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[PATCH] zoned vm counters: conversion of nr_dirty to per zone counter

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This makes nr_dirty a per zone counter.  Looping over all processors is
avoided during writeback state determination.

The counter aggregation for nr_dirty had to be undone in the NFS layer since
we summed up the page counts from multiple zones.  Someone more familiar with
NFS should probably review what I have done.

[[email protected]: bugfix]
Signed-off-by: Christoph Lameter <[email protected]>
Cc: Trond Myklebust <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christoph Lameter 2006-06-30 01:55:39 -07:00 • committed by Linus Torvalds
commit b1e7a8fd85
12 changed files with 16 additions and 17 deletions
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2
fs/fs-writeback.c
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@ -464,7 +464,7 @@ void sync_inodes_sb(struct super_block *sb, int wait)
.range_start = 0,
.range_end = LLONG_MAX,
};
unsigned long nr_dirty = read_page_state(nr_dirty);
unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
unsigned long nr_unstable = read_page_state(nr_unstable);
wbc.nr_to_write = nr_dirty + nr_unstable +