Subject: + mm-swapfilec-do-not-skip-lowest_bit-in-scan_swap_map-scan-loop.patch added to -mm tree
To: jamieliu@xxxxxxxxxx,akinobu.mita@xxxxxxxxx,hughd@xxxxxxxxxx,minchan@xxxxxxxxxx,shli@xxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 22 Jan 2014 13:22:20 -0800
The patch titled
Subject: mm/swapfile.c: do not skip lowest_bit in scan_swap_map() scan loop
has been added to the -mm tree. Its filename is
mm-swapfilec-do-not-skip-lowest_bit-in-scan_swap_map-scan-loop.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-swapfilec-do-not-skip-lowest_bit-in-scan_swap_map-scan-loop.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-swapfilec-do-not-skip-lowest_bit-in-scan_swap_map-scan-loop.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 ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Jamie Liu <jamieliu@xxxxxxxxxx>
Subject: mm/swapfile.c: do not skip lowest_bit in scan_swap_map() scan loop
In the second half of scan_swap_map()'s scan loop, offset is set to
si->lowest_bit and then incremented before entering the loop for the first
time, causing si->swap_map[si->lowest_bit] to be skipped.
Signed-off-by: Jamie Liu <jamieliu@xxxxxxxxxx>
Cc: Shaohua Li <shli@xxxxxxxxxxxx>
Acked-by: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swapfile.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN mm/swapfile.c~mm-swapfilec-do-not-skip-lowest_bit-in-scan_swap_map-scan-loop mm/swapfile.c
--- a/mm/swapfile.c~mm-swapfilec-do-not-skip-lowest_bit-in-scan_swap_map-scan-loop
+++ a/mm/swapfile.c
@@ -616,7 +616,7 @@ scan:
}
}
offset = si->lowest_bit;
- while (++offset < scan_base) {
+ while (offset < scan_base) {
if (!si->swap_map[offset]) {
spin_lock(&si->lock);
goto checks;
@@ -629,6 +629,7 @@ scan:
cond_resched();
latency_ration = LATENCY_LIMIT;
}
+ offset++;
}
spin_lock(&si->lock);
_
Patches currently in -mm which might be from jamieliu@xxxxxxxxxx are
mm-swapfilec-do-not-skip-lowest_bit-in-scan_swap_map-scan-loop.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
