The patch titled
Subject: swap-make-each-swap-partition-have-one-address_space-fix-fix
has been added to the -mm tree. Its filename is
swap-make-each-swap-partition-have-one-address_space-fix-fix.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: Shaohua Li <shli@xxxxxxxxxx>
Subject: swap-make-each-swap-partition-have-one-address_space-fix-fix
Sasha reported:
Commit "swap: make each swap partition have one address_space" is triggering
a series of warnings on boot:
[ 3.446071] ------------[ cut here ]------------
[ 3.446664] WARNING: at lib/debugobjects.c:261 debug_print_object+0x8e/0xb0()
[ 3.447715] ODEBUG: init active (active state 0) object type: percpu_counter hint: (null)
[ 3.450360] Modules linked in:
[ 3.451593] Pid: 1, comm: swapper/0 Tainted: G W 3.8.0-rc4-next-20130124-sasha-00004-g838a1b4 #266
[ 3.454508] Call Trace:
[ 3.455248] [<ffffffff8110d1bc>] warn_slowpath_common+0x8c/0xc0
[ 3.455248] [<ffffffff8110d291>] warn_slowpath_fmt+0x41/0x50
[ 3.455248] [<ffffffff81a2bb5e>] debug_print_object+0x8e/0xb0
[ 3.455248] [<ffffffff81a2c26b>] __debug_object_init+0x20b/0x290
[ 3.455248] [<ffffffff81a2c305>] debug_object_init+0x15/0x20
[ 3.455248] [<ffffffff81a3fbed>] __percpu_counter_init+0x6d/0xe0
[ 3.455248] [<ffffffff81231bdc>] bdi_init+0x1ac/0x270
[ 3.455248] [<ffffffff8618f20b>] swap_setup+0x3b/0x87
[ 3.455248] [<ffffffff8618f257>] ? swap_setup+0x87/0x87
[ 3.455248] [<ffffffff8618f268>] kswapd_init+0x11/0x7c
[ 3.455248] [<ffffffff810020ca>] do_one_initcall+0x8a/0x180
[ 3.455248] [<ffffffff86168cfd>] do_basic_setup+0x96/0xb4
[ 3.455248] [<ffffffff861685ae>] ? loglevel+0x31/0x31
[ 3.455248] [<ffffffff861885cd>] ? sched_init_smp+0x150/0x157
[ 3.455248] [<ffffffff86168ded>] kernel_init_freeable+0xd2/0x14c
[ 3.455248] [<ffffffff83cade10>] ? rest_init+0x140/0x140
[ 3.455248] [<ffffffff83cade19>] kernel_init+0x9/0xf0
[ 3.455248] [<ffffffff83d5727c>] ret_from_fork+0x7c/0xb0
[ 3.455248] [<ffffffff83cade10>] ? rest_init+0x140/0x140
[ 3.455248] ---[ end trace 0b176d5c0f21bffb ]---
Initialize swap space backing_dev_info once to avoid the warning.
Signed-off-by: Shaohua Li <shli@xxxxxxxxxxxx>
Reported-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/swap.c~swap-make-each-swap-partition-have-one-address_space-fix-fix mm/swap.c
--- a/mm/swap.c~swap-make-each-swap-partition-have-one-address_space-fix-fix
+++ a/mm/swap.c
@@ -858,8 +858,8 @@ void __init swap_setup(void)
#ifdef CONFIG_SWAP
int i;
+ bdi_init(swapper_spaces[0].backing_dev_info);
for (i = 0; i < MAX_SWAPFILES; i++) {
- bdi_init(swapper_spaces[i].backing_dev_info);
spin_lock_init(&swapper_spaces[i].tree_lock);
INIT_LIST_HEAD(&swapper_spaces[i].i_mmap_nonlinear);
}
_
Patches currently in -mm which might be from shli@xxxxxxxxxx are
linux-next.patch
mm-make-madvisemadv_willneed-support-swap-file-prefetch.patch
mm-dont-inline-page_mapping.patch
swap-make-each-swap-partition-have-one-address_space.patch
swap-make-each-swap-partition-have-one-address_space-fix.patch
swap-make-each-swap-partition-have-one-address_space-fix-fix.patch
swap-add-per-partition-lock-for-swapfile.patch
swap-add-per-partition-lock-for-swapfile-fix-fix.patch
swap-add-per-partition-lock-for-swapfile-fix-for-nommu.patch
swap-add-per-partition-lock-for-swapfile-fix-fix-fix.patch
smp-make-smp_call_function_many-use-logic-similar-to-smp_call_function_single.patch
kernel-smpc-cleanups.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
