The patch titled
synchronous lumpy: improve commentary on writeback wait
has been removed from the -mm tree. Its filename was
wait-for-page-writeback-when-directly-reclaiming-contiguous-areas-fix.patch
This patch was dropped because it was folded into wait-for-page-writeback-when-directly-reclaiming-contiguous-areas.patch
------------------------------------------------------
Subject: synchronous lumpy: improve commentary on writeback wait
From: Andy Whitcroft <apw@xxxxxxxxxxxx>
Improve code commentary on the initial writeback wait in synchronous
reclaim mode.
Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff -puN mm/vmscan.c~wait-for-page-writeback-when-directly-reclaiming-contiguous-areas-fix mm/vmscan.c
--- a/mm/vmscan.c~wait-for-page-writeback-when-directly-reclaiming-contiguous-areas-fix
+++ a/mm/vmscan.c
@@ -479,6 +479,14 @@ static unsigned long shrink_page_list(st
(PageSwapCache(page) && (sc->gfp_mask & __GFP_IO));
if (PageWriteback(page)) {
+ /*
+ * Synchronous reclaim is performed in two passes,
+ * first an asynchronous pass over the list to
+ * start parallel writeback, and a second synchronous
+ * pass to wait for the IO to complete. Wait here
+ * for any page for which writeback has already
+ * started.
+ */
if (sync_writeback == PAGEOUT_IO_SYNC && may_enter_fs)
wait_on_page_writeback(page);
else
_
Patches currently in -mm which might be from apw@xxxxxxxxxxxx are
origin.patch
sparsemem-ensure-we-initialise-the-node-mapping-for-sparsemem_static.patch
ensure-we-count-pages-transitioning-inactive-via-clear_active_flags.patch
wait-for-page-writeback-when-directly-reclaiming-contiguous-areas.patch
wait-for-page-writeback-when-directly-reclaiming-contiguous-areas-fix.patch
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