The patch titled
Subject: mm-annotate-refault-stalls-from-swap_readpage-fix
has been removed from the -mm tree. Its filename was
mm-annotate-refault-stalls-from-swap_readpage-fix.patch
This patch was dropped because it was folded into mm-annotate-refault-stalls-from-swap_readpage.patch
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-annotate-refault-stalls-from-swap_readpage-fix
add comment, per Johannes
Cc: Dan Streetman <ddstreet@xxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Seth Jennings <sjenning@xxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_io.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/mm/page_io.c~mm-annotate-refault-stalls-from-swap_readpage-fix
+++ a/mm/page_io.c
@@ -361,6 +361,11 @@ int swap_readpage(struct page *page, boo
VM_BUG_ON_PAGE(!PageLocked(page), page);
VM_BUG_ON_PAGE(PageUptodate(page), page);
+ /*
+ * Count submission time as memory stall. When the device is congested,
+ * or the submitting cgroup IO-throttled, submission can be a
+ * significant part of overall IO time.
+ */
psi_memstall_enter(&pflags);
if (frontswap_load(page) == 0) {
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-annotate-refault-stalls-from-swap_readpage.patch
