diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 6b74fcf5bb638cb29fe5da4c8009db9fa2759508..39ab8c6b5652edefe8a85559692dac1395c7b8fe 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -131,6 +131,7 @@ struct page_state { unsigned long allocstall; /* direct reclaim calls */ unsigned long pgrotated; /* pages rotated to tail of the LRU */ + unsigned long nr_bounce; /* pages for bounce buffers */ }; extern void get_page_state(struct page_state *ret); diff --git a/mm/highmem.c b/mm/highmem.c index d01276506b004755171f5f545a161cbcae6e12c4..4009115994683b6fe733d56a72589088c7ab6319 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -325,6 +325,7 @@ static void bounce_end_io(struct bio *bio, mempool_t *pool, int err) continue; mempool_free(bvec->bv_page, pool); + dec_page_state(nr_bounce); } bio_endio(bio_orig, bio_orig->bi_size, err); @@ -405,6 +406,7 @@ 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); if (rw == WRITE) { char *vto, *vfrom; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 04a35b3d32620cfc53f7b2a93b5a866d846aac0d..80ce7f2104dfa915f7563c2ae1800dd71f5b4edc 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1897,6 +1897,7 @@ static char *vmstat_text[] = { "allocstall", "pgrotated", + "nr_bounce", }; static void *vmstat_start(struct seq_file *m, loff_t *pos)