writeback: move MIN_WRITEBACK_PAGES to fs-writeback.c
Fix compile error fs/fs-writeback.c:515:33: error: ‘PAGE_CACHE_SHIFT’ undeclared (first use in this function) Reported-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
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2 changed files with 6 additions and 5 deletions
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@ -20,6 +20,7 @@
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <linux/fs.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <linux/pagemap.h>
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#include <linux/kthread.h>
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#include <linux/kthread.h>
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#include <linux/freezer.h>
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#include <linux/freezer.h>
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#include <linux/writeback.h>
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#include <linux/writeback.h>
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@ -29,6 +30,11 @@
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#include <linux/tracepoint.h>
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#include <linux/tracepoint.h>
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#include "internal.h"
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#include "internal.h"
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/*
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* 4MB minimal write chunk size
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*/
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#define MIN_WRITEBACK_PAGES (4096UL >> (PAGE_CACHE_SHIFT - 10))
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/*
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/*
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* Passed into wb_writeback(), essentially a subset of writeback_control
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* Passed into wb_writeback(), essentially a subset of writeback_control
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*/
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*/
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@ -25,11 +25,6 @@ DECLARE_PER_CPU(int, dirty_throttle_leaks);
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#define DIRTY_SCOPE 8
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#define DIRTY_SCOPE 8
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#define DIRTY_FULL_SCOPE (DIRTY_SCOPE / 2)
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#define DIRTY_FULL_SCOPE (DIRTY_SCOPE / 2)
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/*
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* 4MB minimal write chunk size
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*/
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#define MIN_WRITEBACK_PAGES (4096UL >> (PAGE_CACHE_SHIFT - 10))
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struct backing_dev_info;
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struct backing_dev_info;
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/*
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/*
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