Subject: [merged] mm-bouncec-wix-a-regression-where-ms_snap_stable-stable-pages-snapshotting-was-ignored.patch removed from -mm tree
To: darrick.wong@xxxxxxxxxx,koverstreet@xxxxxxxxxx,mgorman@xxxxxxx,stable@xxxxxxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 17 Oct 2013 11:12:21 -0700
The patch titled
Subject: mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored
has been removed from the -mm tree. Its filename was
mm-bouncec-wix-a-regression-where-ms_snap_stable-stable-pages-snapshotting-was-ignored.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
Subject: mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored
The "force" parameter in __blk_queue_bounce was being ignored, which means
that stable page snapshots are not always happening (on ext3). This of
course leads to DIF disks reporting checksum errors, so fix this
regression.
The regression was introduced in 6bc454d1 ("bounce: Refactor
__blk_queue_bounce to not use bi_io_vec")
Reported-by: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Cc: Kent Overstreet <koverstreet@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [3.10+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/bounce.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN mm/bounce.c~mm-bouncec-wix-a-regression-where-ms_snap_stable-stable-pages-snapshotting-was-ignored mm/bounce.c
--- a/mm/bounce.c~mm-bouncec-wix-a-regression-where-ms_snap_stable-stable-pages-snapshotting-was-ignored
+++ a/mm/bounce.c
@@ -204,6 +204,8 @@ static void __blk_queue_bounce(struct re
struct bio_vec *to, *from;
unsigned i;
+ if (force)
+ goto bounce;
bio_for_each_segment(from, *bio_orig, i)
if (page_to_pfn(from->bv_page) > queue_bounce_pfn(q))
goto bounce;
_
Patches currently in -mm which might be from darrick.wong@xxxxxxxxxx are
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