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

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Conversion of nr_bounce to a per zone counter

nr_bounce is only used for proc output.  So it could be left as an event
counter.  However, the event counters may not be accurate and nr_bounce is
categorizing types of pages in a zone.  So we really need this to also be a
per zone counter.

[[email protected]: bugfix]
Signed-off-by: Christoph Lameter <[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 01:55:41 -07:00 • committed by Linus Torvalds
commit d2c5e30c9a
6 changed files with 9 additions and 5 deletions
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6
mm/highmem.c
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@ -315,8 +315,8 @@ static void bounce_end_io(struct bio *bio, mempool_t *pool, int err)
if (bvec->bv_page == org_vec->bv_page)
continue;
mempool_free(bvec->bv_page, pool);
dec_page_state(nr_bounce);
dec_zone_page_state(bvec->bv_page, NR_BOUNCE);
mempool_free(bvec->bv_page, pool);
}
bio_endio(bio_orig, bio_orig->bi_size, err);
@ -397,7 +397,7 @@ static void __blk_queue_bounce(request_queue_t *q, struct bio **bio_orig,
to->bv_page = mempool_alloc(pool, q->bounce_gfp);
to->bv_len = from->bv_len;
to->bv_offset = from->bv_offset;
inc_page_state(nr_bounce);
inc_zone_page_state(to->bv_page, NR_BOUNCE);
if (rw == WRITE) {
char *vto, *vfrom;