mm: use 'const char *' insted of 'char *' for reason in dump_page()
I tried to use 'dump_page(page, __func__)' for debugging, but it triggers warning: warning: passing argument 2 of `dump_page' discards `const' qualifier from pointer target type [enabled by default] Let's convert 'reason' to 'const char *' in dump_page() and friends: we shouldn't modify it anyway. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -3,8 +3,8 @@
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struct page;
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struct page;
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extern void dump_page(struct page *page, char *reason);
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extern void dump_page(struct page *page, const char *reason);
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extern void dump_page_badflags(struct page *page, char *reason,
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extern void dump_page_badflags(struct page *page, const char *reason,
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unsigned long badflags);
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unsigned long badflags);
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#ifdef CONFIG_DEBUG_VM
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#ifdef CONFIG_DEBUG_VM
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@ -295,7 +295,8 @@ static inline int bad_range(struct zone *zone, struct page *page)
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}
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}
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#endif
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#endif
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static void bad_page(struct page *page, char *reason, unsigned long bad_flags)
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static void bad_page(struct page *page, const char *reason,
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unsigned long bad_flags)
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{
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{
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static unsigned long resume;
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static unsigned long resume;
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static unsigned long nr_shown;
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static unsigned long nr_shown;
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@ -623,7 +624,7 @@ out:
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static inline int free_pages_check(struct page *page)
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static inline int free_pages_check(struct page *page)
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{
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{
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char *bad_reason = NULL;
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const char *bad_reason = NULL;
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unsigned long bad_flags = 0;
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unsigned long bad_flags = 0;
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if (unlikely(page_mapcount(page)))
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if (unlikely(page_mapcount(page)))
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@ -859,7 +860,7 @@ static inline void expand(struct zone *zone, struct page *page,
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*/
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*/
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static inline int check_new_page(struct page *page)
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static inline int check_new_page(struct page *page)
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{
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{
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char *bad_reason = NULL;
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const char *bad_reason = NULL;
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unsigned long bad_flags = 0;
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unsigned long bad_flags = 0;
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if (unlikely(page_mapcount(page)))
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if (unlikely(page_mapcount(page)))
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@ -6545,7 +6546,8 @@ static void dump_page_flags(unsigned long flags)
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printk(")\n");
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printk(")\n");
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}
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}
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void dump_page_badflags(struct page *page, char *reason, unsigned long badflags)
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void dump_page_badflags(struct page *page, const char *reason,
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unsigned long badflags)
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{
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{
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printk(KERN_ALERT
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printk(KERN_ALERT
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"page:%p count:%d mapcount:%d mapping:%p index:%#lx\n",
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"page:%p count:%d mapcount:%d mapping:%p index:%#lx\n",
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@ -6561,7 +6563,7 @@ void dump_page_badflags(struct page *page, char *reason, unsigned long badflags)
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mem_cgroup_print_bad_page(page);
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mem_cgroup_print_bad_page(page);
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}
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}
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void dump_page(struct page *page, char *reason)
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void dump_page(struct page *page, const char *reason)
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{
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{
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dump_page_badflags(page, reason, 0);
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dump_page_badflags(page, reason, 0);
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}
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}
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