The patch titled
Subject: mm: add cond_resched() to generic_swapfile_activate()
has been removed from the -mm tree. Its filename was
mm-add-cond_resched-to-generic_swapfile_activate.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Subject: mm: add cond_resched() to generic_swapfile_activate()
generic_swapfile_activate() can take quite long time, it iterates over all
blocks of a file, so add cond_resched to it. I observed about 1 second
stalls when activating a swapfile that was almost unfragmented - this
patch fixes it.
Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1607221710580.4818@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_io.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN mm/page_io.c~mm-add-cond_resched-to-generic_swapfile_activate mm/page_io.c
--- a/mm/page_io.c~mm-add-cond_resched-to-generic_swapfile_activate
+++ a/mm/page_io.c
@@ -166,6 +166,8 @@ int generic_swapfile_activate(struct swa
unsigned block_in_page;
sector_t first_block;
+ cond_resched();
+
first_block = bmap(inode, probe_block);
if (first_block == 0)
goto bad_bmap;
_
Patches currently in -mm which might be from mpatocka@xxxxxxxxxx are
--
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
