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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-03 00:25:53 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-03 12:31:36 +0900
commitb1e19e5601277845b4f17ecd7c9ba04f73ee11aa (patch)
treebdc23c9fcc4bfe58787b63e9c739c0692b79dc4d
parent1836d95928a0f41ada0cbb2a6c4e46b027db9491 (diff)
nilfs2: fix dirty page accounting leak causing hang at write
Bruno Prémont and Dunphy, Bill noticed me that NILFS will certainly hang on ARM-based targets. I found this was caused by an underflow of dirty pages counter. A b-tree cache routine was marking page dirty without adjusting page account information. This fixes the dirty page accounting leak and resolves the hang on arm-based targets. Reported-by: Bruno Prémont <bonbons@linux-vserver.org> Reported-by: Dunphy, Bill <WDunphy@tandbergdata.com> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Tested-by: Bruno Prémont <bonbons@linux-vserver.org> Cc: stable <stable@kernel.org>
-rw-r--r--fs/nilfs2/btnode.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index 5941958f1e47..435864ce06be 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -276,8 +276,7 @@ void nilfs_btnode_commit_change_key(struct address_space *btnc,
"invalid oldkey %lld (newkey=%lld)",
(unsigned long long)oldkey,
(unsigned long long)newkey);
- if (!test_set_buffer_dirty(obh) && TestSetPageDirty(opage))
- BUG();
+ nilfs_btnode_mark_dirty(obh);
spin_lock_irq(&btnc->tree_lock);
radix_tree_delete(&btnc->page_tree, oldkey);