The patch titled writeback-enabling-gate-for-light-dirtied-bdi-fix has been added to the -mm tree. Its filename is writeback-enabling-gate-for-light-dirtied-bdi-fix.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: writeback-enabling-gate-for-light-dirtied-bdi-fix From: Wu Fengguang <fengguang.wu@xxxxxxxxx> > + * Provide a global safety margin of ~1%, or up to 32MB for a 20GB box. > + */ > + dirty -= min(dirty / 128, 32768ULL >> (PAGE_SHIFT-10)); /home/wfg/cc/linux-next/mm/page-writeback.c: In function `bdi_dirty_limit': /home/wfg/cc/linux-next/mm/page-writeback.c:464:133: warning: comparison of distinct pointer types lacks a cast Sorry, here is the fixed version. Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Dave Chinner <david@xxxxxxxxxxxxx> Cc: Jan Kara <jack@xxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Mel Gorman <mel@xxxxxxxxx> Cc: Michael Rubin <mrubin@xxxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/page-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN mm/page-writeback.c~writeback-enabling-gate-for-light-dirtied-bdi-fix mm/page-writeback.c --- a/mm/page-writeback.c~writeback-enabling-gate-for-light-dirtied-bdi-fix +++ a/mm/page-writeback.c @@ -447,7 +447,7 @@ unsigned long bdi_dirty_limit(struct bac /* * Provide a global safety margin of ~1%, or up to 32MB for a 20GB box. */ - dirty -= min(dirty / 128, 32768ULL >> (PAGE_SHIFT-10)); + dirty -= min(dirty / 128, 32768UL >> (PAGE_SHIFT-10)); /* * Calculate this BDI's share of the dirty ratio. _ Patches currently in -mm which might be from fengguang.wu@xxxxxxxxx are linux-next.patch writeback-integrated-background-writeback-work.patch writeback-trace-wakeup-event-for-background-writeback.patch writeback-stop-background-kupdate-works-from-livelocking-other-works.patch writeback-stop-background-kupdate-works-from-livelocking-other-works-update.patch writeback-avoid-livelocking-wb_sync_all-writeback.patch writeback-avoid-livelocking-wb_sync_all-writeback-update.patch writeback-check-skipped-pages-on-wb_sync_all.patch writeback-check-skipped-pages-on-wb_sync_all-update.patch writeback-check-skipped-pages-on-wb_sync_all-update-fix.patch writeback-io-less-balance_dirty_pages.patch writeback-consolidate-variable-names-in-balance_dirty_pages.patch writeback-per-task-rate-limit-on-balance_dirty_pages.patch writeback-per-task-rate-limit-on-balance_dirty_pages-fix.patch writeback-prevent-duplicate-balance_dirty_pages_ratelimited-calls.patch writeback-account-per-bdi-accumulated-written-pages.patch writeback-bdi-write-bandwidth-estimation.patch writeback-bdi-write-bandwidth-estimation-fix.patch writeback-show-bdi-write-bandwidth-in-debugfs.patch writeback-quit-throttling-when-bdi-dirty-pages-dropped-low.patch writeback-reduce-per-bdi-dirty-threshold-ramp-up-time.patch writeback-make-reasonable-gap-between-the-dirty-background-thresholds.patch writeback-scale-down-max-throttle-bandwidth-on-concurrent-dirtiers.patch writeback-add-trace-event-for-balance_dirty_pages.patch writeback-make-nr_to_write-a-per-file-limit.patch writeback-make-nr_to_write-a-per-file-limit-fix.patch writeback-enabling-gate-for-light-dirtied-bdi.patch writeback-enabling-gate-for-light-dirtied-bdi-fix.patch writeback-safety-margin-for-bdi-stat-error.patch mm-page-writebackc-fix-__set_page_dirty_no_writeback-return-value.patch mm-find_get_pages_contig-fixlet.patch mm-smaps-export-mlock-information.patch memcg-add-page_cgroup-flags-for-dirty-page-tracking.patch memcg-document-cgroup-dirty-memory-interfaces.patch memcg-document-cgroup-dirty-memory-interfaces-fix.patch memcg-create-extensible-page-stat-update-routines.patch memcg-add-lock-to-synchronize-page-accounting-and-migration.patch memcg-use-zalloc-rather-than-mallocmemset.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