-		printk(KERN_DEBUG "(%s, %d): %s: " fmt,			\
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-		       __FILE__, __LINE__, __func__, ##__VA_ARGS__);	\
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-	}								\
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-} while (0)
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+#define mb_debug(sb, fmt, ...)						\
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+	pr_debug("[%s/%d] EXT4-fs (%s): (%s, %d): %s: " fmt,		\
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+		current->comm, task_pid_nr(current), sb->s_id,		\
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+	       __FILE__, __LINE__, __func__, ##__VA_ARGS__)
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 #else
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-#define mb_debug(n, fmt, ...)	no_printk(fmt, ##__VA_ARGS__)
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+#define mb_debug(sb, fmt, ...)	no_printk(fmt, ##__VA_ARGS__)
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 #endif
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 #define EXT4_MB_HISTORY_ALLOC		1	/* allocation */
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@@ -77,6 +73,10 @@
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  */
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 #define MB_DEFAULT_GROUP_PREALLOC	512
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+/*
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+ * maximum length of inode prealloc list
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+ */
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+#define MB_DEFAULT_MAX_INODE_PREALLOC	512
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 struct ext4_free_data {
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 	/* this links the free block information from sb_info */