The patch titled vmscan: don't export nr_saved_scan in /proc/zoneinfo has been added to the -mm tree. Its filename is vmscan-dont-export-nr_saved_scan-in-proc-zoneinfo.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: vmscan: don't export nr_saved_scan in /proc/zoneinfo From: Wu Fengguang <fengguang.wu@xxxxxxxxx> The lru->nr_saved_scan's are not meaningful counters for even kernel developers. They typically are smaller than 32 and are always 0 for large lists. So remove them from /proc/zoneinfo. Hopefully this interface change won't break too many scripts. /proc/zoneinfo is too unstructured to be script friendly, and I wonder the affected scripts - if there are any - are still bleeding since the not long ago commit "vmscan: split LRU lists into anon & file sets", which also touched the "scanned" line :) If we are to re-export accumulated vmscan counts in the future, they can go to new lines in /proc/zoneinfo instead of the current form, or to /sys/devices/system/node/node0/meminfo? Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx> Acked-by: Rik van Riel <riel@xxxxxxxxxx> Cc: Nick Piggin <npiggin@xxxxxxx> Acked-by: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/vmstat.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff -puN mm/vmstat.c~vmscan-dont-export-nr_saved_scan-in-proc-zoneinfo mm/vmstat.c --- a/mm/vmstat.c~vmscan-dont-export-nr_saved_scan-in-proc-zoneinfo +++ a/mm/vmstat.c @@ -721,7 +721,7 @@ static void zoneinfo_show_print(struct s "\n min %lu" "\n low %lu" "\n high %lu" - "\n scanned %lu (aa: %lu ia: %lu af: %lu if: %lu)" + "\n scanned %lu" "\n spanned %lu" "\n present %lu", zone_page_state(zone, NR_FREE_PAGES), @@ -729,10 +729,6 @@ static void zoneinfo_show_print(struct s zone->pages_low, zone->pages_high, zone->pages_scanned, - zone->lru[LRU_ACTIVE_ANON].nr_saved_scan, - zone->lru[LRU_INACTIVE_ANON].nr_saved_scan, - zone->lru[LRU_ACTIVE_FILE].nr_saved_scan, - zone->lru[LRU_INACTIVE_FILE].nr_saved_scan, zone->spanned_pages, zone->present_pages); _ Patches currently in -mm which might be from fengguang.wu@xxxxxxxxx are origin.patch inotify-use-gfp_nofs-in-kernel_event-to-work-around-a-lockdep-false-positive.patch inotify-use-gfp_nofs-in-kernel_event-to-work-around-a-lockdep-false-positive-fix.patch linux-next.patch readahead-make-mmap_miss-an-unsigned-int.patch readahead-move-max_sane_readahead-calls-into-force_page_cache_readahead.patch readahead-apply-max_sane_readahead-limit-in-ondemand_readahead.patch readahead-remove-one-unnecessary-radix-tree-lookup.patch readahead-increase-interleaved-readahead-size.patch readahead-remove-sync-async-readahead-call-dependency.patch readahead-clean-up-and-simplify-the-code-for-filemap-page-fault-readahead.patch readahead-sequential-mmap-readahead.patch readahead-enforce-full-readahead-size-on-async-mmap-readahead.patch readahead-record-mmap-read-around-states-in-file_ra_state.patch radix-tree-add-radix_tree_prev_hole.patch readahead-move-the-random-read-case-to-bottom.patch readahead-introduce-context-readahead-algorithm.patch readahead-introduce-context-readahead-algorithm-update.patch readahead-remove-redundant-test-in-shrink_readahead_size_eio.patch readahead-enforce-full-sync-mmap-readahead-size.patch pagemap-document-clarifications.patch pagemap-documentation-9-more-exported-page-flags.patch mm-introduce-pagehuge-for-testing-huge-gigantic-pages.patch proc-kpagecount-kpageflags-code-cleanup.patch proc-export-more-page-flags-in-proc-kpageflags.patch vmscan-cleanup-the-scan-batching-code.patch vmscan-dont-export-nr_saved_scan-in-proc-zoneinfo.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html